Page originally created in 2012, and last updated: 23rd November 2024
 

Yellow-Tailed Scorpion, Euscorpius flavicaudis, at Sheerness Docks, July 2024.

Yellow-Tailed Scorpions at Sheerness

Scorpions are the oldest known arachnids on the planet. When one thinks of scorpions its common to associate them with hot countries such as Mexico, which has the highest biodiversity of scorpions anywhere in the world, where there are approximately 200,000 envenomations per year and around 300 human deaths from scorpion stings. - LINK

It often comes as quite a surprise to most people when they learn that we've actually had scorpions living and breeding here in the UK for over 150 years. The small Yellow-Tailed Scorpion, Euscorpius flavicaudis, has managed to establish a thriving colony, in an isolated area in SE England, despite the generally cool and mild climate here in the UK . These scorpions have been found on occasion at several coastal towns across the south of England over the years. The best known and most successful introduced population can still be found on the Isle of Sheppy, in Kent, around the dock-land town of Sheerness. This Yellow-Tailed Scorpion population was estimated in the late 1980's to consist of around 700 specimens. Due to the sedentary nature of these scorpions it has since been agreed by many arachnologists that this initial number was probably grossly underestimated. Many sources now claim that the Yellow-Tailed Scorpion colony at Sheerness could be as large as 10,000 or even 15,000 specimens. I can't find any information on how this 10,000 - 15.000 figure was ever calculated though and after studying and photographing the scorpions at Sheerness myself for the last 15 years I personally believe that the colony, whilst definitely thriving, is probably far smaller than these claimed figures.

This population was the first ever scorpion colony recorded in the UK. Old records are a little sketchy but it's believed that these scorpions first arrived at Sheerness Docks during the 1860's. The Natural History Museum has a preserved Yellow-Tailed Scorpion specimen in its collection, which was collected from within the grounds of the Sheerness Docks in 1870, and was identified at the time by J. J. Walker. This is the earliest confirmed and identified specimen so we known that these scorpions were already established at the docks before 1870. The Yellow Tailed Scorpion has been living in the south-facing walls, rock crevices, abandoned buildings and railway sleepers of these docks for over 150 years now and still thrives there today in 2024. In fact these little arachnid stowaways have been established in Britain for longer than the Grey squirrel, which didn't arrive in the UK until it was imported and deliberately introduced in 1890, during the Victorian era.

Although no one knows for sure it is widely accepted that these small scorpions originally found there way into the UK accidentally as stowaways amid the regular shipments of Italian masonry, that were brought to the docks aboard sailing ships during the reign of Edward VII. Due to the success of this scorpion colony it's likely that it became established as a result of multiple additions from accidental stowaways over the years.

Euscorpius flavicaudis is sometimes referred to by its synonym, Tetratrichobothrius flavicaudis. Other sources refer to this species as Euscorpius (Tetratrichobothrius) flavicaudis . - LINK  It seems there is much confusion whether Euscorpius flavicaudis was transferred from the Euscorpius genus into the Tetratrichobothrius genus, of which it is the only species. However, both names are currently still widely in use and accepted. Both names were assigned by De Geer, in 1778.


22mm gravid female Yellow-Tailed Scorpion at Sheerness Docks, July 2024.

Although the majority of the Sheerness scorpions live within the relative safety of the private docks some specimens can be found on the south-facing wall that surrounds the docks, which is accessible to the public. The Yellow-Tailed Scorpion is native to much of Western and Southern Europe, including France, Italy and Spain as well as Northwest Africa, where it is usually recorded at altitudes below 500m. These tiny scorpions prefer dry and humid habitats, including forests, fields and parks, but are often also found in or around human habitations as well. Like other species of scorpion the Yellow-Tailed Scorpion has two very small eyes situated on the top of the cephalothorax. Additionally scorpions also often have between 2 and 5 pairs of tiny eyes in the front corners of the cephalothorax. Whilst these eyes cannot generate a sharp image they are incredibly sensitive to variations in shades of light. These eyes allow the scorpion to navigate in extremely dark conditions. Scorpions are not entirely reliant on these eyes as their only means of sensing what is occurring around them. The body of the scorpion, especially its legs and claws, is covered in tiny sensory hairs that are able to detect the slightest of air movements or vibrations from its surroundings.


The Old Great Dockyard Wall is a Listed Structure, built around 1823, that measures up to 430cm high and is up to 66cm deep.

The Yellow-Tailed Scorpions are the most northerly species of scorpion in Europe and it is their tolerance to cold temperatures and their ability to adapt to a variety of habitats that has allowed them to become established and thrive in the UK's cooler climate at Sheerness. During the colder months these scorpions remain inactive deep within the dock wall or under rocks and railway sleepers etc. Tim Benton's studies in the late 1980's measured the internal temperature of the Old Dockyard Wall at Sheerness during the winter. It was found that the temperature in the middle of the Great Dockyard Wall would only ever drop to around 3 degrees even during the coldest spells of winter. The Yellow-Tailed Scorpion can survive temperatures at least as low as -7 degrees for relatively short periods of time, so the UK's winters are not a problem for this hardy species at Sheerness.

I have seen it written elsewhere that Euscorpius flavicaudis is the most northerly species of scorpion in the world, but this is incorrect. It is true that the Yellow-Tailed Scorpion is the most northerly scorpion species in Europe, and perhaps the most northerly scorpion outside of the Americas. But the title of "the most northerly scorpion in the world" goes to  Paruroctonus boreus, a medium-sized scorpion from the family Vaejovidae, that's found in both north America and Canada. Paruroctonus boreus is commonly called the Northern Scorpion. - LINK   LINK 2


Yellow-Tailed Scorpion emerging from the depths of Great Dock Wall at 11pm, around two hours after the sun had set. July 2024.

Is Sheerness the only place in the UK where scorpions have been found? 

No, Sheerness is the only place in Britain where the Yellow-Tailed Scorpions have managed to establish a successful, long-term breeding colony. Historically scorpions have popped up at various coastal towns and shipping ports across the UK for hundreds of years. Should a gravid female scorpion arrive in the UK as an accidental stowaway, it could quickly establish a small colony in the area where it was introduced, as has been demonstrated at many coastal towns across the UK. However these other introduced colonies have always died out within a few years of their introduction at every other location where they have been sighted in Britain. It is highly likely that scorpions will continue to turn up at similar locations in the future and maybe one day another viable colony will become established with a sustainable future, but as of yet this hasn't happened anywhere in the UK apart from at Sheerness.

No one knows exactly why the Yellow-Tailed Scorpions have managed to successfully breed and thrive at the Sheerness Docks when all other introduced populations of these scorpions have failed within a few years at other sites across the UK. It could be significant factor that the Isle of Sheppey has a relatively low mean annual rainfall of just 18 inches, compared to that of 24 inches for London and 60 inches for Devon and Cornwall? The average rainfall recorded at coastal sites across the UK is typically twice that of the average rainfall at Sheerness. 

Sheerness Port was originally built in 1665 as a Royal Navy dockyard and fort, and was later rebuilt with the inclusion of the Great Dockyard Wall in 1823. The Great Dockyard Wall, along with the now ruined army barracks and various other old buildings within the docks, are all constructed using the same brickwork, that appears to be particularly favourable to the Yellow-Tailed Scorpions. This is likely to be due to the very soft mortar between the bricks, that allows the scorpions to tunnel into the wall. The huge 66cm depth of the Great Dock Wall allows the scorpions to escape the freezing temperatures of the UK during the cold winter months. Within the grounds of Sheerness Docks are gardens, allotments and areas of rough ground, which favour all manor of insect life, providing an ample and constant supply of insect prey for the Yellow-Tailed Scorpions. In addition, areas of the north face of the Great Dockyard Wall have ivy climbing the wall and overhanging trees which also provide a rich environment for insect prey for the scorpions, which don't need to feed very often.


