Review of North American species of the genus Onychiurus ... with a description of four new species from cavesBy R. J. Pomorski, M. Furgoł, and K. Christiansen
Annals of the Entomological Society of America, Vol. 102, No. 6, pp. 1037–1049, 2009
R. J. Pomorski, M. Furgol, and K. Christiansen, Review of North American species of the genus Onychiurus
(Collembola: Onychiuridae), with a description of four new species from caves, Annals of the Entomological Society of America
(6), pp. 1037–1049, 2009
The Cave Fauna of CaliforniaBy W.R. Elliott, J.R. Reddell, D.C. Rudolph, G.O. Graening, T.S. Briggs, D. Ubick, R.L. Aalbu, J. Krejca, S.J. Taylor
Proceedings of the California Academy of Sciences (Series 4) Volume 64, Supplement 1, 2017
Hidden biodiversity is revealed in this study of California's subterranean fauna, which contains distinctive elements that differentiate it from other North American regions. Since 1975, the rate of discovery of new species has accelerated with funded projects in most of the important cave areas of the state, including our own studies. Here we compile all available biological records for subterranean sites in California dating back to 1840.
California's karst is primarily comprised of small outcrops of marble or limestone with thousands of caves. Additionally, lava and ash flows, tens of thousands of mines, hundreds of sea caves on the mainland coast and islands, and extensive groundwater systems provide habitat for subterranean life.
Field Guide to California Insects (2nd Ed.)By Kip Will, Joyce Gross, Daniel Rubinoff, Jerry A. Powell
University of California Press, 2020
Amazon summary page here
This is a thoroughly revised & updated version of the classic "California Insects" by Jerry A. Powell & Charles L. Hogue, originally published by UC Press in 1979.
Beyond updated names, additional taxa, and new information...a highlight of the book is the more than 700 illustrative photos...the vast majority exquisitely taken by BugGuide editor Joyce Gross (who besides curating the photos and overseeing their layout, contributed in many
other ways large & small).