I found this spider yesterday running across a sidewalk next to a canal,

it was bigger than a quarter and I think it was carrying an egg sack.

Does anybody know what kind of spider this is?

  • 3
    the body kind of reminds me of a wolf spider, but that depends on where you live Commented Jun 25, 2019 at 15:06
  • Does look a lot like a wolf spider and they can get pretty big, be curious to see if someone can identify it for certain.
    – Nate W
    Commented Jun 25, 2019 at 19:45

1 Answer 1


Definitely a wolf spider (i.e., family Lycosidae). Possibly Hogna frondicola or some closely related species.

enter image description here

Source: Spiderid.com

The white ball is an egg sac. From Wikipedia:

wolf spiders carry their egg sacs by attaching them to their spinnerets.

You can see similar pictures to your of wolf spiders carrying egg sacs here and here.

enter image description here

Source: Twitter

Spiderid.com suggests this species has been spotted in Colorado previously:

Hogna frondicola has also been sighted in the following states: Colorado, Maine, Montana.

  • 2
    Interesting that the pic in the original post and in this answer from @theforestecologist both show what seems to be a 7 legged spider... Commented Jun 28, 2019 at 17:51

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