Are you a student interested in Arachnology? Join our annual virtual student social is happening soon! 🕸️WHEN🕸️ Sunday, June 8, 6:30pm CST 🕸️WHERE🕸️ AAS student Discord 🕸️How to Register🕸️ If you’re not in the student Discord, send us a DM and we will share the link with you.

Early Bird Registration for the 2025 AAS Conference in Golden, Colorado ends April 30th! Additional events include an exclusive Linyphiid ID workshop and and a group excursion to Rocky Mountain National Park. Have questions? Send a DM! Register here: www.americanarachnology.org/aas-meetings...

When to invest in love? We re-analyzed the sex pheromone of a black widow using multidimensional chromatographic mass spectrometry, then measured the newly identified sexual signals in the field for a year. Open Access @ Journal of Chemical Ecology. doi.org/10.1007/s10886-025-01590-6

Spider Biology Field Course!! from July 1 - 9, 2025 experience the outstanding biodiversity of spiders and non-spider arachnids found in montane southeastern AZ; taught by Greta Binford, Paula Cushing, & Marshal Hedin $946 for tuition, room & board. See www.amnh.org/research/sou... for details.

welcome to the world new spider genus Siskiyu. you've been lurking in the dark, magical woods of far northern California for millenia. Now the humans have finally gotten around to telling your story, at least in part this research was funded by the NSF OA here zookeys.pensoft.net/article/1402...

The lab is delighted to release the first genome for the giant American vinegaroon! The slowly-evolving order Uropygi captures the strongest signature yet of the arachnopulmonate whole genome duplication. #biodiversity #genomics academic.oup.com/jhered/advan...

What is your favorite arachnid fact? 🕸️🕷️🦂

Whip spider (Paraphrynus laevifrons) covered with chloropid fly puparia. The parasitoid fly attacks the eggs carried by the female. When done, the maggots climb on the "childless" mom's back and pupate. She protects them during this period thanks to her motherly instincts.

The process of drawing a spider male genitalia for taxonomic description. ~2:30 hours in total (only the filling; the lines in the camera lucida might have taken an additional hour or so).

Eight legs to bring a little joy to your timeline (skyline?). Zoropsis spinimana, aka the “Nosferatu spider.” Isn’t she so cute? 🥹 Thank you to @wolffspider.bsky.social and your lab @evoimec.bsky.social for a warm welcome in Greifswald! Please follow them and their amazing work!

Sci-comm at its finest! @sderkarabetian.bsky.social and I just published a systematic study of arachnids in the Magic: The Gathering card game @mtgarena.com. We discuss classification and evolution of spiders across the multiverse. Check it out here: virginianaturalhistorysociety.com/wp-content/u...

All hail the spider queen, Elise! 🕷️🕸️ Can I get an ID on these please? 🤔 #leagueoflegends #riot

doi.org/10.1073/pnas... Olfaction in spiders. We found that the wall pore sensilla in spiders look similar from the outside to those of insects, but differ ultrastructurally in various ways. Independent evolution! 🧪

In November, I gave a talk for Nerd Nite Christchurch, where I described some of my adventures in Kenya and a legendary jumping spider called Evarcha culicivora (AKA The Mosquito Terminator)! Check it out here youtu.be/7EBi7FUpGaY @marsdenfund.bsky.social @royalsocietynz.bsky.social #LoveSpiders

I found a horseshoe crab ornament and wanted to share it with my friends but I had a crisis trying to figure out what discord channel to put it in.

Titiotus heberti from the mountains of Kern County CA. the large hook-like structure on the pedipalps (in the front) is called the "retrolateral tibial apophysis" (=RTA). turns out that this feature defines a large natural group of spiders Titiotus is species rich, all endemic to California

Which arachnid are you most thankful for this season? 🙏🦂🕷️

Alright arachnologists and arachnid enthusiasts, let’s get this started! Drop a comment below if you would like to be added or have people to add. Let’s make the official AAS starter pack 💪🕷️🦂🕸️ go.bsky.app/8Nb8974

My first time being part of a published article! Everything about Dolomedes in one place. I wrote the section on parental care. 🕷️ I am very grateful to all of the collaborators on this paper especially Dr. Chrissie Painting and my advisor Eileen. www.frontiersin.org/journals/ara...

Had a great time at the @arachnology.bsky.social conference in Chetumal, Mexico!

REGISTRATION OPEN FOR AAS 2024! June 24-27th, 2024 in Chetumal , Mexico Registration Payment Deadline: May 31, 2024 Abstract deadline: May 15, 2024 Student Travel Grant App Deadline: April 17, 2024 Info: americanarachnology.org/aas-meetings/a… Logo Design: @ maria.disenografico (Instagram)

Here are your Friday Scorpion Fingers. This scorp is in the genus Serradigitus, or sawfinger scorpions. They are called this not because they will saw off your finger, but for the uniform, saw-like teeth on their chelae (singular chela), which is the science-y word for their pincers. 🐙 #invertebrate

Missing them (Castianeira floridana) 🖤 🌿 🕷️

Submit your memes by 2/23! ***PRIZE*** 🕸️Custom hand-made t-shirt 🕸️2024 AAS membership including discounted conference registration (Join us in Chetumal, Quintana Roo, Mexico Jun 24-28) and electronic AND hardcopy of the Journal of Arachnology Submission form in linktree in our bio!

One more week to submit to the AAS meme contest! Submission form: forms.gle/o9EVdHEspeUa... POV you're an arachnid keeper:

Happy Valentine's Day from AAS! 🕷️🦂💕

🧪Xiphosura AKA Horseshoe crabs have been moved across the Chelicerate phylogeny several times ▶️Xiphosura was once its own class separate from arachnids due to their distinct body shape ▶️Recent molecular studies place them WITHIN Arachnida, labeling them arachnids Should we allow Xiphosura memes? 😎

🕸️AAS is coming to Bluesky with a bang by hosting a meme contest! Details of the contest can be found below🕸️ ▶️Memes MUST be submitted to Google forms in the Linktree in our bio for entry ▶️Public voting will be via Google Forms ▶️If post your meme on the web, make sure to post with #AASMemeContest