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Redwood Spider

Redwood Spider
Brookdale, Santa Cruz County, California, USA
June 26, 2011
Size: 2"+
This is about half the size of the ones he's found in his bedroom. Near the San Lorenzo River in Brookdale. They seem to be a fairly common spider (though large and frightening to most people) in the redwood duff, or under old stairs, rotting stuff on the ground. He's really begging for an ID, more information on this. They are where he is sleeping. This little one is about 2" they get twice this size.

Images of this individual: tag all
Redwood Spider Redwood Spider Redwood Spider

Family Tengellidae and Zorocratidae were synonymized with family Zoropsidae.(1)

Moved from ID Request. If you could find a mature female or male and get the detailed epigyne or palp shots, we might be able to find someone who can ID them to species.

Now, is there an easy place for me to see what these body parts are that you need photos of?

Palps I think are the big things next to the fangs, in a male, correct? is the epigyne, the opposite end on the females?

Any suggestions on how to slow them down for better photography while not harming them? A friend used an inverted can of enddust to shoot a fly and grasshopper, but I've not found any references to what is safe to use.

I know the young man whose been catching these would be glad to catch more.

I have all those answers! (I think)
1. For Palps click here. Look under Sex Identification.

2. For Epigyne click here.

3. For the females - I'd say you should try the plastic bag trick... just seal the spider in a plastic baggie (no extra space) and then turn the spider over. It works like a charm. Getting the flash/lighting right is the major hurdle.

4. For males - I just let them run around inside a baking dish. When they provide the right angle I take the shot. I do turn the dish quite a bit.. and have a ruler on hand to measure and to poke them back down when they start to escape.

I book marked that.

Dang, I though I was safe, thinking I did not need more magnification then 1:1 or at the most 1:1.4, now I'm to get the sex photos of spiders, side views etc......I already knew 2 things.

I wasn't going to die of Boredom.
I have again learned enough to know, I had much less of an idea of the 'whole of it all'.

Looks like family Tengellidae
There are three genera possible in CA, I think. I'm not familiar enough with this family yet to say which one this belongs to, though. Other images of tengellids in the guide: They're not considered dangerously venomous to humans (at least not that anyone knows so far). They are the nocturnal wandering-type that catch their prey "on foot." If he keeps finding them indoors, he might want to check the weatherstripping around his doors and stuff and make sure it's intact?

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