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Arachtober @arachtober.bsky.social · 10/10/2026

#Arachtober 10th is also #JumpingSpiderDay. I found this Bold Jumping Spider (Phidippus audax) while doing the #CityNatureChallenge with my girlfriend. She had to help me get prickly pear spines out of my pants shortly after this shot. #spider #macro #macrophotography #arachnid

Macro photo of a jumping spider on cactus.

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Shreyas Kuchibhotla @snake-spider-et-al.bsky.social · 09/10/2026

I've been severely lacking in my #arachtober duties, so I thought I'd finish what I left halfway last year - an A to Z of arachnid genera. @arachtober.bsky.social A for the inimitable Argyroneta (Argyronetidae), the only spider known to live an entirely aquatic lifestyle.

A water spider with a brown carapace and grey abdomen faces the camera

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Arachtober @arachtober.bsky.social · 09/10/2026

Butterfly Orbweaver and Flies - #Arachtober 9 This pair of Signal Flies (Senopterina caerulescens) did not seem to mind being watched by me or the Butterfly Orbweaver (Araneus pegnia). Found in South Texas. #spider #macrophotography #flydayfriday

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Arachtober @arachtober.bsky.social · 09/10/2026

Oops. I have no clue how I made such a typo. B and P aren't even close on the keyboard.

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Tegwyn @arachnoteg.bsky.social · 08/10/2026

#Arachtober Letter H today. Holocnemus pluchei, Marbled Cellar spider, fancy version of the common Celler spider P.phalangioides. First recorded here 2004 and generally confined to garden centres and warehouses. Now established at a handful of sites. @britishspiders.bsky.social @sewbrec.org.uk

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Evelyndroid's Aperture Science and Bugge-Finding 🏳️‍⚧️🕷️ @apsciencebylyn.bsky.social · 08/10/2026

*tiny airplane noises* (Mr Phidippus richmani, being a very silly lad 🖤) #EmotionalSupportSpood #Arachtober

Fancy floofy Phidippus jumping spider boy, his 1st segment on his 1st leg pair so magnificently floofy it's brushing his bluish green face. He's perched on an oak twig, that 1st leg pair spread wide likes he's doing pantomime flying airplane

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Arachtober @arachtober.bsky.social · 09/10/2026

Difoliate Orbweaver - #Arachtober 7 I have always liked these small orbweavers. They have such a pretty pattern across the abdomen, and their eyes shine red when caught in a flashlight. Found in South Texas. #spider #arachnid #macrophotography

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Spidermax @spidermax3000.bsky.social · 07/10/2026

For #arachtober: my favorite of the fishing #spiders Six-spotted fishing #spider - Dolomedes triton (Shot near Cincinnati 4-24-24) 🕸️🕷️ #photography #macrophotography #wildlifephotography #wildlife #nature #animal #invertebrate #arachnid #spidersky #ento

A six-spotted fishing spider (Dolomedes triton) anchored to an aquatic plant at their abdomen and back legs as they stretch their front legs out over the murky, still surface of a vernal pool to look for food. Their head and front legs are pointed toward the bottom right of the frame. Their abdomen and back legs are in shadow while their front legs and cephalothorax are in the light.

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Marc A. Milne @forthespiders.bsky.social · 07/10/2026

October is Lost Species month (www.rewild.org/lost-species) so to celebrate, I will be posting about some of the species our lab has recently re-discovered, including Scotinella pennimani. This spider was last seen in 1967 but we re-discovered it last year while hiking through Okefenokee Swamp, GA.

Scotinella pennimani female habitus. A dorsal view of a spider with a brown cephalothorax, yellow legs, and a gray abdomen with white marks.

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Arachtober @arachtober.bsky.social · 07/10/2026

This is one of my recent favorites, a Crescent-eyed Spider in this genus, Selenops. The family is called ‘Flatties,’ and you can see why, they are extremely flat spiders. Their flat shape lets them squeeze under bark or hide perfectly against a wall. #Arachtober #spider #macro #macrophotography

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Kyla Tilley 🎶 🎸 🎤 👠 🫐 @kylatilley.com · 05/10/2026

For today's #arachtober post I'd just like to share one of my favourite Youtube channels. This is a spider enthusiast who makes wonderful videos about the spiders that live in your house. It also has a very catchy theme song that is always stuck in my head. www.youtube.com/@travismcene...

youtube.com

Travis McEnery

Welcome to my channel! Ever wonder what that spider on your kitchen ceiling is? What it's going to do next? Whether you should be worried about it or not? Here you'll find videos that take an…

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Rob 🇨🇦 @rockinbones.bsky.social · 05/10/2026

#Arachtober #Spider #Inverts Crab Spider waited for something smaller .

