| | | Kind of type | Full locality |
| | | syntype of species Lactista gibbosus Saussure, 1884 | Southwestern U.S.A., California |
| | | holotype of synonym Arphia hesperophila Rehn, 1902 | Southwestern U.S.A., California, San Diego County |
| | | [not recorded as a type] | Mexico Northwest, Sinaloa: Mazatlán |
| | | [not recorded as a type] | Mexico Northwest, Sinaloa: Mazatlán |
| | | holotype of synonym Lactista oslari Caudell, 1905 | Southwestern U.S.A., Arizona, Santa Cruz County: Nogales |
| | | [not recorded as a type] | Mexico Northeast, Tamaulipas |