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Latrodectus
(Widow Spiders)

Picture ID 8126

Picture of Latrodectus (Widow Spiders) - Dorsal,Webs

Comments & ID Thoughts

Hi again, this is the spider from the mail box. Color has somewhat decay after 1 week and RAID spider killer. Is it a better the picture for ID purposes?

3 Comments
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ItsyBitsy

Hi, this is a Widow. Given the condition it’s in I’m not sure if it’s a dark Brown Widow (L. geometricus) or a Western Black Widow (L. hesperus). Both can have striped legs like that.
https://bugguide.net/node/view/442833/bgimage
https://bugguide.net/node/view/1191698/bgimage

Also for future reference Brown Widows have distinctive spiky egg sacs:
https://bugguide.net/node/view/1143026/bgimage

Edit: Leaning Brown Widow, I’d need to spend some more time comparing the two.

ItsyBitsy

Yes, widows can have spots too … they’re usually red or orange though. Yellow sounds more like a Brown Widow.

Western Black Widow: https://bugguide.net/node/view/1279380/bgimage
Southern Black Widow: https://bugguide.net/node/view/970516
Brown Widow: https://bugguide.net/node/view/1127942/bgimage

Additional Pictures

Picture of Latrodectus spp. (Widow Spiders) Enlarge Picture
Picture of Latrodectus spp. (Widow Spiders) Enlarge Picture
Picture of Latrodectus spp. (Widow Spiders) Enlarge Picture
Picture of Latrodectus spp. (Widow Spiders) - Female - Egg sacs Enlarge Picture