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Any guesses?

Millbrae, CA

Just saw this guy this afternoon. It's probably .5-.7 in. long with a furry exterior. Backside is reddish-rust in color as you can see from the picture. I checked, and it definitely isn't a black widow from other photos I've seen. Any help would be appreciated. Thanks.

Thumbnail by sacamano
San Francisco, CA

May be Johnson's jumping spider - a harmless non-biting sp.

Minot, ND

Ummmm - They are capable of biting, but the bite is not dangerous to humans...

San Francisco, CA

Of course, it is possible for a jumping spider to bite, but have you ever heard of a case where one bit a human?

What do you think the spider is?

I have "tamed" jumping spiders by feeding them when I feed my other animals. Very smart little beasts.

Minot, ND

From -
"These big Phidippus are pretty inoffensive as a rule - I got bit by an audax once and had my thumb swell up some, but that's more a measure of my allergy than of the general "venomosity" of the spider. Most people would have less reaction to it than to a wasp sting."

From -
"When threatened, the redbacked jumping spider can inflict a painful bite in self-defense, but with no serious medical consequences."

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