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What kind of spider is this half dollar sized brown one with a darker brown body and a lighter brown strip down its back?

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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?

Why should this post be closed?

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1 answer

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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.

This post was sourced from https://outdoors.stackexchange.com/a/22479. It is licensed under CC BY-SA 4.0.

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