| Type | Article |
| Authors(s) | Keffer, S.L. |
| Year | 2004 |
| Title | Morphology and evolution of waterscorpion male genitalia (Heteroptera: Nepidae) |
| Volume | 29 |
| Page(s) | 142-172 |
| Published in/Publisher | Systematic Entomology |
| Type | Article |
| Authors(s) | Keffer, S.L. |
| Year | 2004 |
| Title | Morphology and evolution of waterscorpion male genitalia (Heteroptera: Nepidae) |
| Volume | 29 |
| Page(s) | 142-172 |
| Published in/Publisher | Systematic Entomology |