One that i dont pick up that often, a Nationally Scarce species. Picked up in West Sussex. Monocephalus castaneipes @britishspiders.bsky.social

Lichen Running Spider at #RSPBArne today #Spiders @britishspiders.bsky.social

Centromerus serratus picked up this week, I havent seen any since Feb this year. So now its one female and one male this year from a West Sussex site. @britishspiders.bsky.social

The seven year old in me still gets excited when I go to Bristol, whatever the nature of the visit. There's always time to stop to play with Segestria florentina! @britishspiders.bsky.social

I found this spider on the railings under the road bridge over the River Taff. Though it was sitting in its retreat, there was an orb-shaped web next to it, with a missing sector, but this doesn't look quite right for Zygiella x-notata. Thoughts please, spider people.

Yesterday's #Aractober is this epigyne. After last weekends ID session giving the Linys another go. Still working out what it is so any help would be appreciated!

Great to see Steatoda albomaculata at long last, in high numbers too. Interesting that it doesn't seem to want to move far, a bit like Asagena phalerata which it was alongside. The webs are brilliant, a typical Theridiid snare underneath very low vegetation over sand @britishspiders.bsky.social

1/2 Looking for Badumna! Over the past two weeks this Aussie has been spotted at stores from Barry, Cardiff, Brecon and Llandudno! When visiting any local store type mini garden section could you check for Badumna? The webs are easy to spot. Take a picture and add to the feed for ID help.

#Aractober. Segestria cf. bavarica (juv) from the shed door. This one decided to sprint up my jumper sleeve! Tbh it's not the first time it's happened. Think I managed to shake it out😂 @britishspiders.bsky.social

I've forgotten how satisfying it is putting similar species side by side this way! The undersides of male Zora armillata (above) and spinimana (below), with their respective palps. Nice to compare the coxae of legs4 - the "brillo pad" of hairs in Z. spinimana is clear. @britishspiders.bsky.social

Testing the new hand gel on palps from todays excursion to Sweet Briar Marshes in Norwich. Clubiona stagnatalis, Bathyphantes approximatus and a Centromerita bicolor so large I didn't think it was a linny.

I knew I Zora difference!! How ridiculoudly satisfying to see pics of all four of these species together. Clockwise from top left - armillata, spinimana, silvestris, nemoralis. @britishspiders.bsky.social @cofnod.org.uk @graemelyons.bsky.social @chalkspring.bsky.social @ajcann.bsky.social

No 15 and halfway ish there #Aractober it's the appropriately named 'black bummed money spider' Ostearius melanophygius @britishspiders.bsky.social @tylanberry.bsky.social

Really awesome to see an adult male of the rare Glyphesis servulus in Cambridgeshire recently. A right whopper at 1mm! 😁 @britishspiders.bsky.social @cofnod.org.uk @graemelyons.bsky.social @chalkspring.bsky.social

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

@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

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

@britishspiders.bsky.social @tylanberry.bsky.social @graemelyons.bsky.social Me: I don't have a favourite UK spider Also me: 😍 #Arachtober

Another from Wicken - these appear to have the same epigyne, but I think maybe they aren't yet mature females. I'm sure @tylanberry.bsky.social told me what they were but I can't recall. I'm wondering @britishspiders.bsky.social do the Tm ratios and spines work for immature linnys?

Many people are afraid of spiders. However it would be hard to be scared of this one. This is Aelurillus v-insignitus, which I found on the dune heaths in Dorset last year. A lovely little jumping spider, very charming! Thanks to @tylanberry.bsky.social for the ID! @dorsetwildlife.bsky.social

No. 2 and 1 in the weirdest spider palps contest (UK chapter). Left: Labulla thoracica, right: Mastigusa arietina. Lucky enough to see both within a week, and finally photograph Mastigusa properly (thanks to @chalkspring.bsky.social) @tylanberry.bsky.social @britishspiders.bsky.social

Going through a few tubes left over from spring - East Winch in May this time. I think this must be Agyneta saxatilis, with the 'thumbs up' apophysis.

Sub-adult Horrid Ground Weaver Nothophantes horridus in Plymouth, Devon today. The first record for September of this UK endemic spider. They mature in November with a peak of activity for the adults in December.

A random encounter at a refurbished farmhouse - I wondered what this little orange blob moving slowly across the floor was. As soon as I saw the distinctive dash, the game was up! Oonops domesticus, new to the Lizard Peninsula @britishspiders.bsky.social @graemelyons.bsky.social @cofnod.org.uk

Four nice Araneus'. Two forms of Araneus marmoreus, a quadratus, and a nice dark brown diadematus. @britishspiders.bsky.social

@britishspiders.bsky.social @tylanberry.bsky.social @cofnod.org.uk Great to run into an old friend... Mastigusa arietina

This little cutie literally fell on my head when I was on break, I'm really struggling to figure out the ID - not something I've come across before. @britishspiders.bsky.social

If #spiders were supermodels..........perfecting that middle distance look A/W 2025 ...Attulus Saltator..... @britishspiders.bsky.social

The smallest Araneus diadematus web from an adult female that I've ever seen. Can't tell where the hub ends and the capture threads begin! @britishspiders.bsky.social @cofnod.org.uk @graemelyons.bsky.social @chalkspring.bsky.social

Getting out of the car in Camborne: Cake collection....3 minutes. Badumna longinqua count....5 It's as easy as...errrm...cake? @britishspiders.bsky.social @graemelyons.bsky.social @cofnod.org.uk @chalkspring.bsky.social

Surprised to see adult Pirata last week, amazed that it's P. tenuitarsis! Same reserve as the last time I saw it 3years ago, but an isolated Sphagnum mire at the other end of the very well worked site. Incredibly localised species. @britishspiders.bsky.social @graemelyons.bsky.social @cofnod.org.uk

Exciting work in progress seeks to explain the bizarre and wonderful diversity of Peacock spiders: www.bbc.co.uk/news/article...