Sheerness Great Dockyard Wall, Blue Town, Sheerness, Kent, 8th July 2021

Are these Sheerness Scorpions likely to spread?

No, in the 150 years since these scorpions were first recorded at Sheerness Docks these scorpions have not managed to spread and establish themselves as a species anywhere beyond the docks. Very occasionally isolated specimens are found elsewhere in Sheerness, just a short distance away from the docks themselves. From speaking to local residents myself such sightings have occasionally occurred in local garages and the private gardens of local residents. However, these isolated specimens have never been known to breed anywhere other than at Sheerness Docks.

One reason why these scorpions haven't spread beyond the confinement of the docks is the remote location of the Sheerness Docks. With the river on one side of the docks and man-made defence moats and busy roads surrounding the docks they are stranded on an island within an island at Sheerness Docks. Although escapes must occur they don't happen in large enough numbers to establish any viable new colonies of scorpions away from the docks. Scorpion escapees are unlikely to find any similarly favourable conditions away from the docks and are likely to die out quite quickly, just as they have done at every other coastal site in the UK that has seen the arrival of accidentally introduced scorpions.

Most residents, that I have spoken to, in the area of the Sheerness Docks, not only accept the scorpions as part of the local fauna but they are actually proud of their novel arachnid neighbours and the claim to fame that they bring to the town. Local schools have even organised evening trips to visit the Great Dockyard Wall and guide the children as they look for the scorpions at night. Jenny Hurkett, the founder of the Blue Town Heritage Centre at the Criterion Theatre, Sheerness, has two preserved specimens on display for anyone interested in seeing what they look like.


Yellow-Tailed Scorpion glowing under UV light. Found at Sheerness Docks Wall February 2012

Are Yellow-Tailed Scorpions dangerous to humans?

No, the Yellow-Tailed Scorpion is not dangerous to humans or to pets. The Yellow-Tailed Scorpion is a fairly small scorpion species reaching a maximum size of around 20-25mm body-length, and has a total length, including the tail and pincers, of around 35-45mm. These small scorpions have large, powerful pincers for their size, and a short, thin, stinging tail. This tail can usually only deliver a very mild sting to a human. However, the Yellow-Tailed Scorpion is very reluctant to use its sting though, even when hunting these scorpions rely mainly on their powerful pincers to subdue their prey. The effect of the sting to humans is a mere pin-prick to most people and is said to be less painful than the sting of a bee or wasp. The sting usually poses no threat to healthy adult humans at all, although medical advice should be sought if you feel unwell following a sting in case of an allergic reaction. 

In southern Europe, where these scorpions are native, there are recent records though of more severe reactions to the sting of the Yellow-Tailed Scorpion by children. One such incident was in the South of France back in 2019, where a 10 year old boy was stung on his hand whilst handling a Yellow-Tailed Scorpion. His symptoms included localised pain, sweating, nausea, abdominal cramps, decreasing muscular strength and an inability to raise his arm above shoulder level. These symptoms past completely after 72 hours with no long-term effects. It is likely that this extreme reaction is partly due to the child's sensitivity to the venom and the time of year the incident occurred. The venom of the scorpion would have been of a much higher concentration than usual as the sting occurred in winter when the scorpion would have previously been inactive for some time.  LINK 1    LINK 2

I have handled many specimens of these scorpions myself with my bare hands and have usually experienced no signs of aggressive or defensive behaviour from any of them. However this doesn't mean that I would encourage anyone else to ever handle wild scorpions. It is often quoted that the Yellow-Tailed Scorpions at Sheerness do not sting. Some sources even claim that through some genetic mutation this colony has lost its ability to sting. This is not the case though. It is true that even when hunting, or when caught and handled, the Yellow-Tailed Scorpion does not usually use its sting. However, one large male specimen that I encountered on the Great Dock Wall in July 2024 quickly dispelled that myth. I was attempting to carefully prize the scorpion out from the soft mortar of the wall with a very fine, soft paintbrush. The scorpion was unusually defensive though and kept grabbing hold of the paintbrush with its pincers. After several attempts to dislodge the scorpion it finally resorted to using its stinging tail. The scorpion held onto the tip of the paintbrush and stabbed at the brush with its stinger several times. It certainly wasn't my intention to cause the scorpion any distress and at this point I left it alone to disappear back into the wall.

The general rule is if a scorpion has large, robust claws and a thin tail then it's probably not dangerous to humans. Scorpions with slender claws and thick tails are usually from the Buthidae family, which contains most of the dangerous scorpion species. The notable exceptions to this rule are scorpions from the highly venomous Hemiscorpius genus, which contains around 16 species. Hemiscorpius species have deceptively thin tails and fairly large claws. - LINK


Gravid female Yellow-Tailed Scorpion, Euscorpius flavicaudis, at Sheerness Docks, July 2024.

When is the best time to see the Yellow-Tailed Scorpions?

The Yellow-Tailed Scorpions hide themselves away for most of their lives becoming active only to feed and breed, on warm, dry evenings. During the day these nocturnal scorpions can be almost impossible to find as they hide themselves away in the smallest of gaps and cracks in the rocks and bricks where they make their home. However, on very rare occasions some specimens have been seen active during the day, within the grounds of the docks, which is fairly uncommon for scorpions of most species, apart from forest-dwelling scorpions.

For most of us, that don't have access to the private docks, the scorpions are easiest to find once they become active at night, usually 1-3 hours after the sun has set. Under a UV lamp scorpions glow bright turquoise, making them much easier to spot, whether climbing the walls or hiding in rock crevices.

Despite their preference for warm weather these hardy scorpions have been recorded at Sheerness in every month of the year except January. I have personally seen them in small numbers at Sheerness in both November and February, on mild evenings when the night time temperatures only dropped to around 7-9 degrees. At this time of year on winter evenings the scorpions were largely inactive, and were only seen hiding at the outer edge of the cracks in the mortar of the Great Dockyard Wall. The scorpions become most active around 1-2 hours after dark. These scorpions do not like damp conditions and will only emerge on warm, dry evenings. Warm, dry evenings, during the summer months, offer the best chance of seeing these scorpions hiding in the Great Dock Wall, and are the only time you're likely to find any specimens completely out in the open.

On a recent visit to Sheerness Docks in July 2024, when the conditions were ideal for the species, I was able to find around 20 Yellow-Tailed Scorpions on the north face of the Great Dock Wall. The evening temperature was 19 degrees at 10pm, and still 16.5 degrees at 1am. 15 of the sighted scorpions were spotted hiding in the crumbling mortar of the wall. 5 specimens were seen actively roaming the face of the wall. 3 of these 5 roaming specimens were gravid females.


Gravid female Yellow-Tailed Scorpion, Euscorpius flavicaudis, at Sheerness Docks, July 2024.

Are Yellow-Tailed Scorpions a threat to native species?

