Unknown spider, Eastern Washington state, found in forest glade. - Antrodiaetus

Moved

… Jeff Hollenbeck, 20 February, 2008 - 6:37pm

Definitely an Antrodiaetus ma

Definitely an Antrodiaetus male, not sure of the species.

… Brent E Hendrixson, 20 February, 2008 - 1:44pm

this is most probably a trapd

this is most probably a trapdoor spider. it is also a male.
the tiny little eight eyes in circular arrangement, the almost perfectly round carapace, and the visible spinnarets allow me to say this.

the trap spiders dont really need good vision as much as they need good sensory hairs since all they do is hide in their webs unless the male is out looking for a mate. the well developed spinnarets are used for the trapdoor webs they build (little holes in the ground with a covering and webbing on top

if he was wandering around he must have been looking for his mate.
all spiders are venomous, the question is the venom potent enough to hurt us?

and the answer to that question is not this guys venom. (i know Eric will kill me for saying this) i dont mean to alarm you or anything but i have read that some trapdoors spiders fangs' are so sharp they can peirce nail or bone. they might not be in north america though.

… Omar Fahmy, 30 March, 2006 - 7:19am

to be more specific.

according to, How to Know the Spiders by B.J. Kaston
this is an Antrodiaetus pacificus, suborder Orthognatha, family Antrodiaetidae. of course they have changed that around now but i am not sure what to

"the cephalothorax and legs are brown, the abdomen brownish gray. the male has three abdominal tergites, and the female onee. length of female 13mm; of male 11 mm. Alaska south to California and east to Idaho"

… Omar Fahmy, 30 March, 2006 - 8:46am

Perplexing.

I'd generally agree with Omar, except on this specimen the tergites appear to be absent. Usually they are dark, and very obvious. Could be this is an immature individual, or something in another genus altogether. Omar is correct that some of these spiders have strong fangs. Australia's funnelweb spiders in the genus Atrax are capable of piercing the fingernails and toenails of toddlers. Thankfully, our species are not dangerously venomous.

… Eric R. Eaton, 30 March, 2006 - 1:05pm

Its a mature male in the fami

Its a mature male in the family Antrodiaetidae. I've gone back and forth on this one, but the picture does show the tergites in the proper position, though they are paler than expected (possibly due to the angle of the photo).

… Dennis Haines, 18 December, 2007 - 3:10pm

A. hageni

Based on the caramel color and eastern Washington location, I would wager you have an Antrodiateus hageni. They are common in the Okanagan valley of BC. One would assume they would also be found in Okanogan Washington, Oroville, Omak, Grand Coulee, Wenatchee, Etc.

… Mitch Guilderson, 29 April, 2010 - 4:18pm