Synonyms and other taxonomic changes
Ceuthophilus californianus Scudder, 1862. Type locality: San Francisco, California
Relatively plain in coloring. Large rounded head.
Distinction from related (more southern) C. hesperus is difficult where they overlap distributions (approximately in Los Angeles County). Male external genitalia differ in shape, but females are basically identical.
California; reported from Sonoma to Los Angeles Counties.