Once you suggested a funnel-web spider, I checked the field station invert list, and I found that Hololena curta has already been reported. I wonder if that is a possibility? The faculty member who did the collection and identification is currently out of the country, but I'll see if I can contact him by email.

I think it's possible. I don't have much experience with Hololena, so I can't be of much help. I hope you get a confirmation since if it is that, it will be a new species for bugguide.

Yes, possible; perhaps even probable -- Hololena curta is a common species in southern California. Looks like a juvenile.. [correction: just saw ventral view, it is immature.]

-K

...and he says that he would guess from the photo that this is a juvenile Hololena curta. He says he can't be sure without looking at the specimen, but it looks like H. curta, and that certainly is one of the commoner species at the field station. The spider was still there last week, so I'll see if I can arrange for him to look at it.

Thanks Nancy. If he's relatively certain (if ID can't be determined because it's not mature) I think it's fine if you move it there.

I didn't think I could move the images because there wasn't a guide page for Hololena curta, but I see one has been created, so here they are. Also, I just checked today, and there are a number of these little spiders on the grape plant, so I'll work with our invert person to confirm the ID.