No, the Yellow-Tailed Scorpions are not invasive and are not a threat to native species. Yellow-Tailed Scorpions feed on any insects or spiders that come within range, with a preference for woodlice. Because of their incredibly slow metabolism it is believed that they may only need to feed as few as 4-5 times a year during the summer months, and can survive for long periods between meals. Whilst largely a nocturnal ambush predator Yellow-Tailed Scorpions will sometimes leave their hiding place and actively search for prey along the Great Dock Wall. There is an abundance of spiders that share the wall with these scorpions. As of 2024 the most numerous spiders being found on the wall are the two non-native species, the Green-Fanged Tube-web Spider, Segestria florentina, and the Noble False Widow, Steatoda nobilis. As well as the preferred woodlice prey of the Yellow-Tailed Scorpions, of which there is a plentiful supply that roam the wall, I have also seen the Yellow-Tailed Scorpions feeding on the occasional beetle or moth too. Such prey is consumed in very small numbers by the scorpions and these invertebrate species are not going to be impacted by the presence of the scorpions.


Yellow-Tailed Scorpion, Euscorpius flavicaudis, at Sheerness Docks, July 2024.

This large adult Yellow-Tailed Scorpion had in its jaws a leg from its last meal. The leg has been identified by beetle experts to be that of a Vine Weevil, probably be the Black Vine Weevil, Otiorhynchus sulcatus.




Yellow-Tailed Scorpion, and the web of the Tube-web Spider, at Sheerness Docks, July 2024.

This adult Yellow-Tailed Scorpion was seen wandering on the north-facing surface of the Great Dock Wall at around 11pm. The scorpion walked across the trip lines of the Tube-web Spider. Immediately the Tube-web Spider ran to the edge of its lair and I thought I was about to witness an epic battle between the scorpion and the spider. Instead of retreating the scorpion immediately reached deep into the funnel of the spider's web with its claw. The Tube-web Spider was the one that quickly retreated back out of sight. The scorpion then tucked itself away in the crumbling mortar between the bricks of the wall, right beside the lair of the Tube-web Spider. The scorpion waited motionless, poised ready to catch itself a meal. Was the scorpion waiting for the spider to come out again so it could grab it with its claws? Maybe the scorpion was waiting in hiding for other invertebrate prey to wander past? Either way the scorpion certainly wasn't threatened by the presence of the Tube-web Spider. Whilst Tube-web Spiders will feed on small juvenile scorpions this spider definitely didn't want to tackle an adult specimen.


Yellow-Tailed Scorpion on the Old Great Dockyard Wall. July 2024.

This gravid female Yellow-Tailed Scorpion was actively searching for prey on the Old Great Dockyard Wall. Using its large pincers, covered in fine sensory hairs, the scorpion reached into every nook and cranny between the bricks of the wall.





Yellow-Tailed Scorpion glowing under UV light. Found at Sheerness Docks Wall February 2012

Why do scorpions glow under UV light?

Under a UV lamp scorpions glow a bright turquoise colour, making them much easier to spot, whether they're climbing the walls or hiding in the rock crevices. It is not understood exactly why scorpions glow under UV light, or how scorpions could benefit from this behaviour, but it is known that the fluorescence is caused by the accumulation of a chemical called beta-carboline within the exoskeleton of the scorpion, which glows under UV light. One theory is that this florescence may help to shield scorpions from the harmful UV rays emitted by the sun by converting UV light into harmless visible light. It is also possible that the emitted glow from UV light could attract moths and other insects that scorpions prey upon. Another theory is the glow could help male scorpions when they are searching for potential female mates. Other scientists believe that the florescence may be purely by chance of evolution and may have no significant purpose at all.

On 2nd September 2024 Phil Haynes shared a series of photos on Facebook of an interesting occurrence at Sheerness. A woodlouse was photographed walking along the surface of the Old Great Dock Wall. Unknown to the woodlouse a Yellow-Tailed Scorpion was hidden away in the cracks between the bricks of the wall, with its pincers protruding, in the scorpion's typical ambush pose. When the woodlouse was directly beneath the scorpion it suddenly altered its direction and made a 90 degree turn. It then proceeded to walk directly into the grasping pincers of the scorpion. Was the woodlouse somehow attracted to the scorpion? Could this be a demonstration of the scorpion's UV fluorescence attracting its prey? - LINK

Scorpions are not the only invertebrates that glow under UV light though. Some species of Opilione, or Harvestmen, are also known to glow under UV light. I have personally tested this claim by shining my UV torch on several harvestmen that I have encountered when I've been out surveying for scorpions at Sheerness. Unfortunately none of the Harvestmen specimens I have tried my UV light on exhibited any degree of glow whatsoever. It is unlikely that any of the British species of Harvestmen possess this unusual trait. Elsewhere in the world species such as Pachylus chilensis, from southern Chile, can exhibit a strong glow comparable to that of a scorpion. - LINK.  The Ecuadorian Harvestmen (Eucynorta sp., Cosmetidae) is another such example of a invertebrate that fluoresces when exposed to UV light.  LINK.   The natural world even extends this amazing behaviour to certain species of reptile too. The Namib Sand Gecko, Pachydactylus rangei, of Namibia and South Africa, has been discovered to display an amazing fluorescence under UV light. - LINK  LINK 2


Yellow-Tailed Scorpion, Euscorpius flavicaudis, on the Great Dockyard Wall at Sheerness Docks 25th August 2022.

The image on the left shows the scorpion under normal diffused flash light. The image on the right shows the same scorpion under UV light.






Yellow-Tailed Scorpion glowing under UV light. Found at Sheerness Great Dockyard Wall February 2012

As scorpions grow they periodically shed their hard exoskeleton, usually in one complete shell. The few hours following a shed of the old exoskeleton are quite a dangerous time for the scorpion until the new soft shell hardens up. The old discarded shell still glows under UV light however the new shell will not glow immediately but the fluorescence slowly returns as the scorpion ages and the beta-carboline begins to build up in the new exoskeleton once again.



Yellow-Tailed Scorpion on the Old Great Dockyard Wall. Photographed using both flash-lighting and UV light. July 2024.







Yellow-Tailed Scorpion on the Old Great Dockyard Wall. Photographed under UV light. July 2024.







Yellow-Tailed Scorpion glowing under UV light. Found at Sheerness Great Dockyard Wall February 2012

Yellow-Tailed Scorpions are not generally a communal species and cannibalism does occur if keeping more than one of these scorpions in the same enclosure, just as it does in the wild. Following mating, which usually occurs in June, July and August, the long gestation period of the female scorpion is between 10 and 14 months, depending on the temperature and the quantity and quality of food available. The female then gives birth to the fertilised eggs when they are ready to hatch. Once laid the eggs hatch immediately and the number of tiny scorplings can range from 4-30 individuals, that are born soft and white. The female carries these tiny scorpions on her back until they are too large to all fit on her back. This can vary from one to eight weeks. Other sources claim that the scorplings only hitch a ride on their mother's back until they have their first moult, which typically occurs when the young scorpions are around 6 days old. Excellent photos of a female Euscorpius sp. carrying her newly hatched scorplings can be seen here: LINK

As with many species of spider it is not unusual for a mature male Yellow-Tailed Scorpion to stand guard over a viable female mate until she is mature and ready to to copulate. At this stage the male will hold onto the tips of the female's pincers and the two scorpions will begin to circle each other in the "dance of the scorpions". The male will then deposit his sperm-sac on the ground and drag the female until she is directly over it. The female will then collect the sperm package through her sexual opening. Due to the long gestation period female Yellow-Tailed Scorpions will only mate once per year, and not every year. Males may mate with several different partners in a single year, but females will always choose the larger and more dominant males to mate with.

