| Common Name | County | Date | Observer(s) | Number | Comments | Record Type |
| 1 Unicorn Clubtail [Arigomphus villosipes] | Washington | 1993-06-06 | R. Duncan Cuyler | 1 | sex=MALE, city=Plymouth, directions=NE on Rt. 45, habitat=Conaby Creek, source=INTERNATIONAL ODONATA RESEARCH INSTITUTE-FSCA | Collect |
| 2 Unicorn Clubtail [Arigomphus villosipes] | Washington | 1989-06-19 | R. Duncan Cuyler | 8 | Male=4, city=Plymouth, directions=NE on Rt. 45, habitat=Conaby Creek, source=INTERNATIONAL ODONATA RESEARCH INSTITUTE-FSCA | Collect |
| 3 Unicorn Clubtail [Arigomphus villosipes] | Washington | 1989-06-19 | R. Duncan Cuyler | 2 | Male=2, city=Plymouth, directions=NE on Rt. 45, habitat=Roanoke River, source=R DUNCAN CUYLER COLLECTION-FSCA | Collect |
| 4 Unicorn Clubtail [Arigomphus villosipes] | Washington | 1975-06-18 | R. Duncan Cuyler | 1 | sex=MALE, city=Plymouth, directions=NE on Rt. 45, habitat=Conaby Creek, source=R DUNCAN CUYLER COLLECTION-FSCA | Collect |