Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1334598
| MD | Charles | Potomac River at Indianhead | 1976 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |
1334603
| MD | Prince George's | Potomac River at Fort Washington | 1976 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |
153343
| VA | Fairfax | Occoquan River | 1994 |
02070010
| Middle Potomac-Anacostia-Occoquan | collected |
153344
| VA | Fairfax | Potomac River | 1994 |
02070010
| Middle Potomac-Anacostia-Occoquan | collected |