........P. opacus (Fall), male. ........Photo
by M.J. Paulsen
Distribution:
Benesh, B. 1946. A systematic revision of the Holarctic genus Platycerus Geoffroy (Coleoptera: Lucanidae). Transactions of the American Entomological Society 63: 139-203. [known from Butte, Fresno, Tulare, and Yuba counties, California]
Van Dyke, E.C. 1928. Notes and descriptions of new species of Lucanidae and Cerambycidae (Coleoptera) from western North America. Pan-Pacific Entomologist 4: 105-113.