Scorpions have a very basic digestive system. All prey is caught using the powerful pincers and then brought to the jaws, where it is effectively chopped into very fine particles and reduced to liquid form that can be sucked up into the mouth of the scorpion. As with snakes the venom of some scorpion species not only stuns or kills its prey but may also aid with the digestion process too. Prey items are usually eaten head first and one meal generally takes several hours to consume.


Yellow-tailed Scorpion, Euscorpius flavicaudis.

So what does the future hold for the Yellow-Tailed Scorpions in Sheerness?

Sheerness Docks is privately owned is is therefore always at risk of being sold, or partially sold for redevelopment. Parts of the docks have already been converted into residential accommodation and there have been additional plans to turn more of the docks over to further development for housing. In 2002 Dr Tim Benton, who had been studying the Yellow-Tailed Scorpions at Sheerness for a decade, expressed his serious concerns over plans to convert some of the dockyard buildings into residential flats.  LINK

In June 2009 a planning application by Dockyard Buildings was successfully fought off following a local petition started by the founder of the Blue Town Heritage Centre, Jenny Hurkett. The proposed application had already been declined once before but revised plans were submitted, which involved converting a historic dockyard building into 26 residential units and building a new development of another 69 residential units, with a car park within Sheerness Docks. Access for the new development proposed knocking a large hole through the historic Great Dockyard Wall, which is currently afforded legal protection as a Listed Structure. Even the RSPCA voiced concerns about the potential risk to the Yellow-Tailed Scorpions should the proposed development get approval. The proposed application was eventually withdrawn to allow the plans to be reworked before being resubmitted again at some point in the future.

LINK

Unfortunately, despite being resident at Sheerness Docks for over 150 years Natural England has confirmed that Euscorpius flavicaudis is classed as a non-native species in Great Britain and is therefore not protected under UK Law from being harmed, killed or removed. These scorpions could swiftly, and perfectly legally, be removed by developers spraying the site with pesticides if they stood in the way of future development or deterred potential buyers from investing in their new riverside flats.

 

Yellow-tailed Scorpion, Euscorpius flavicaudis.

Other Scorpion sightings in the UK

Whenever the subject of "Scorpions in the UK" comes up it's extremely common to hear many anecdotal stories, from various members of the pubic, about wild scorpions being found at a multitude of different sites across the UK. Many of these claimed sightings come from coastal towns, or towns with busy shipping ports, either current or historical. What is not so common though is finding any proof to support these alleged scorpion sightings. In this day and age most people carry mobile phones with high quality phone cameras, and yet finding any photographic evidence to confirm the existence of scorpions from anyone claiming to have seen scorpions at any of these different sites always proves impossible. Whilst it is well known that small colonies of scorpion have historically been present at many coastal towns or shipping ports across the UK, none have survived for any length of time, with the exception of the Sheerness colony.

There are various sources on the internet that report other alleged sightings of these scorpions in the UK, from various sites. These claimed sightings include: Harwich Docks, Pinner, Chatham Docks, Tilbury Docks, Portsmouth Docks and Southampton Docks, Swanage pier in Dorset, as well as Whitemoor and Ongar Underground Station. Even if there is any truth to the historic existence of scorpion colonies, at any of these mentioned sites, none of these scorpion colonies have managed to survive for many years before dying out. The commonly reported scorpions at Ongar Railway Station are discussed further below.

Yellow-Tailed Scorpions were also allegedly sighted in 2012 on Erith Pier, in SE London, by night fishermen. However I have since thoroughly investigated this Erith site in ideal conditions and there were no scorpions present there in 2020. 

In 2015 a number of Yellow-Tailed Scorpions were allegedly collected from a stone wall at the bottom of a residential garden in the coastal town of Seaton, East Devon. As usual there are no photos or other evidence of there being any truth in these claims.

There are also two unconfirmed records of single specimens of Yellow-Tailed Scorpion found in the UK on the NBN Atlas website: 

First: Yellow-Tailed Scorpion found in church grounds of Croydon Minister, in South London. 2nd July 2014. LINK   LINK 2

Second: Yellow-Tailed Scorpion found on a farmland site in Charltons, Saltburn-by-the-sea, Cleveland, North-East England. 8th July 2009. LINK

TikTok post shared in August 2022 featured a slide show of Yellow-Tailed Scorpion images, including some of my own, photographed at Sheerness. The post attracted many comments from members of the public. Within these comments were many claimed sightings of scorpions at various parts of the UK. These included: Exeter, Canvey Island, Hadleigh Castle in Essex, Skegness, Sea Wall in Plymouth Dockyard, Dover Dock Walls. Upon my request he post was removed by TikTok as it had used my scorpion images without my consent.



Accidental Imports

Scorpions do regularly find their way into the UK as accidental imports. These hitch-hikers can sometimes be found in imported building materials, fruit and veg, or hidden in luggage.

On 22nd November 2024 a small, and relatively harmless scorpion, Euscorpius species, was found in a property in the St Helens area, in Merseyside (WA10 3LZ). Not many details were given but the scorpion is believed to have been accidentally brought over here from eastern Europe.  -  LINK

On 21st November 2024 a large scorpion was found in a bunch of pre-packed bananas, at the Birmingham branch of Tescos. The bananas had originated from Colombia, in South America. The sighting was shared on the Insects & Invertebrates of Britain and Europe Facebook group, where it was identified as the Slender Brown Scorpion / Brown Bark Scorpion, Centruroides gracilis. Centruroides gracilis is from the family Buthidae, and has a fairly potent venom. Males of the Slender Brown Scorpion can reach over 15cm in total length. The smaller female can still reach around 10cm. Tesco called in Rentokill to deal with the scorpion, so it was probably destroyed by the pest-control firm.  -  LINK

On 15th September 2024 a post was added to the British Spider Identification group on Facebook requesting the ID of a scorpion that had arrived in the UK as an accidental import. The scorpion arrived in Basingstoke, as an isolated specimen, hidden in a parcel that had been sent from China. Unfortunately when the parcel was opened the scorpion ran out towards an inquisitive cat. The owner of the parcel panicked and struck the scorpion dead to protect their cat. The scorpion was identified in the group as a potentially dangerous species, the Chinese Scorpion, Olivierus martensii, from the family Buthidae. - LINK

On 2nd September 2024 Chris Hamilton, of the Amateur Entomologist's Society, reported on the Facebook group having previous correspondences with a contact at the Bonded Warehouses at Chatham Docks, in Kent. Chris reports that the contact verbally confirmed the presence of small scorpions being established at the docks. Unfortunately access to the docks could not be granted and no photographic evidence was available to support these claims. - LINK. As usual the conversation included many unsubstantiated claims of scorpions being present elsewhere in the UK, including a comment from one person claiming there were "loads around the outskirts of Dover docks and bottom of the cliffs".

