Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
28988
| CA | Imperial | Salton Sea | 1976 |
18100204
| Salton Sea | established |
279002
| CA | Orange | Flood control channel, Westminster. | 1968 |
18070201
| Seal Beach | established |
291469
| CA | Orange | Flood control channel, Westminster. | 1970 |
18070201
| Seal Beach | established |
28182
| CA | Orange | Orange County | 1984 |
18070000
| Southern California Coastal | collected |
139688
| CA | Riverside | Avenue 82 drainage ditch, between state route 86 and the Salton Sea, ~6.4 km east of Oasis | 1969 |
18100204
| Salton Sea | extirpated |
291458
| CA | Riverside | Avenue 82 drainage ditch, between state route 86 and the Salton Sea, ~6.4 km east of Oasis | 1970 |
18100204
| Salton Sea | extirpated |
28183
| CA | Riverside | Riverside County, California drainage | 1984 |
| California | collected |
1730214
| CA | San Diego | [No locality description provided; coordinates obscured by collector] | 2023 |
18070303
| San Luis Rey-Escondido | |