American Arachnological Society (AAS)

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Arachnology students gathered at night for collecting arachnids

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

Advanced Courses for Biologists, Researchers, Naturalists | AMNH Further your knowledge and skills with advanced courses for biologists, researchers, professionals and experienced naturalists in a stunning biodiverse setting.

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.

a pale, elegant long-legged spider, with whispy silk, under a stone

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...

A chromosome-level genome of the giant vinegaroon Mastigoproctus giganteus exhibits the signature of pre-Silurian whole genome duplication Abstract. Within the arachnids, chromosome-level genome assemblies have greatly accelerated the understanding of gene family evolution and developmental ge

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.

14 panels showing the process of a drawing from start to end; the first show only the empty lines, and the drawing becomes progressively filled and more detailed. the last panel shows the genitalia with all its features, including pointed ends, a laminate conductor and a coiled embolus.

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!

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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...

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Elise from league of legends, a spider inspired champion with a red mask and two spiders crawling on her.

Elise the spider inspired league of legends champion with a red mask and spider like legs.

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

Olfaction with legs—Spiders use wall-pore sensilla for pheromone detection | PNAS The sense of smell is a central sensory modality of most terrestrial species. However, our knowledge of olfaction is based on vertebrates and insec...

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!
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YouTube video by Nerd Nite Christchurch Nerd Nite ChCh: Travels to Kenya: An Eight-legged Adventure by Dr Spider

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

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Thank you for sharing this! I have added all three of you to the list 🕷️🕸️

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A meme of a man struggling to figure out which button to press: arachnids or “other inverts”

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.

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You’re already on it! I got you. 😉