Unidentified

Picture ID 119565

Picture of unidentified spider

Comments & ID Thoughts

I'm thinking this is a wolf spider but I'm not too sure.

  • Submitted by: 
    JoshuaW
  • Submitted: Aug 8, 2020
  • Photographed: Aug 8, 2020
  • Spider: Unidentified
  • Location: Cambridge, Ontario, Canada
  • Spotted Outdoors: Man-made structure (building wall, fences, etc.)
  • Found in web?: Yes
  • Attributes:
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Vonpaulus

It does look like one, but it’s not: those long spinnerets show it’s an Agelenidae. Consider also that Wolf Spiders are poor climbers. I’m not sure about the genus, though. Possibly Agelenopsis sp., a Grass Spider.

Last edited 1 month ago by Vonpaulus
Vonpaulus

Well I suppose that would be too much for a spider of that species. You’re talking about the body length, right? Legs excluded, I mean.

Last edited 1 month ago by Vonpaulus
Vonpaulus

I see. Thank you for your reply. I can’t tell whether this size is consistent or not with the species I mentioned, though, because it is the body length that matters, when it comes to identifying a spider. The leg span matters too, but the body length is a safer criterion since it’s not affected by the posture of the legs, which of course can vary a lot.

Last edited 1 month ago by Vonpaulus
Keyojimbo

pretty sure it’s a big grass spider. saw one similar yesterday. body length around 20mm. leg span easily double that. Would be nice if there’s a shot from the front to show the eye pattern. if it’s 2 top, 4 mid, 2 bottom then I’m almost certain it’s a grass spider.

All the wolf spiders I’ve seen have 2 top, 4 bottom, and 2 lateral behind the top eyes.

Last edited 1 month ago by keyojimbo
Vonpaulus

Correct, with the anterior median eyes being clearly larger than the others, as shown here:

https://bugguide.net/node/view/84423

Anyway, in this case, I think that the spinnerets may serve as a safe criterion to rule out a Wolf Spider.