Picture ID 135542

Picture of unidentified spider

Comments & ID Thoughts

Slightly better pic of this tiny crab spider. About 2mm long, and is most active morning and dusk. I took this picture under a microscope.

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  • Submitted: Mar 31, 2021
  • Photographed: Mar 31, 2021
  • Spider: Unidentified
  • Location: East Grand Rapids, Michigan, United States
  • Spotted Outdoors: Ground layer (leaf litter, dirt, grass, etc)
  • Found in web?: No
  • Attributes:
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This is most likely in the Ozyptila genus. Based off of Bug Guide, the femur 1 and tibia 1 of this spider matches the genus Ozyptila more than Xysticus.


Those are macrosetae. Spiders use them to pick up stuff like vibrations, wind, sound, etc. They also have setae on the tips of their metatarsus. If you remember in the Spiderman movie with Toby Maguire, where Peter Parker first goes through his transformation, he has those little spikes coming out of his fingers. Those setae help spiders latch onto stuff they are climbing. That’s about the extent of my knowledge, I’m not an expert on this stuff.


Love it! Great use of a Spiderman reference! Today I found a little fun factlet: spp. are triggered to release legs from their bodies in response to pain stimuli, such as excess pressure or a hornet sting. It apparently happens automatically, not as a choice.