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Arachtober @arachtober.bsky.social · 05/10/2026

Hogna antelucana. I love wolf spider closeups. They have such cute faces. #Arachtober #spider #macrophotography #arachnid

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Arachtober @arachtober.bsky.social · 05/10/2026

Green Lynx Spider (Peucetia viridans) - #Arachtober 4th Another from our Arachtober 1st spider hunting before the rain. I always like to check prickly pear for spiders. #spider #macrophotography #arachnid

Green Lynx Spider on Prickly Pear Cactus.

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Fiona Cross @drspidernz.bsky.social · 04/10/2026

I made an interesting Freudian slip yesterday when I said "#Arachtober goes for all year!" 🕷️

Portia (a fluffy, brown, legendary jumping spider) looking down at a piece of text that says "Happy Arachtober!"

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Arachtober @arachtober.bsky.social · 03/10/2026

I found this cut little burrowing wolf spider on one of my walks. She must have been used to foot traffic, inches from the sidewalk, so I saw her a few days and then I brought out my camera on Halloween night last year. Geolycosa riograndae #Arachtober #spider #macrophotography

Closeup face of a wolf spider in her hole.

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Arachtober @arachtober.bsky.social · 02/10/2026

Happy #Arachtober 2nd and #FlyDayFriday! I went spider hunting last night and found at least 15 species. And when I got home, I realized this one had caught a fly. I had a very fun Arachtober 1st! Labyrinth Orbweaver (Metepeira labyrinthea) #macrophotography #arachnid #insect

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Arachtober @arachtober.bsky.social · 01/10/2026

For #Arachtober 1st, an image I have been saving for 11 months. This encounter was exciting because Pirate Spiders do not weave orb webs. They commandeer other spiders' webs. She likely ate the resident. This was the first I have seen in a web. Pirate Spider (Mimetidae) #macrophotography #spider

Small white and tan spider in an orb web.

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Arachtober @arachtober.bsky.social · 01/10/2026

Malachite Beauty Sleep I thought I would do one butterfly before all the spider posts start. Found on a night hike last November while I was looking for spiders and mothing. #butterfly #macrophotography #insectphotography #backlit

Backlit green Malachite butterfly sleeping upside down.

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Arachtober @arachtober.bsky.social · 30/09/2026

October 1st marks the start of the 20th year of #Arachtober! Join the celebration throughout October by sharing your photos of #spiders, scorpions, and other #arachnids using #Arachtober. Explore the hashtag and connect with other enthusiasts around the world. Learn more at Arachtober.com

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Nijat Nariman @nnariman.bsky.social · 04/11/2025

How cool is this?!!

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Arachtober @arachtober.bsky.social · 04/11/2025

Helping out with a Night Hike at the Texas Butterfly Festival last night, I found this Flattie on one of the attendees. We had a really good time. We saw lots of spiders and I got two new moths species. Crescent-eyed Spider (Genus Selenops) #spider #macro #macrophotography #naturephotography

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Arachtober @arachtober.bsky.social · 03/11/2025

Yep. I just had a yellow sac spider tonight that tricked me. I see ghosts more often.

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Arachtober @arachtober.bsky.social · 02/11/2025

Happy All Souls' Day! Continuing with spiders, it's only fitting to post a Ghost Spider. This is a ghost spider from the genus Hibana. They earned their spooky name from their pale, semi-translucent bodies and their incredibly fast, phantom-like movements. #spider #macro #macrophotography

Macro photo of a small light colored spider on a leaf.

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Arachtober @arachtober.bsky.social · 02/11/2025

They are such dedicated moms. So many people having extra #Arachtober posts this year. Awesome!

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Arachtober @arachtober.bsky.social · 01/11/2025

Happy All Saints’ Day! Saint Felix of Nola, fleeing persecution, hiding in a small opening in a wall. A spider spun a thick web across the entrance, hiding him from pursuers. Because of this miracle, Saint Felix is considered the patron saint of spiders. #AllSaintsDay #spider #naturephotography

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Arachtober @arachtober.bsky.social · 01/11/2025

Happy Halloween!! Another fun but exhausting #Arachtober. Tropical Orbweaver (Eriophora ravilla) #Halloween #Spider #stereography #HappyHalloween

Stereo image of an orbweaver spider in front of a glowing skeleton.

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Arachtober @arachtober.bsky.social · 01/11/2025

Buried Alive - #Arachtober 31 This Wetland Giant Wolf Spider (Tigrosa helluo), paralyzed by a Rusty Spider Wasp (Tachypompilus ferrugineus) sting is being dragged to its grave where it will be eaten alive by the wasp's larvae, in the dark. #spider #wasp #insect #macro #macrophotography #Halloween

Macro photo of a wasp dragging a wolf spider.

