| Type | Article |
| Authors(s) | Usui, T. |
| Year | 2010 |
| Title | New record of the water measurer Hydrometra gracilenta (Heteroptera, Hydrometridae) from Japan |
| Volume | 16 |
| Page(s) | 377-378 |
| Published in/Publisher | Japanese Journal of Systematic Entomology |
| Type | Article |
| Authors(s) | Usui, T. |
| Year | 2010 |
| Title | New record of the water measurer Hydrometra gracilenta (Heteroptera, Hydrometridae) from Japan |
| Volume | 16 |
| Page(s) | 377-378 |
| Published in/Publisher | Japanese Journal of Systematic Entomology |