British Arachnological Society

British Arachnological Society

@britishspiders.bsky.social

The British Arachnological Society (BAS) is the UK’s only body devoted exclusively to the study of arachnids (spiders, harvestmen & pseudoscorpions): https://britishspiders.org.uk. To record GB spiders, please use https://irecord.org.uk/enter-srs-records.

2,671 Followers 117 Following 642 Posts Joined Nov 2024
2 hours ago

We'd agree with that, though most likely similis

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1 day ago
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Porrhomma species and with the spine count on the legs ive ruled out all of them down to one species, of course this will be sent to my recorder to confirm but im 95% sure. Its Porrhomma cambridgei! A rare beast.
From a path in damp woodland.
@britishspiders.bsky.social
#spiders #arachnid #spider

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10 hours ago

Yes, Amaurobius ferox

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1 day ago
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Obsidentify says (I know ID not guaranteed) Amaurobius ferox (Black Lace-weaver Spider). Also checked Britain's Spiders field guide, needs gendet? Seen at night (I was on toad patrol rescue) on cycle path, so I rescued it from bike tyre squishing! Duddingston, Edinburgh. @britishspiders.bsky.social

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2 days ago
A flint towered church in the misty gloom. Two bicycles are propped up against the wall. Inside the church looking at the stone font which has four stone lions around the base and various figures around the bowl including an angel (?) and a lion. A transparent rule marked off in centimetres and further divided into 10ths of a millimetre. Two tiny circular objects are sitting on top, measuring about 1 mm. They are the corpses of two pseudoscorpions which were found inside the church on a dusty ledge. Close up of the dead pseudoscorpion that has strands of cobweb on it and bits of detritus. The claws are easily discernible.

Only a short cycle ride in the misty gloom today. Stopped at St Mary's, Shotesham. Scanning horizontal surfaces inside, I spotted two tiny dots - Cheiridium museorum, sadly dead. These so-called Book Scorpions are hard to find, several of my records are dead specimens found in churches in cobwebs.

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2 days ago
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After searching for this spider at other sites and failing to find it, i was glad to pick this male up at the weekend, old records from the site nearly 20 years old. Zelotes electus.
@britishspiders.bsky.social
#zelotes #spiders #arachnids

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3 days ago
Hypomma bituberculatum female Hypomma bituberculatum male left, female right Hypomma bituberculatum male Hypomma bituberculatum male

To make up for my boo-boo, here are some Hypomma bituberculatum.

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3 days ago
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Spending a bit of time checking the external brickwork whilst at a party....as one does! First time I've seen Sardinidion blackwalli in a few years, still only know it from two gardens in St Austell down here. Must be elsewhere in Cornwall! @britishspiders.bsky.social

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3 days ago
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A cute money spider, seen 04/03/26 Tamworth, #Staffs #Linyphiidae #Arachnid @britishspiders.bsky.social @graemelyons.bsky.social @ajcann.bsky.social

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3 days ago

Don’t like to disagree with @ajcann.bsky.social but first thought was Hypomma bituberculatum. Asked @tylanberry.bsky.social for thoughts -> I don't think Gonatium, they don't have the dark cephalic region. I think Hypomma bituberculatum/fulvum or maybe Gongylidium rufipes

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4 days ago
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#Saturdayspider time. I finally found a 'Garden centre spider' Uloborus plumipes. An old world species which seems to have made itself quite comfortable in the house plant section of my local garden centre.

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4 days ago
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Ropey pic of the little blighter but think Clubiona comta moth trap by-catch last night VC61
Any thoughts very welcome @panspecieslisting.bsky.social
@britishspiders.bsky.social

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4 days ago

Definitely a Clubiona sp., probably comta, although as it’s a juvenile, hesitant to be definite

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5 days ago
A tiny pale grey baby harvestman wandering over some dark soil on a stone. To the top and bottom of the photo are numerous little round harvestman eggs, pale grey in colour. Close-up of the baby harvestman which has short, pale translucent legs and a slightly darker body with faint grey markings. In the bottom left corner is a cluster of small, round pale eggs. Close-up of the harvestman eggs which are pale and round. Within several of them you can clearly see the pair of dark eyes of the tiny baby harvestman inside waiting to hatch out. In several you can also just make out the legs wrapped around the body.

