This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.
Shawnny3 on Jan 11, 2009January 11th, 2009, 11:38 am EST
Do a quick search and you'll find that this topic has been discussed on this forum a number of times from slightly different angles. Here's one of them:
http://www.troutnut.com/topic/748
I don't mean to stunt the thread, because many may want to weigh in on this topic, I just wanted folks to be aware that there are a lot of other similar threads that might be worth digging up, especially since some very knowledgeable people who posted in previous threads are currently on hiatus.