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