On 23rd July 2024 a scorpion was discovered by a group of roofers in a pallet of roof tiles that had travelled from South America before being discovered in Devon. The roofers believed the scorpion to be a highly venomous Brazilian Yellow Scorpion, Tityus serrulatus. The scorpion was rehomed by the Plymouth Reptile and Aquatic, in Cattedown. Plymouth Reptile and Aquatic boss Mark Craddock claimed the scorpion was a "Common European Scorpion" despite arriving in a box from Brazil. The Common European Scorpion, Buthus occitanus, is a species from the highly venomous family Buthidae, but the toxicity levels, and the effects of its venom, vary within this species depending on the geographic location it originated from. Whilst Buthus occitanus does have the colouration of the harmless Euscorpius flavicaudis the overall shape, the width of the tail, and the size of the pincers make it easy to distinguish between the two species, one being potentially dangerous and the other completely harmless.  ITV LINKBBC LINK

On the 12th July 2024 The Mirror reported on an unidentified scorpion species that hitched a ride in the luggage of a couple from Streatham, in London. The scorpion had survived the long journey from Mexico and quickly scurried across the floor as the couple unpacked their suitcases after returning from their holiday. The scorpion was captured and collected by the National Reptile Rescue Centre.  -  LINK

On 25th August 2023 a sighting was shared on Facebook of a small, dark scorpion found in Halifax. From the images provided the scorpion could be identified as being from the Euscorpius or Tetratrichobothrius genus, but couldn't be identified to species level without close examination. It is likely that the scorpion was either Euscorpius flavicaudis / Tetratrichobothrius flavicaudis or Euscorpius italicus.   -  LINK

The post generated the usual responses from folk claiming to have seen scorpions, or heard rumours of scorpions being seen, at various parts of the UK, including Oxfordshire and Bristol Docks. There was one interesting contribution to the conversation from a lady who found a small scorpion living in her fireplace in the New Forest area, near Lymington. The sighting included a photo of a small, dark scorpion with pale brown legs. The specimen lacked the yellow stinger of Euscorpius flavicaudis / Tetratrichobothrius flavicaudis, so was likely to be a different Euscorpius species.  -  LINK

On 5th February 2023 a small scorpion was found in a South London house. The finding was shared on Twitter and an ID was requested. An exact ID couldn't be given from the photo provided but the scorpion could definitely be identified as a species from the family Buthidae. It's unknown how this scorpion came to be in the UK but it was collected by pest controllers and removed.. -  LINK

On 4th July 2022, Sara Coker shared an image on Facebook of a Yellow-Tailed Scorpion that was found wild at an industrial site in Aylesbury, Buckinghamshire. As a wooden pallet was being moved the scorpion fell to the ground. It's unclear whether this is an isolated specimen or if there are further scorpions on the site. No other specimens have been found in the area though. The Facebook post generated a host of typically unsubstantiated claims that scorpion colonies can be found at various sites across the UK, including: Gravesend in Kent, Barry Island in Glamorgan, Scarborough in Yorkshire, the Old Heritage Market in Liverpool, Alton in Staffordshire, Norfolk, New Haven in East Sussex, Dover in Kent, Northampton Golf Course, and Bristol Docks. And yet when I asked each of those Facebook members, who claimed to have seen these scorpions, none were able to provide any photographs to support their stories of scorpions being present at any sites in the UK, other than Sheerness. - LINK

On 30th June 2021, Alan Cooke found a small scorpion in his home in Wimbish near Saffron Walden in Essex. The scorpion looked like a species of Euscorpius but not Euscorpius flavicaudis. It was brown in colour, including the legs and tail, and was larger than the Yellow-Tailed Scorpions of Sheerness. It also lacked the distinctive yellow stinger at the end of its tail, found on Euscorpius flavicaudis. The town of Wimbush is home to the British Army's Carver Barracks and this is a likely source for the scorpion's arrival into the UK. There is also the potential for this scorpion to be an escaped pet. Alan released the scorpion on an old wall near Audley End House. This specimen had a notably swollen abdomen and was likely to be a gravid female. This release could be the start of a new population of scorpions in Essex!  LINK

In 2016 Mizraelle and his colleagues, from the Czech Republic, reportedly found a colony of small scorpions near Brighstone, Newport, on the Isle of Wight. These small scorpions were entirely brown in colour, including the legs, tail and pincers. Mizraelle reports that these scorpions, although similar in size, were notably different in appearance to the Euscorpius flavicaudis, that are established in Sheerness, Kent. Mizraelle describes these scorpions as having smaller and less bulbous pincers than Euscorpius flavicaudis, and a more slender body with sharper edges to their body segments. Unfortunately no photos were sent to me to confirm the record, and I have been unable to find any other recorded sightings of scorpions on the Isle of Wight.

On 2nd May 2014 a scorpion was found at London Victoria Underground Station. The scorpion was captured and taken by the police to London Zoo. Experts at the Natural History Museum identified the scorpion as one of the Bark Scorpions from the highly venomous Centruroides genus. It's believed this potentially dangerous species, from the family Buthidae, may have originated from the Caribbean. - BBC LINK



Yellow-Tailed Scorpion found on the Great Dock Wall, Sheerness, 24th April 2013







Ongar Underground Station scorpions

The scorpion population at Ongar Underground Station was once featured in the BBC's TV program, "Wildlife on One" back in 1979, but this "wild" population of scorpions was later reported by The Independent in 1995 to have been a hoax orchestrated by the station foreman "Fred" who deliberately released five scorpions, bought from a local pet shop in Camden. The scorpions may have bred, or one of the released specimens may have been a gravid female, but some former employees at the Railway Station, and some visitors and local residents, claim the end result was a small population of more than a dozen scorpions that lived in the brickwork of the station for several years, before eventually dying out. 

The Independent Newspaper article Sunday 9th July 1995

"At its peak in 1971, 750 passengers were making the return trip. But even then the track was hardly an economic proposition although the staff did their utmost to drum up business. In 1965, an Ongar station foreman bought five (harmless) European scorpions in a Camden pet shop and let them loose in his goods yard. This formed the basis of one of the few scorpion colonies in Britain, which became an attraction. The staff kept quiet about its real origins, and encouraged speculation that it arrived in a banana van in the 1860s."

Dean Sullivan, a former employee at Ongar Railway Station during the 1960's and 1970's, claimed on the former online forum 'www.districtdavesforum.co.uk' that when David Attenborough arrived with a BBC film crew to record the Ongar Railway scorpion population they were unable to find any "wild" scorpion specimens at the station. This former employee also claims that the film crew brought their own captive-bred scorpions, which they filmed and then claimed were found living wild at the Ongar Railway Station.  See report here.

Wikipedia.org - Ongar Railway Station

"The sand drag at the very end of the rails — intended to help slow trains that overshot the stopping mark — was said to be home to a breed of harmless scorpion and featured in a 1979 episode of the BBC's Wildlife On One. They had been released there by a station foreman who was a keeper of exotic pets."

Alex Hamlyn covered the story of the scorpions at Ongar Underground Station on the website "strangebritain.co.uk".



iPhone 6 recording of the Yellow-Tailed Scorpions at Sheerness Docks, 2020.

This video was filmed at 9pm on 30th September 2020. The air temperature was very mild at 15 degrees and the weather was dry and calm with no wind. Perfect conditions for Yellow-Tailed Scorpions to be found at Sheerness. In 25 minutes I had found 23 specimens ranging from adults, with a body-length of around 25mm (excluding tail and pincers), to young juveniles of just a few mm in length. Several specimens were spotted actively wandering along the south face of the wall that surrounds the docks. However most specimens were found hiding away in cracks and crevices of the wall.





Yellow-Tailed Scorpion photographed on a mirror.

Other Scorpion information.

Despite the dangerous reputation that scorpions have, due to their venomous sting, out of the approximately 2500 species of scorpion found throughout the world it is thought that only about 104 species are considered to be any real threat to healthy adult humans if stung. Scorpions are one of the most resilient creatures on the earth. They are capable of surviving fairly low temperatures and extremely hot temperatures, such as those experienced in dessert environments. During US nuclear testing, both scorpions and cockroaches were found surviving near ground zero showing no adverse effects from the radiation. One species of scorpion, Orobothriurus crassimanus, has been recorded at an altitude of 5550 metres above sea level where oxygen levels are very low and many creatures could not survive. Scorpions are also one of the species of terrestrial life-forms that usually survives flooding. Tests have shown that many species of scorpion can survive being submerged in water for several hours, due to their ability to slow their metabolism down, enabling them to retain sufficient oxygen supplies in their body. Some scorpions can last indefinitely without water and obtain the necessary fluids to survive purely from their occasional prey.

