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Species Ectopsocus californicus

Outer Barklouse - Ectopsocus californicus Immatures - Ectopsocus californicus Psocid - Ectopsocus californicus Perhaps some kind of fly? - Ectopsocus californicus - female Ectopsocus californicus - male Barklouse - Ectopsocus californicus Psocid from Quercus virginiana - Ectopsocus californicus - female Psocodea - Ectopsocus californicus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Psocodea (Barklice, Booklice, and Parasitic Lice)
Suborder Psocomorpha
Infraorder Homilopsocidea
Family Ectopsocidae (Outer Barklice)
Genus Ectopsocus
Species californicus (Ectopsocus californicus)
Explanation of Names
Ectopsocus californicus (Banks 1903)
Identification
The very distinct dark spots on the wing and the dark postclypeus are diagnostic. (E.L. Mockford, pers. comm. to =v=)

But note comment on briggsi info. page: "E. briggsi and E. californicus are difficult to distinguish except on a slide even when you have them on hand, and photos are much more difficult. Apparently now, E. briggsi has become established in spots along the east coast, so that both species occur now on both coasts. Males tend to be somewhat variable in color. -E.L. Mockford, pers. comm. to =v= 31.v.2013".
Internet References
Natural History of Orange County, California – images of live nymphs & adults