I think this is one of Olga Bekreeva's critters; like the cats it is 3d printed and very light. You can look at it (and order it) here, at http://pets.evethecat.com/spiders/ . Be sure to see the pug and the rabbit prototype, too--they are so cute!
Thanks to Cat, I have my own spider. It's not posable, but since the spider does not need period dress, this one is fine being just a flocked plastic spider.