Tricholepidion gertschi, the relict silverfish. Collected from decomposing redwood logs near (but not in) Richardson Grove state park. They were quite common here, as well as in decomposing redwood logs located nearby along the south fork Eel river.

Identifying features include; lack of scales, which rules out Lepismatidae, and the presence of compound eyes , which rules out Nicoletiidae.
Also the presence of ocelli (will post more pictures) rules out every other silverfish in North America. The presence of these features, as well as the location of the specimen confirm that this is indeed T. gertschi, the relict silverfish.

They live quite happily in captivity at room temperature, on a diet of oatmeal, and with some redwood frass from their natural habitat.


Micrographs taken at Humboldt State University.

Update: 11/4/17
I have never found these insects in association with carpenter ants. The person who stated this (on the Zygentoma page) is probably confusing Tricholepidion with myremecophilous Nicoletiidae.