| | | Kind of type | Full locality |
| | | unspecified primary type of synonym Ceuthophilus castaneus Thomas, 1872 | Southwestern U.S.A., California |
| | | unspecified primary type of synonym Ceuthophilus denticulatus Scudder & Wheeler, 1896 | Southwestern U.S.A., California: Santa Barbara |
| | | [not recorded as a type] | Southwestern U.S.A., California: Stanford University |
| | | unspecified primary type of synonym Hemiudeopsylla platyceps Saussure & Pictet, 1897 | Southwestern U.S.A., California: Sausalito |
| | | holotype of species Ceuthophilus (Hemiudeopsylla) californianus Scudder, 1862 | Southwestern U.S.A., California: San Fransico |
| | | holotype of synonym Phrixocnemis obesus Caudell, 1916 | Southwestern U.S.A., California, Alameda County |