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Comments & ID Thoughts
Guess is either young black widow or false widow. Ton of flase widows in our house but those usually don't have the white stripe on the bottom which usually turns red as black widows age. However black widows young have light or white spiral patterns on their backside that merge and become dark black as they age, this looked spotted more like false widow. Welcome your feedback. Regardless I released it outside.
- Submitted by:
- Submitted: Aug 1, 2025
- Photographed: Aug 1, 2025
- Spider: Theridiidae (Cobweb Weavers)
- Location: Brentwood, California, United States
- Spotted Indoors: Sink or bathtub
- Found in web?: Yes
- Attributes:
Help identify this spider
Sep 1, 2025
Sep 1, 2025
Pennsville, 
One of the most common False Widows in California is the introduced species Steatoda nobilis https://bugguide.net/node/view/697702/data Brown Widows, Latrodectus geometricus, were also introduced to California. They have a wide orange marking on the underside. It might start out pale. The egg sacs are spiky white balls that look very different from false widow and black widow egg sacs. Another option is genus Parasteatoda, another group of false widow/ house spiders. They’re hard to describe, kinda blotchy. There are other spiders in the same family too. My best guess is young Brown Widow. I appreciate your observations 🙂 I was just… Read more »