| | | Kind of type | Full locality |
| | | [not recorded as a type] | Northwestern U.S.A., Oregon, Josephine County: Grants Pass |
| | | [not recorded as a type] | Southwestern U.S.A., California, Glenn County: Plaskett Meadows |
| | | [not recorded as a type] | Southwestern U.S.A., California: Covelo |
| | | [not recorded as a type] | Southwestern U.S.A., California: Anguin |
| | | [not recorded as a type] | Southwestern U.S.A., California: O'Brien |
| | | [not recorded as a type] | Southwestern U.S.A., California: Santa Rosa |
| | | [not recorded as a type] | Southwestern U.S.A., California: Red Bluff |
| | | holotype of species Idionotus siskiyou Hebard, 1934 | Southwestern U.S.A., California, Siskiyou County: Thrall |