Lycosidae
(Wolf Spiders)

Picture ID 55167

Picture of Lycosidae (Wolf Spiders) - Male - Ventral

Comments & ID Thoughts

Underside of a spider, bit my son in the bathtub, located in South Dakota

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ItsyBitsy

Looks like a Ground Spider (Gnaphosidae). The top view is preferable for an ID.

ItsyBitsy

Looking again I think I misjudged, Gnaphosidae have distinctive spinnerets which is what I was looking at, except I think they’re just flared out on this one because it was drowing or somthing … it looks instead like a Wolf Spider (Lycosidae), compare to this one (it’s possibly the same species, but again … would need to see the top to be sure): https://bugguide.net/node/view/1111570/bgimage Either way neither family has medically significant species in them, though I know a 2 year old may have an over-reaction to any sort of bug bite (mine sure did when he was that age). Good… Read more »

ItsyBitsy

Wolf Spiders have difficluty climbing smooth surfaces, so it may have been able to get up the wall if there was a rough surface there but once it fell into the tub couldn’t get out on it’s own.

Additional Pictures

Picture of Lycosidae (Wolf Spiders) - Female - Spiderlings Enlarge Picture
Picture of Lycosidae (Wolf Spiders) - Female - Dorsal,Egg sacs Enlarge Picture
Picture of Lycosidae (Wolf Spiders) - Dorsal Enlarge Picture
Picture of Lycosidae (Wolf Spiders) - Dorsal Enlarge Picture