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Steatoda nobilis
(Noble False Widow)

Picture ID 198623

Picture of Steatoda nobilis (Noble False Widow) - Male

Comments & ID Thoughts

Might be a Noble False Widow? Is it common in San Francisco?

Is this a young spider since the body is small?

Is it venomous?

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TangledWeb

You got it! Your photo came out great too. It’s probably small because it’s a male. Technically male spiders are normal-sized and the females exhibit sexually dimorphic gigantism. Female spider have a longer growth period, more molts. Their abdomens are also stretchy for egg development and larger meals. Males proportionately have longer legs, which they can use in self protection to restrain a hungry female during mating. In some species the adult males look like hatchling babies next-to adult females. It’s cute and funny to watch the males timidly court the females. I think this male is fairly young, but… Read more »

Trailside

file:///C:/Users/Christine%20Vigue/Dropbox/My%20PC%20(DESKTOP-OMHPD1M)/Desktop/outdoor%20shower%20spider.jpg

Additional Pictures

Picture of Steatoda nobilis (Noble False Widow) Enlarge Picture
Picture of Steatoda nobilis (Noble False Widow) Enlarge Picture
Picture of Steatoda nobilis (Noble False Widow) - Dorsal Enlarge Picture
Picture of Steatoda nobilis (Noble False Widow) Enlarge Picture