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Unidentified

Picture ID 133162

Picture of unidentified spider

Comments & ID Thoughts

At first glance from a distance, it looked like a widow, and was in a tangled (cob) web in a tote corner of my home.

I believe it is actually a triangulate weaver.

  • Submitted by: 
    eekitsablackwidow
  • Submitted: Dec 21, 2020
  • Photographed: Dec 21, 2020
  • Spider: Unidentified
  • Location: Dubuque, Iowa, United States
  • Spotted Indoors: Other
  • Found in web?: Yes
  • Attributes:
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TangledWeb

You got it! Steatoda triangulosa, a Triangulate Cobweaver. They are in the same family, Theridiidae, as Black Widows. They other good news is that it is harmless to you, but Steatoda spp. spiders have venom that is quite deadly to insects and other spiders. At least one species in genus Steatoda, S. grossa, can kill Black Widows and Brown Recluses. They’ve been known to eat ticks too. 🙂 I let Steatoda spiders live in my house to kill mosquitoes, fruit flies, and house flies. They are the most effective indoor spider for that where I live. They patrol the exterior… Read more »

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