Tegwyn

Shame you didn't find any this time. Your right about the photo, Eratigena. Not possible to decide which one without microscope work.

Platnickina tincta. Mostly juv. this time of year. Easy to find amongst ivy in my area. Have used an older photo of a more mature one as they are tiny atm. #Aractober

Wacky unicornis - two from Sundays efforts in the Wicken fens. I can't spell Walckenaeria. Or can I?

#arachtober A-Z:

Day 6 - F for Floronia - the chameleon spider
Day 7 - G for Gnaphosa (the best spider genus in the best spider family, no other opinions accepted)
Day 8 - H for Heteropoda - giant huntsman spiders (pictured is the delightful H. davidbowie)

@britishspiders.bsky.social

Will try and get a look under the microscope over the weekend. Ta

Definitely the smallest sub/adult non money spider I've yet found. Almost passed it by but the spinnerets caught my attention. Need someone to confirm ID pls @britishspiders.bsky.social Hahnia sp. Possibly H.nava as long hairs on the abdomen? New for me. #Aractober @tylanberry.bsky.social

Mark Telfer and I only went and refound Aulonia albimana on the Isle of Wight two days ago! Quite possibly the best spider find of my life! Lots of other records too. analternativenaturalhistoryofsussex.blogspot.com/2025/10/whit...

#spiders #Isleofwight #biologicalrecording #panspecieslisting

Amazing find, certainly one to remember!

Another hugely important find in the world of British spiders!!

I'm still shook by this, it's like 5 mice taking down a lion, but the lion can fly 😳

A plan view of a eight legged invertebrate that has two long arms reaching out from its head with crab like claws on the end. The body looks like one large reddy brown oval, with the main portion bisected by a lighter line, with each side split into 10 regular sections. The body, arms, and legs, are covered in tiny short hairs, with occaisional longer ones which act as sensory organs.

A pseudoscorpion for #arachtober. A Compost Chernes [pselaphochernes scorpioides] from the garden compost heap.
#wildlifefrommywindow #invertebrates #ukwildlife #gardenwildlife #macro

Lots of money spiders, linyphiidae, today. All the males were ballooning. Females seemed to be staying put. In one pic you can just see a toothed carapace. Also included someone having a spider lunch. Didn't keep any for ID but did find something new for me. Will check it for tomorrows #Aractober

Antistea elegans (Marsh Comb-tail)

Cicurina cicur

@britishspiders.bsky.social @tylanberry.bsky.social @graemelyons.bsky.social
Two spiders that I seem to find if I'm NOT looking for them:
Antistea elegans is a spider I've wanted to find on the Bucks section of the R. Chess, having years ago seen Doug Marriott's records for it on the Herts side

Yep, outside plant section on the central shelving. You can easily see the webs. Take a few of the black topper caps (pic) and look inside. S.b in the high street and surrounding streets, may be at B&M Look for the retreats with trip wires on fences, brick/stone work. Can be tricky to get out.

If your in that area you should also look for S.bavarica, found lots nearby

A large orbweb spider with a pale yellow abdomen which has a dark brown patch towards the rear. The spider is climbing up a brown reed stem.

Side view of a large orbweb spider which has a yellow abdomen with a dark brown patch towards the rear and dark brown lines giving a marbled effect to the flanks. The spider is head down on a green reed stem.

A pale straw coloured spider with a pair of dark brown stripes running the length of the head and dark stripes and spots on the abdomen. The pale legs also have dark lines. The spider is in a white plastic tray having been sieved from a pile of cut vegetation.

A little spider with large eyes on the underside of a whitish stone. The spider's head is pale brown with a dark area at the front, flecked with pale hairs. The legs are also pale brown while the abdomen is pale grey with dark, broken longitudinal stripes.

A trio of spiders from yesterday's little explore in west Norfolk for #Arachtober Araneus marmoreus and my 2nd ever Zora spinimana from Boughton Fen and a diminutive Euophrys frontalis found in Bodney churchyard. #arachnids #spiders #invertebrates

Our recommended event this week is the Unknown Wales conference, at National Museum Cardiff and online this Saturday: museum.wales/cardiff/what...

A suprise find, plus a new species for me today #Aractober First noticed the distinctive web, exactly as described. Quick look and there they were... Badumna longinqua. Lots of webs in the Barry B&M, guessing another location for S.Wales. @britishspiders.bsky.social @sewbrec.org.uk @cofnod.org.uk

At least it's a spider 😂 Thanks, could of sworn it had the tuning fork mark! (wasn't wearing glasses 😞)

Surprise find while looking at a stone wall for a theradid. One of the Otter spiders, Pirata/Piratula, a juv. male. They are mostly associated with wet habitats. #Aractober

A striking red spider with a round body perches on a dried leaf. The body has patterning that makes the spider similar in appearance to a strawberry!

We're big fans of spiders over here. This gorgeous red one is the species Araneus alsine, commonly known as the Strawberry Spider. Any guesses why? 👀🍓

📷 ldchambers on iNaturalist
📍 United Kingdom
🔗: www.inaturalist.org/observations...
#ObservationOfTheDay

Another Harvestman for today's #Aractober. This time Dicranopalpus cf ramosus with it's distinctive forked palps and resting leg position. If you want to find out more info visit harvestmen.fscbiodiversity.uk

Don't know if I'll have time for a daily #arachtober find this year, so I'll go with an A-Z of genera instead.

A for Amyciaea (Thomisidae), an ant-mimic
B for Bijoaraneus (Araneidae) - 'kidney garden spider'
C for Corinnomma (Corinnidae), another ant-mimic

@britishspiders.bsky.social

D is for Dysdera (Dysderidae), the iconic woodlouse spiders
and E for Euryopis (Theridiidae) - master ant-hunters

@britishspiders.bsky.social

Fascinating

A quick video of an Argyroneta aquatica replenishing it's oxygen from its underwater web. @britishspiders.bsky.social

Stunner

Ero tuberculata, a rather scarce Pirate Spider is found mainly on mature heathland on tall heather and gorse, but sometimes also in houses. It searches out the webs of other spiders in order to feed on the occupants

@britishspiders.bsky.social @tylanberry.bsky.social @graemelyons.bsky.social
Me: I don't have a favourite UK spider

Also me: 😍

#Arachtober

#Aractober. Today it's a harvestman, L.blackwalli (correct me if wrong pls) Only about 30 species in the UK. One fused body part, many have long thing legs, 2 eyes and no silk.

All looks normal for the start of our BAS field weekend at Wicken Fen with a great talk on the conservation history of this iconic site, but storm Amy is winding up outside. We'll need luck for the 4th Arachtober!