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Comments & ID Thoughts
Found in my garage, alpine region of southern California. About dime-sized. Some kind of crab spider? Had a slow, methodical walk, almost robotic. Not alarmed by my presence at all. Also moved a step or two sideways here and there.
- Submitted by:
- Submitted: Dec 9, 2024
- Photographed: Dec 8, 2024
- Spider: Thomisidae (Crab Spiders)
- Maturity:Adult
- Location: California, United States
- Spotted Indoors: Garage or shed
- Found in web?: No
- Attributes:
Help identify this spider
Nov 8, 2025
Nov 8, 2025
Enid, 
Yes, she’s a Crab Spider, possibly a Bark Crab Spider. They don’t walk quickly, they don’t need to. They hunt by staying still in an environment that their body matches and waiting for a bug to come near them. The colder weather makes arthropods slower too. They actually do walk sideways like real crabs. 🙂 https://phys.org/news/2024-05-discovery-ancestors-scorpions-spiders-horseshoe.html The link is to a new discovery of what may have been a common ancestor of crabs and spiders. I suspect that crab spiders can’t see us, we’re probably too large for their visual field. I think that’s why they ignore us unless you… Read more »
https://phys.org/news/2024-05-discovery-ancestors-scorpions-spiders-horseshoe.html
Another try at that link.