LINK    LINK 2


Yellow-Tailed Scorpion photographed on a mirror.

Scorpions are not insects, but they are classed along with spiders and harvestmen as arachnids. They are very basic creatures and early fossil records show that scorpions have been on the earth for over 400 million years! Early Sea Scorpions, that could have been as long as 2.5 metres, were capable of walking on land as well as living beneath the water, like modern crabs. There is even consideration over whether these ancient scorpions may have been one of the first creatures to leave the sea and begin living a terrestrial existence. - LINK




Yellow-Tailed Scorpion (Euscorpius flavicaudis) found at Sheerness Docks 30th September 2020.

This image of a Yellow-Tailed Scorpion, with a body-length of 20mm, not only shows how small these scorpions are but also demonstrates how placid they are if treated with respect.







Yellow-Tailed Scorpion (Euscorpius flavicaudis) found at Sheerness Docks 30th September 2020.








Yellow-Tailed Scorpion (Euscorpius flavicaudis) found at Sheerness Docks 30th September 2020.








Yellow-Tailed Scorpion (Euscorpius flavicaudis) found at Sheerness Docks 30th September 2020.








Yellow-Tailed Scorpion (Euscorpius flavicaudis) found at Sheerness Docks 30th September 2020.









Yellow-Tailed Scorpion (Euscorpius flavicaudis) found at Sheerness Docks 30th September 2020.








Yellow-Tailed Scorpion (Euscorpius flavicaudis) found at Sheerness Docks 30th September 2020.








Yellow-Tailed Scorpion (Euscorpius flavicaudis) found at Sheerness Docks 30th September 2020.








Yellow-Tailed Scorpion (Euscorpius flavicaudis) found at Sheerness Docks 30th September 2020.








Yellow-Tailed Scorpion (Euscorpius flavicaudis), with a body-length of 20mm, on the Sheerness Great Dockyard Wall, 25th November 2020.

Image taken with the Venus Laowa 15mm f/4 Wide Angle 1:1 Macro lens. Hand-held using manual exposure, manual focus and manual flash settings.
3.2 second exposure, f/32 aperture, ISO 1600. Diffused flash.






Yellow-Tailed Scorpion (Euscorpius flavicaudis) hiding in the Great Dockyard Wall at Sheerness Docks 25th November 2020.

The scorpion pictured above was one of twelve Yellow-Tailed Scorpions I saw hiding in the wall at Sheerness Docks on a mild, drizzly night at around 7pm on 25th November when the air temperature was around 8-9 degrees. As the drizzle arrived and the temperature began to drop further the scorpions all began to disappear out of sight deeper into the wall. The Yellow-Tailed Scorpion in this image shows its exoskeleton is starting to split open along the side as the scorpion begins to shed its skin. The scorpion will be highly vulnerable with its soft new skin exposed so it will need to stay hidden away until the new skin hardens and forms the new exoskeleton. The new skin has yet to build up the chemical, beta-carboline, so is not yet fluorescent under UV light. 




Yellow-Tailed Scorpion (Euscorpius flavicaudis) hiding in the Great Dockyard Wall at Sheerness Docks 25th November 2020.

Yellow-Tailed Scorpions take 1-3 years to reach maturity and adult specimens can live for around two years, giving the scorpion a lifespan of around 3-5 years. With much of the adult female's life spent during the 10-14 month gestation period, when they are carrying the developing young inside them. Adult specimens live a very sedentary life and remain largely inactive for most of the time and rarely leave their hiding place. It was reported by Professor Tim Guy Benton, who studied the Yellow-Tailed Scorpions at Sheerness extensively between 1987 - 1989, that female Yellow-Tailed Scorpions may leave their hiding place as few as ten times during their entire life time. Professor Tim Benton studied this scorpion population for 18 months and marked and tracked 162 individual specimens at Sheerness in the course of his studies. 



Yellow-Tailed Scorpion (Euscorpius flavicaudis) found on the Great Dockyard Wall at Sheerness Docks 27th April 2013

Male Yellow-Tailed Scorpions are usually more active than females and can on occasion be seen hunting for food, or for a mate, out in the open on warm, dry evenings. Females can also be found out in the open, actively hunting for prey on occasion too. The activity of Yellow-Tailed Scorpions is not only affected by the air temperature, time of year, wind and rainfall, but also the lunar cycle. Many species of Scorpions are known to be less active when there is a full moon. Yellow-Tailed Scorpions spend most of their lives living in the same spot, which at Sheerness Docks is usually the same crack in the Great Dockyard Wall. When these scorpions do come out to forage for food they generally don't move much further than a few metres from their hideaway. 




Yellow-Tailed Scorpion (Euscorpius flavicaudis) hiding in the Great Dockyard Wall at Sheerness Docks 25th November 2020.

In many cases the protruding pincers of the scorpion is all that is seen as it hides itself away in the cracks within the mortar on the Sheerness Great Dockyard Wall. These pincers are modified pedipalps that are used to capture and restrain prey. The pedipalps are covered in tiny hairs called trichobothria. These super-sensitive hairs can detect the slightest vibration or movement not only through the ground but also through the air. With the pincers perched at the edge of the crack in the Great Dockyard Wall the scorpion can accurately detect the approach of prey species or the approach of a larger predator.



Yellow-Tailed Scorpion (Euscorpius flavicaudis) wandering on the Great Dockyard Wall at Sheerness Docks 25th August 2022.

My survey of the Great Dockyard Wall on 25th August 2022 revealed the first scorpions starting to emerge from within the wall at around 9pm. By 10:30pm I had seen two adult specimens briefly wandering on the face of the wall before disappearing back into cracks. 4 adult specimens, and one juvenile specimen were also observed hiding in cracks in the walls. These scorpions were seen until around midnight before they retreated slightly deeper into the wall. One tiny juvenile specimen was observed emerging and waiting at the edge of the wall at around midnight.



Yellow-Tailed Scorpion (Euscorpius flavicaudis) wandering on the Great Dockyard Wall at Sheerness Docks 25th August 2022.







Yellow-Tailed Scorpion (Euscorpius flavicaudis) wandering on the Great Dockyard Wall at Sheerness Docks 25th August 2022.







Yellow-Tailed Scorpion (Euscorpius flavicaudis) wandering on the Great Dockyard Wall at Sheerness Docks 25th August 2022.







4mm juvenile Yellow-Tailed Scorpion waiting to ambush its prey amidst the crumbling mortar on the Great Dockyard Wall at Sheerness Docks 25th August 2022.

By midnight most of the scorpions had retreated back into the wall. Just the tips of the claws of a few remaining scorpions could still be seen hiding in cracks and crevices amidst the crumbling mortar of the Great Dockyard Wall. This tiny 4mm specimen was still waiting at the edge of its retreat though, hoping to capture any passing small invertebrates that wandered by.




4mm juvenile Yellow-Tailed Scorpion amidst the crumbling mortar on the Great Dockyard Wall at Sheerness Docks 25th August 2022.







