Help identifying tiny spider!

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georgiekat Walcott, IA Aug 02, 2022

Hello! I've just caught a REALLY tiny black/dark brown and white spider. I'm 99% sure it's a baby jumping spider, but I'm not sure what kind it is. It looks cute, fuzzy, and harmless, but I want to make sure. It's like the size of the tip of a pencil. I can't really get a great picture since it's so small, but here. I found it in Iowa, by the way, chilling on a wall. I'm hoping it'll get bigger, so if anyone can tell me how much bigger it might get, that'd be great!

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Flapdoodle Minot, ND Aug 02, 2022

Did it actually appear to jump at any time? If not, it might be a running crab spider (Philodromidae)

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georgiekat Walcott, IA Aug 02, 2022

Quote from Flapdoodle :
Did it actually appear to jump at any time? If not, it might be a running crab spider (Philodromidae)

It seemed to jump away from me using its following thread when I was attempting to catch it. I'm looking at the running crab spider and they do seem to look similar, just lighter in color than this one, although I think the spider I caught has shorter legs than what I'm seeing on the crab spiders. I wish I could look at its pedipalps so I could see if they're characteristic of a jumping spider, but he's just too tiny.


This message was edited Aug 2, 2022 2:11 PM

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Flapdoodle Minot, ND Aug 02, 2022

In running crab spiders, the second pair of legs is always noticeably longer than the first pair. Also, some male philodromids can be quite dark, almost black.

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