Philodromidae
(Running Crab Spiders)

Picture ID 54842

Comments & ID Thoughts

Thinking its either a black house spider or a wolf spider but not sure

Submitted by:
nickarnold98
Submitted: Mar 20, 2019
Photographed: Mar 19, 2019
Spider: Philodromidae (Running Crab Spiders)
Location: Kaukauna, Wisconsin, United States
Spotted Indoors: Other
Found in web?: No
Attributes: Dorsal

4 Comments

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CalumEwing

March 20, 2019 8:25 am

Neither. It is a Crab Spider in the family Thomisidae.

ItsyBitsy

Moderator

March 20, 2019 10:49 am

Hi, this is a Running Crab Spider (Philodromidae).

CalumEwing

Reply to ItsyBitsy

March 20, 2019 12:16 pm

That was my other choice, but thought legs I and II looked a bit prograde. Hard to be sure with the somewhat blurry image.

ItsyBitsy

Moderator

Reply to CalumEwing

March 20, 2019 5:05 pm

I’m also looking at the shape of the median carapace stripe, eye placement, shape of abdomen, thickness and length of legs, and trying to take everything into consideration compared to all the North American genera of Thomisidae I’m familiar with, I think they can all be ruled out one way or another. Most of the ones that have this sort of coloration have stockier legs, or ones that are shaped more like this have legs III and IV much shorter, or the the carapace stripe/shape is too different.