Gravid female Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023

On the 17th June I surveyed the Sheerness site for Yellow-Tailed Scorpions. The conditions were perfect with an air temperature of 18 degrees, no wind, and complete cloud cover. I arrived at 10pm and within 2 minutes I had spotted 2 small juvenile specimens hiding in gaps in the crumbling mortar of the Great Dock Wall. By midnight I had counted 19 scorpions. 5 of which were adults and 14 were juveniles. 3 adults and 2 juveniles were found wandering on the south-facing side of the wall, whilst the other 14 specimens were seen waiting, at the edge of gaps and cracks in the mortar, to ambush any wandering prey. Throughout the evening the only prey seen wandering on the wall were woodlice, which regularly become meals to the scorpions.


Gravid female Yellow-Tailed Scorpion under UV light. Found out wandering on the Great Dock Wall, 17th June 2023







Gravid female Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023

This gravid female specimen was found wandering on the south-facing side of the wall at around midnight. It had a body-length of 22mm, excluding the pincers and tail.





Gravid female Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023







Gravid female Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023







Gravid female Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023







Gravid female Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023







 Gravid female Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023








Gravid female Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023







Gravid female Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023







12mm juvenile Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023







12mm juvenile Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023







12mm juvenile Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023







12mm juvenile Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall, 17th June 2023







12mm juvenile Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall at 10:20pm, 17th June 2023







9mm juvenile Yellow-Tailed Scorpion. Found out wandering on the Great Dock Wall at 10pm, 17th June 2023

This 9mm juvenile specimen had recently moulted and its semi-translucent new exoskeleton exhibited very little fluorescence under my UV torchlight.





Yellow-Tailed Scorpion at Sheerness Docks, 27th April 2013.







Yellow-Tailed Scorpion at Sheerness Docks, 26th February 2012.

This adult Yellow-Tailed Scorpion was found in the crumbling mortar of the Great Dock Wall at Sheerness on a mild night in February, when the evening temperature was around 7 degrees. The scorpion was gently prized out of its hiding place for a quick photo before being allowed to scuttle back into the wall. This was the first Yellow-Tailed Scorpion I ever found at Sheerness and was responsible for my fascination with this species in the UK.







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Other Invertebrates on The Great Dockyard Wall



9mm Southern Pill Woodlouse, Armadillidium depressum, wandering the Great Dockyard Wall late at night, 25th August 2022.

Woodlice are the main prey of the Yellow-Tailed Scorpions at Sheerness. These terrestrial crustaceans can be seen at night as they wander around the Great Dockyard Wall, where they have to avoid the many spiders and scorpions that lay in wait to ambush such invertebrates. Southern Pill Woodlouse, Armadillidium depressum, is generally found in the south and south-west of England, and is considered to be uncommon in Kent county.  LINK





Tube-Web Spider (Segestria florentina) hiding in the Great Dockyard Wall at Sheerness Docks 25th November 2020.

The Yellow-Tailed Scorpions are not the only ambush predators that hide away within the crumbling mortar of the Great Dockyard Wall at Sheerness. There is also an abundance of Tube-Web Spiders (Segestria florentina), with their menacing green chelicerae, that lie in wait for passing prey. The Tube-Web Spider is another non-native species of Mediterranean origin that has become naturalised in the UK since 1816, more than 200 years ago.

Dead specimens of Yellow-Tailed Scorpions have been found in the webs of Tube-Web Spiders and likewise, Yellow-Tailed Scorpions have been seen feeding on adult Tube-Web Spiders. Even when hiding in its retreat this species can be readily identified by the metallic green chelicerae that are not found on either of the other two Segestria species found in the UK. The Lace-Web Spider, Amaurobius similis, which also occupies the Great Dockyard Wall, is another species of spider that has been seen on occasion feeding on the Yellow-Tailed Scorpions at Sheerness.


Tube-Web Spider web (Segestria florentina) on the Great Dockyard Wall at Sheerness Docks 25th August 2022.

One of the many distinctive webs of the Tube-Web Spider web, Segestria florentina, with their radiating signal lines that stretch out across the Great Dockyard Wall at Sheerness Docks.






5mm juvenile Steatoda nobilis, in its tangle-web on the Great Dockyard Wall, 25th August 2022.

During my scorpion survey on 25th August 2022 I recorded the Noble False Widow Spider, Steatoda nobilis, for the first time living on the Great Dockyard Wall. On this occasion I only managed to find two juvenile specimens. Steatoda nobilis are a highly adaptable species though, and are very capable of colonising new areas with incredible success. It'll be interesting to watch how the arrival of this non-native spider to the Great Dockyard Wall will affect the Euscorpius flavicaudis, and the Segestria florentina that currently dominate this habitat. It's quite possible, but very unlikely that these two long established predatory species will devour the young Steatoda nobilis before it's able to establish itself on the Dockyard Wall. With just a couple of juvenile Steatoda nobilis currently present in 2022 they may or may not get the chance to establish themselves there.  However, after seeing how this species has managed to out-compete so many other spider species in my own garden, to rapidly become the most dominant spider there, I would expect the same to happen at Sheerness Docks too eventually. It's only a matter of time in my opinion. Hopefully this won't be too detrimental to the long-term survival of the Yellow-Tailed Scorpions at Sheerness.
My survey on 19th June 2023 found only three juvenile Steatoda nobilis on the Great Dock Wall. It could be that the surface of the wall is too flat to be suited to adult Steatoda nobilis. This would be good news for the Euscorpius flavicaudis.


4mm juvenile Zygiella sp. in its orb-web on the Great Dockyard Wall, 25th August 2022.

Another species that was present on the Great Dockyard Wall during my survey, 25th August 2022, was the Missing-Sector Orb-Weaver. I found two juvenile specimens on the wall. The Missing-Sector Orb-Weaver is another hardy and adaptable species.






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In September 2020 I was contacted by Sergio Henriques and Olga Sivell, from the Natural History Museum in London, and asked if I would be able to collect specimens of Yellow-Tailed Scorpion from Sheerness Docks for inclusion in the Darwin Tree Of Life Project, a project that aims to fully sequence the genomes of all 70.000 species of eukaryotic organisms in Britain and Ireland. Permission was sought and granted from Swale Council, Kent County Council, Sheerness Docks, Peel Ports and Edward Harris Law, on behalf of Spitalfields Trust, to collect the samples and two specimens were collected and submitted for inclusion in this project.


The Darwin Tree of Life Project uses genomic data to understand the evolution of the diversity of life, to explore the biology of organisms and ecosystems, to aid conservation efforts and to provide new tools for medicine and biotechnology. The Darwin Tree of Life Project is one of several initiatives across the globe working towards the ultimate goal of sequencing all complex life on Earth, in a venture known as the Earth BioGenome Project.    







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My Yellow-Tailed Scorpion Photography In The Media



During the summer of 2022 I was asked by researchers for the BBC's The One Show to help them find and film Yellow-Tailed Scorpions at Sheerness, in Kent, and to feature on the film myself. I met with Lizzy Daly Wild, and the film crew, at Sheerness, on 25th August 2022. It was a mild dry night and it didn't take me long to find both adult and juvenile scorpions to feature on the film.

The final film was aired on BBC 1, on 12th October 2022, at 7pm, on The One Show. The film can be watched here:  "Scorpions at Sheerness" on The One Show 

The footage was shown once again in 2024 on the BBC 1 program "Morning Live", Series 5 at 9;30am on the 10th January. Watch from 105:43 - Morning Live





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In March 2024 I was contacted by the successful "YouTuber" Rob Dymott, who produces a series of short wildlife videos under the name of "Leave Curious". Rob was particularly keen on putting together a short film on the Yellow-Tailed Scorpions at Sheerness with my help. Whilst I have received many similar requests in the past it was Rob's respectful approach and enthusiasm for the species that prompted me to support him with this work. Rob and I met up at Sheerness Docks in July 2024. The conditions that night were perfect for scorpion hunting and it didn't take long for us to capture all the necessary footage Rob needed for his film. The end result was a factually accurate and thoroughly enjoyable video on these amazing arachnids.

