What's That Bug? does not endorse extermination

Subject: Looking for identification
Location: Denver, Colorado, in a basement, near a window sill
August 23, 2016 9:25 pm
Hello! I found a spider about 3/4 inch in diameter. It is all black, with a dorsal that is covered in tiny white polka dots. The dorsal is very lumpy. I’ve never seen anything like it and can’t seem to find anything that resembles it online. Unfortunately, I didn’t get a great look at its eyes as I was afraid to get too close since I don’t know what it is
Signature: Michaelanne Stuhr

Wolf Spider with Spiderlings

Wolf Spider with Spiderlings

Dear Michaelanne,
The only spiders that care for young in this manner, by carrying them about riding on the abdomen, are harmless Wolf Spiders.  A large Wolf Spider might bite if threatened, and approaching a female with a brood would constitute a threat to her young, but the bite is not considered serious to humans.

What's That Bug? does not endorse extermination
Location: Denver, Colorado

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