Cuteness overload: adorable baby harvestman, newly hatched, alongside a cluster of eggs - the eyes of the babies are clearly visible inside the unhatched eggs and you can just make out the legs. They were found under a stone in my local cemetery. #arachnids #harvestmen

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5 days ago
Baby spitting spider on a painted wall.

Hurrah, my spitting spiders are back. This one is really tiny and needs to eat. One day, I'll get to see one catching something.

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6 days ago
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What I witnessed here, I think, was an attempt of a Lycosidae (most likely Pardosa sp.) to balloon? Anyone willing to confirm?

*Ballooning refers to a type of locomotion where a spider takes flight.

#SpiderSky #inverts #spiders
#WolfSpiders

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6 days ago

Very possibly. Wolf spiders don’t make webs (at least in UK) so the silk strands are only for moving from one place to another or for ballooning. However, wonder if that individual is too large to “balloon” 🤔
It then looks like it’s recycling the silk strands at the end of video.

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6 days ago
Preview
New Study Busts Myths About Feared Recluse Spiders A new study shows brown recluse spiders and relatives are in fact scarce, reluctant to bite, and mostly unlikely to cause the severe harm often attributed to them.

I'm saving this to send in reply to everyone who tells me they were bitten by or simply saw a Brown Recluse in their home here in the Pacific Northwest.

New Study Busts Myths About Feared Recluse Spiders: entomologytoday.org/2026/03/05/s...

@entsocamerica.bsky.social @britishspiders.bsky.social

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1 week ago
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The harvestman Rilaena triangularis. Found in woodland leaf litter, Long Melford, Suffolk.

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1 week ago
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Jumping Spider sp Evarcha seyun for #macromonday.
Fujairah, UAE - Feb 2026.

#ThePhotoHour #natgeoyourshot
#macrophotography #niffeature2026 #biodiversity #spiders #arachnids #macrohour #Nikonmea @britishspiders.bsky.social @arachnology.bsky.social #BBCWildlifePOTD @britishnatureguide.bsky.social

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1 week ago

How did you submit the record? iRecord? If so, I think you can edit the record altho’ I haven’t tried.

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1 week ago

Ero aphana (sternum checked) - female on the underside of the lid of our green bin when I put it out just now. Always a good place to check. Only my 2nd in & around the garden.
@britishspiders.bsky.social

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1 week ago
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@cofnod.org.uk will undoubtedly have a few suggestions. My contribution is Kryptonesticus eremita. Currently only known in the UK from a disused mine entrance on Flat Holm island and a Penarth sewer chamber.

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1 week ago
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A very small spider seen on Ash bark, 28/02/26, Tamworth, #Staffs A Theridion species @graemelyons.bsky.social @britishspiders.bsky.social #Arachnid #Spider

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1 week ago

There should be matures by May. It's not the easiest genus for reliable visual ID, but there's always help at hand!

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1 week ago
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Sticking with spiders for this one. Here's a female Walnut Orbweaver (Nuctenea umbratica) I found a couple of nights back. They have a slightly flattened abdomen allowing them to hide in cracks and crevices during the day.

#omsystem #ukspiders
#ukwildlife #macrophotography

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1 week ago

Yes, definitely a Pirata although I'd be bit cautious on species at this time of year, when they're immature.

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1 week ago
BAS recording schemes record entry form | iRecord

Yes, that looks good. Please do record via iRecord at irecord.org.uk/enter-srs-re...

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1 week ago
Preview
“The Cordyceps spider”: Taczanowskia waska sp. nov. (Araneae: Araneidae), a new spider species and a novel case of mimicry of an araneopathogenic fungus (Cordycipitaceae: Gibellula ) | ...

“The Cordyceps spider”: Taczanowskia waska sp. nov. (Araneae: Araneidae), a new spider species and a novel case of mimicry of an araneopathogenic fungus (Cordycipitaceae: Gibellula)
mapress.com/zt/article/v...

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2 weeks ago
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Due to various circumstances I have not had any trips out looking for spiders so far this year! Fortunately I have been looking after some spiders that have kept my interest. Not had anything to personally post so decided to share some pictures of local spiders from previous years.

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