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@juliejam.bsky.social Oct 9, 2026, 3:40 PM

A crab spider and bumblebee for #Arachtober. #spiders #bees #gardening 🌱 #bugsky

A White-banded Crab Spider perches at the tip of a Salvia farinacea flower stalk waiting for pollinators to grab. She is a white spider marked with small pink blotches in a V shape on her large bulbous abdomen. The spider sits with her shorter back legs gripping the flower and the two longer front legs on each side held together and swept back, ready to snap forward and grab. Misumenoides formosipes. (This spider is very similar to a Goldenrod Crab Spider, so I could be wrong on identification. ) This picture was taken two days after the bee pictures, but it looks like the same spider.

A white crab spider with a design of pink lines on the side of the abdomen clasps a much-larger bumblebee in her jaws and claws while upside-down on a blue mealycup sage flower stalk. The bee is a Common Eastern Bumblebee, Bombus impatiens. Seeing this kind of thing always makes me sad, but a spider's gotta eat.

A closeup of the spider holding the bumblebee. She is upside-down with her fangs inserted on the back of the bees neck. Oklahoma Northern Crosstimbers ecoregion 29a.

@spiderznbeetlez.bsky.social Oct 9, 2026, 3:32 PM

#Arachtober

@amypteride.bsky.social Oct 9, 2026, 3:30 PM

What time is it? It’s #Cheliceratime, #Fossilfriday & #Arachtober !
For this triple occasion, we're talking today about a cretaceous vinegaroon!

All the basic infos are here but if you want to learn more, there’s more in the thread below!⬇️🧵

#cretaceous #paleoart #arachnid #sciart #bugsky
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This vinegarroon is one of the few named species of this order from the entire Mesozoic era. It already looks quite modern in every details, and shares a lot of features with the current vinegarrons living in the Americas.

Size : 12-ish cm of body length
Time period : Early Cretaceous
Paleoart speculativometer : Few missing details

The animal drawn is a vinegaroon, an arachnid looking a bit like a scorpion with long thin first legs used as antennae

@jtkindt.bsky.social Oct 9, 2026, 2:35 PM

Poked around the yard last night after dark and took some #arachtober portraits. This is Say's Armored Harvestman (Libitioides sayi) which by name and appearance would fit in just fine in the Advanced D&D Monster Manual I had as a kid.

#bugsky #inverts

Crab-like reddish-brown arachnid with long legs, white markings on body and leg joints, crawling across a green leaf.

@buglady1104.bsky.social Oct 9, 2026, 1:46 PM

Love this! I didn’t even realize #invertober was a thing! 8 days in, and somehow it slipped by me. Dovetails nicely with #Arachtober too, and I hope you post something spidery before the month is out.

@gabbylawless.bsky.social Oct 9, 2026, 1:16 PM

I was coming into the greenhouse at work and the early morning light revealed this giant web in every little details.
#Arachtober #ECK #Bugsky #Spider 🕷️🕸️

A spider in the center of its giant web, glistening under the early morning dew.

@ibycter.bsky.social Oct 9, 2026, 12:11 PM

For #Arachtober, those interested in spider identification should check out the Spider Genitals project on iNaturalist. It's a really great source of close up imagery of palpi and epigyna for reference when you are doing ID's. Often has habitus images too! www.inaturalist.ca/observations...

@rickmartin.bsky.social Oct 9, 2026, 11:04 AM

A small garden spider exploring a spike of purple salvia nemerosa flowers 🌱🕷️

#Arachtober #BugSky #Arachnids #Spiders #FlowersOnFriday #PurpleFriday #EastCoastKin

@arachtober.bsky.social Oct 9, 2026, 9:28 AM

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

@arachtober.bsky.social Oct 9, 2026, 4:35 AM

Crap Spider #Arachtober 8th
#spider #arachnid #macrophotography

Closeup of a crab spider on purple flower.

@arachtober.bsky.social Oct 9, 2026, 4:33 AM

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

@nev.flipping.rocks.ap.brid.gy Oct 9, 2026, 3:24 AM

#Arachtober 8: a twofer with bonus #LichenSubscribe, why not. A sumo mite (_Allothrombium_) encounters a spiderling, probably some kind of cobweb spider?

At up to like 3-4mm in body length, sumo mites are considered very large mites. (Any mite you can easily […]

[Original post on flipping.rocks]

In a shady, lichen-encrusted crevasse on a tree trunk, a tiny almost translucent little spider reaches out a leg to a large fat vaguely peanut-shaped red mite that has tripped a silk line. The mite dwarfs the spider.

@bugeric.bsky.social Oct 9, 2026, 2:00 AM

This very large orbweaver, genus Araneus, was one of several under the eaves of the visitor center at Las Vegas (New Mexico, USA) National Wildlife Refuge. Happy #Arachtober 8th. Photo taken yesterday morning. #bugsky #bugwatching #spiders #arachnids

Large, extremely rotund spider, beige in color with a vague black crescent across the front of the abdomen. Legs are pale with faint darker bands. Spider is sitting in a silken retreat adjacent to its circular web, under the eave of a building.

@dolomedes.bsky.social Oct 9, 2026, 12:56 AM

#arachtober orb weaver in her latticed retreat, bonus crazy caterpillar #bugsky

an orbweaver looking out from its silken retreat. her legs and prosoma are reddish and her large abdomen is almost white (from this angle). she's in a large tube of silk built onto a large curled leaf
Araneus thaddeus

the head and thorax of a caterpillar with numerous projections, all covered in thick setae - spiky! it is patterned with black, white, orange, and blue
Junonia coenia i reckon

@rockinbones.bsky.social Oct 8, 2026, 10:38 PM

#Arachtober #Spider 🕷️
I wonder how successful it was on this side of the flower.

@duleyp.bsky.social Oct 8, 2026, 8:19 PM

A Noble False Widow #spider has taken up residence in our kitchen. I honestly think she might have been there 2yrs, which doesn't say much for my dusting. I love them, please ignore the scaremongering bollocks the tabloids print about them. #arachtober #wildlifefrommywindow #invertebrates

A square photo of a spider against a light brown wood background. She is viewed from above, sat in the bottom left corner of the frame, facing the top right corner. Her eight legs are bright red, her abdomen is dark brown with a crescent of white on the front edge of it and a pale white pattern in the middle.

@randyfogarty.bsky.social Oct 8, 2026, 6:01 PM

Tan Jumping Spider (Platycryptus undatus)

#arachtober #nature #jumpingspiders #macrophotography #wildlifephotography