A guy comes up to the desk and wants to know if I can find him a picture of a brown recluse spider. He says he wants to make sure the spiders in his daughter's treehouse aren't dangerous...and then pulls out a jar with 3 spiders in it! Luckily, I kind of like spiders and am not one of those shrieky people.
We decide, with the help of this useful UC Riverside website, that they aren't recluses, and with the help of the GENIUS What's That Bug site, that they are probably Jewelled Araneus orb weavers. Cool.
It turns out they aren't especially dangerous, but he still says he's going to clear them out--"It's my treehouse, not theirs!"