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Arachtober @arachtober.bsky.social · 01/11/2025

The Blacklight Ball - #Arachtober 31 Two Striped Bark Scorpions dancing! (Centruroides vittatus)

A pair of scorpions holding claws under ultraviolet light.

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Arachtober @arachtober.bsky.social · 01/11/2025

Happy Fly Day Friday! - #Arachtober 31 Crab Spider (Genus Mecaphesa) Western Honey Bee (Apis mellifera) Freeloader Flies (Family Milichiidae) Southern Seaside Goldenrod (Solidago mexicana) #FlyDayFriday #macro #macrophotography #naturephotography #insect #insectphotography

Macro photography of a crab spider eating a bee with flies.

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Jen Cross @jencross.bsky.social · 01/11/2025

Pseudoscorpions are small arachnids that are often overlooked. They prey on clothes moth larvae, carpet beetle larvae, booklice, ants, mites, and small flies. Pseudoscorpions will sometimes hitch rides to new locations on other insects. #Arachtober

A tiny arachnid with a gold body and brick-reddish claws. It is standing on bark that looks like rough sandpaper.

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Jen Cross @jencross.bsky.social · 01/11/2025

Vinegaroons are arachnids that are not spiders. They have a large pair of pedipalps that are used to catching and crushing prey. They get the name Vinegaroon because they can discharge foul smelling liquid to deter predators. #Arachtober (Mastigoproctus sp.) Portal, AZ

A large brown arachnid with a stout pair of pedipalps and eight legs, two of which have evolved into sensory whips. It is standing on my hand with desert mountains in the background.

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Fiona Cross @drspidernz.bsky.social · 27/10/2025

A podcast episode for #Arachtober! "New Zealand's Dr Fiona Cross tells a tale of two spiders: one that outsmarted its researchers and another that's mysteriously drawn to our smelly socks." Some legendary spiders, as well as my story of what inspired me to work with them 🕷 pod.link/aHR0cHM6Ly9m...

pod.link

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Arachtober @arachtober.bsky.social · 31/10/2025

Take it all off! - #Arachtober 31 Molting Western Spotted Orbweaver (Neoscona oaxacensis) #spider #macro #macrophotography #naturephotography

Macro photo of a spider hanging upside down shedding its old exoskeleton.

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Arachtober @arachtober.bsky.social · 31/10/2025

I noticed a quickly shutting tiny door. I pried it open to see this set of legs. Only good shot I got. Possibly a Southwestern Trapdoor Spider (Eucteniza relata). First trapdoor spider I have found. Found in South Texas. #Arachtober #spider #macro #macrophotography #naturephotography

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Arachtober @arachtober.bsky.social · 29/10/2025

November is butterfly and bird migration season. Not that I am pushing, just letting you know this is our best time of year.

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Arachtober @arachtober.bsky.social · 29/10/2025

South Texas, Bentsen-Rio Grande Valley State Park.

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Arachtober @arachtober.bsky.social · 28/10/2025

#Arachtober 28 Leptoctenus byrrhus. A pretty Lycosoidea spider in the Wandering Spider family (Ctenidae) that I don't see very often. #spider #stereophotography #macrophotography #naturephotography

Stereo macro photography of a Wandering Spider.

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Arachtober @arachtober.bsky.social · 28/10/2025

Hackled Orbweaver (Philoponella semiplumosa) - #Arachtober Spiders in the family Uloboridae do not have venom. #spider #macro #naturephotography #macrophotography #stereophotography

A small spider in a circular web decoration.

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Arachtober @arachtober.bsky.social · 28/10/2025

If you ever make it down this far (Rio Grande Valley, almost the border), I will find you some interesting spiders. 🕷️

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Jen Cross @jencross.bsky.social · 28/10/2025

Read more about these amazing flying spiders in this article. There is also linked video. #Aarchtober news.berkeley.edu/2015/08/18/b...

news.berkeley.edu

Biologists discover skydiving spiders in South American forests - Berkeley News

One type of neotropical spider is able to maneuver as it falls

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Arachtober @arachtober.bsky.social · 28/10/2025

I had read that but never seen a video. I only found we have Selenops here a few years ago. Now I find them frequently at nature parks. We counted 8 on one palm tree trunk a few nights ago.

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Jen Cross @jencross.bsky.social · 28/10/2025

How about some spiky spiders tonight? This one is Micrathena acuta, a spiny orbweaver found in the Ecuadorian Amazon rainforest. It is believed that the spines serve as a defense from birds and even predatory wasps. Cuyabeno Reserve, 2024

A spider with an orangish-gold cephalothorax and a pale colored abdomen with two large spines sticks out in opposite directions from the abdomen. The spider is sitting on a leaf.

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