Good to finally get across to the border and do a bit of conifer wood bashing in Devon. Didn't take me long to find the mossy habitat for Centromerus serratus. It was accompanied by the usual Saaristoa firma and Porrhomma pallidum. @britishspiders.bsky.social @graemelyons.bsky.social @cofnod.org.uk

@britishspiders.bsky.social @tylanberry.bsky.social @graemelyons.bsky.social @cofnod.org.uk Me, before coffee! #ukspiders #arachnids

@britishspiders.bsky.social @tylanberry.bsky.social @graemelyons.bsky.social I didn't manage a trip up on the Cairngorms plateau, but found some good spiders closer to sea level - Raft Spider (Dolomedes fimbriatus), at last, Northern Bear (Arctosa cinerea), Pardosa agricola, Bolyphantes

The Nationally Scarce jumping spider Marpissa nivoyi, seen along the Tennant Canal at Jersey Marine yesterday. Though the species occurs mainly on coastal sand dunes, I've only ever encountered it in wetlands near the coast. @britishspiders.bsky.social @sewbrec.org.uk

Always keep your eye out for collections of dirt hanging in mid air at the base of walls, particularly where you see Lasius niger marching in lines. Note the thick support threads and longer, hollow retreat structure - this is no Cryptachaea blattea, this is C. riparia! @britishspiders.bsky.social

@britishspiders.bsky.social @tylanberry.bsky.social @graemelyons.bsky.social A good start to my Scotland trip, but the weather forecast doesn't look promising. Clubiona subsultans, Dipoena torva (not shown), Cryphoeca silvicola, and a decent supporting cast

Not what I expected to see in a bit of slightly ranker maritime grassland overlooking the marvellous Penhale Sands. This Argiope bruennichi has chosen its view well! @britishspiders.bsky.social @cofnod.org.uk @graemelyons.bsky.social

Choughs over Kynance is always a rather lovely sight...even if they are pulling Atypus affinis webs out of the ground and eating the residents. This silk purse web was lying loose on the ground, looking like a cracked egg in the wake of a good marauding. Clever corvids! @britishspiders.bsky.social

I went back for more Wasp Spiders and wasn't disappointed. I even saw a male mate guarding, and due to forced perspective he appears bigger in my photo compared to his intended mate. Also Neoscona adianta and Araneus quadratus. @britishspiders.bsky.social

This liny was sieved from riverine litter from a shaded and dark wooded river valley on Dartmoor. I was rather intrigued as to what it could be...weirdly, it's Mermessus trilobatus. More weirdly, why are it's eyes massive!?! @britishspiders.bsky.social @cofnod.org.uk @graemelyons.bsky.social

Is this OK for Ero aphana? Sternum marking visible in 2nd photo. Beaten off Ivy in the lane behind the house. @britishspiders.bsky.social @tylanberry.bsky.social @graemelyons.bsky.social

Very few spiders left of the cliffs at the moment, everything has vanished now. Nice to see this little Liny on some precarious cliff edges in North Cornwall yesterday though. Micrargus laudatus, not one that crops up too often. @britishspiders.bsky.social @cofnod.org.uk @graemelyons.bsky.social

I mean, you have to be a bit of a bumbling fool to get caught by a Pisaura mirabilis guarding her eggs. I suppose Rhagonycha fulva fits that bill perfectly! @britishspiders.bsky.social

Available on the web. Buy a copy and get stuck in. Obviously with a @yorkshiretea.bsky.social ☕️🫖 @cieem.bsky.social @royentsoc.bsky.social @nhm-london.bsky.social @britishecologicalsociety.org @britishspiders.bsky.social @britishbugs.bsky.social @savebutterflies.bsky.social @rspb.bsky.social

A stare off between Talavera aequipes and me. It's very rare that these little things give me an opportunity to photograph them. This ~2mm male was unusually happy to oblige me! @britishspiders.bsky.social @cofnod.org.uk @graemelyons.bsky.social @chalkspring.bsky.social

Great to see Theridiosoma gemmosum in its web which is strung across a hoof print at some wet heath in Devon. I'm amazed it let me get so close, they normally drop out of the web in an instant! @britishspiders.bsky.social @cofnod.org.uk @graemelyons.bsky.social

Some more special spiders from under stones on the Dorset cliffs - Gnaphosa lugubris and an absolute tank of a Phaeocedus braccatus. Interesting how the fauna on the limestone differs to the granite that I'm used to in Cornwall. @britishspiders.bsky.social @graemelyons.bsky.social @cofnod.org.uk

That's 3,049 #spiders identified, mostly down to species😅 time for the stats and write-up now!