Watch Rob's YouTube video here






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Kent Online article on the Scorpions at Sheerness, 5th July 2021

On 5th July 2021 the KM News Group ran a story on the Yellow-Tailed Scorpions at Sheerness Docks. The story mentioned my photography of these scorpions and my website, and was accompanied by several of my photos.  Kent Online published the article 5/07/21 and the Sheerness Times Guardian printed the story in their newspaper 7/07/21.

There are others, like Kent postman Jason Steel who has won awards for his nature photography. The pictures of Sheppey scorpions on his website www.jason-steel.co.uk are stunning. But he uses macro lenses and stuff. I tried using a flash on one of mine but I think that just frazzled the poor thing. For those thinking of trying to 'pap' a scorpion, Jason offered these tips: "To get sharp images you are going to need your camera mounted on a tripod and you'll have to wait for the scorpion to stand still for a few seconds, which is something they don't often do when they out in the open and exposed to predators. "Wildlife photography takes a great deal of patience and dedication. You can use an off-camera flash to take more natural-looking images but you are still going to need a torch focussed on the scorpion so the camera can focus properly in such dark conditions. "Having a friend to hold the flash and torch for you while you concentrate on taking the photos makes things much easier."



Sheerness Times Guardian newspaper, 7th July 2021




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On 30th April 2022 the BBC's "Discover Wildlife" used my scorpion images to accompany an article entitled "Wildlife Surprises on the Islands of England and Wales".

See article here:  LINK







BBC article, November 2024

On the 17th November 2024 the BBC ran a story with the headline "Dockyard searching for chief scorpion wrangler!". Jenny Hurkett, who runs the Blue Town Heritage Centre, on the Isle of Sheppy, had called for applicants to officially monitor the Yellow-Tailed Scorpions on the Great Dockyard Wall at Sheerness. The BBC's article was accompanied by one of my scorpion photos. -  LINK

The Daily Mirror then contacted me on 20th November looking to also buy my scorpion image to accompany their version of the story.  -  LINK







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Pseudoscorpions / False Scorpions / Chelonethida


Although we don't have any native scorpions in the UK we do have up to 29 different species of tiny pseudoscorpion, 12 of which are considered to be common. Pseudoscorpions are very small arachnids that like scorpions have 8 legs and two modified pedipalps with pincers at the end. Unlike scorpions the pseudoscorpion has no tail or stinger though. Many pseudoscorpion species do possess poison glands in their pedipalps, and like spiders and true scorpions they inject venom to subdue their prey. Once caught and subdued the prey is then covered in digestive enzymes and chopped into little pieces by the pseudoscorpion's chelicera, before being sucked up and consumed like a soup. Most pseudoscorpions have either two or four eyes, situated on the front marginal edges of their cephalothorax. Unlike a scorpion pseudoscorpions do not have their eyes mounted on a turret on the top-centre of their cephalothorax. The eyes are fairly basic and are only sensitive to light levels. Some pseudoscorpions have no eyes and rely entirely on their sensory hairs to navigate.

Most pseudoscorpion specimens in the UK are smaller than 4mm in body-length. In Britain the largest pseudoscorpion is the Large Tree Chernes, Dendrochernes cyrneus, which has a body-length of slightly over 4 mm. The smallest of our pseudoscorpions is the Book Scorpion, Cheiridium museorum, which is only 1.3 mm in length. In the UK the Pseudoscorpions are the fifth most numerous order of arachnids, coming behind spiders, mites, ticks and harvestmen.

Many species, such as the Ephippiochthonius tetrachelatus pictured above, can be found in residential gardens. Some species are more commonly encountered in grassland, woodland or coastal habitats. Due to their tiny size many species need to be viewed under high magnification of 20x or more to spot the distinguishing features needed for identification. Pseudoscorpions usually live for 2-3 years.

Being so small pseudoscorpions are unable to travel great distances on their own and rely on a little help to disperse. It has been shown that pseudoscorpions that live in temporary habitats, like compost heaps and bird's nests, catch a lift from an involuntary host to move around. Using their pincers the pseudoscorpion attaches itself to flies, bees, parasitic wasps, beetles and harvestmen to carry them to more favourable pastures. This process is known as phoresy, and comes from the Greek word for "being carried". Some pseudoscorpions will attach themselves to bees and be carried into the bees nest, where they will feed on mites.

Some pseudoscorpions have stout, muscular pedipalps and pincers, which they typically use to catch slow-moving, hard bodied prey, such as woodlice. Other pseudoscorpions have long, slender pedipalps and pincers, and these species tend to prey on soft-bodied prey, such as springtails, insect larvae and worms.

When threatened it is common for pseudoscorpions to run backwards, guided by the large sensory hairs on their abdomen. Like spiders some pseudoscorpions can produce silk, which they use to build a chamber, often beneath tree bark, which is used for moulting, hibernating or to keep their young safe from predators. Unlike spiders pseudoscorpions do not possess spinnerets at the rear of their abdomen. Instead the silk comes from an organ called the galea, a tiny tube at the tip of the moveable finger on their chelicera.

Like scorpions mating involves the male depositing a sperm packet, wrapped in silk and placed on a long stalk, known as a spermatophore. This is then left, fixed to the ground, for the female to collect with her genitalia. With some species of pseudoscorpion the sperm is immediately used to fertilise her eggs. Other species will store the sperm and use it to fertilise the eggs once a suitable habitat has been found to establish a new colony. Throughout the world there are more than 3,300 species of pseudoscorpion, across more than 430 genera, with more species being discovered regularly.

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1.5mm Dimple-clawed Chthonid (Chthonius (Ephippiochthonius) tetrachelatus), found under a flowerpot in my SE London garden

Dimple-clawed Chthonid  -  (Chthonius (Ephippiochthonius) tetrachelatus)

The Dimple-clawed Chthonid is a small to medium sized pseudoscorpion species, typically growing to around 1.3 - 1.9mm in body-length. This species is widespread in the UK and can typically be found in leaf litter, under stones or rocks, and in garden waste and plant debris. Compost heaps, tree hollows, and behind tree bark can also provide good habitat for the Dimple-clawed Chthonid. It can also be associated with synanthropic habitats including greenhouses, well established gardens, quarries and waste-ground. As its name suggests the Dimple-clawed Chthonid can be identified by a tiny little dip on the top of its claw. The Dimple-clawed Chthonid has four eyes, positioned in two pairs, with each of the two eyes about one eye diameter apart.

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1.5mm Dimple-clawed Chthonid (Chthonius (Ephippiochthonius) tetrachelatus), found under a flowerpot in my SE London garden







A close-up of the distinctive dip in the claw of the Dimple-clawed Chthonid (Chthonius (Ephippiochthonius) tetrachelatus)
























All Photographs on this page were taken using the Canon 40D, Canon 7D, Canon 7D mkii and Canon 5D mkiii cameras and the Canon 100mm 2.8IS, Canon 70-300mm IS L, Canon 17-85mm IS, Canon 15-85mm IS, Venus Laowa 15mm f/4 Wide Angle 1:1 Macro, and Raynox 250 lenses.