| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Hydroporus | striola | 13 |
| 2 | Hydroporus | niger | 11 |
| 3 | Hydroporus | gossei | 10 |
| 4 | Hydroporus | tristis | 9 |
| 5 | Hydroporus | columbianus | 8 |
| 6 | Hydroporus | tenebrosus | 8 |
| 7 | Hydroporus | notabilis | 8 |
| 8 | Hydroporus | badiellus | 7 |
| 9 | Hydroporus | signatus | 7 |
| 10 | Hydroporus | melsheimeri | 7 |
| 11 | Hydroporus | dentellus | 6 |
| 12 | Hydroporus | rectus | 6 |
| 13 | Hydroporus | appalachius | 6 |
| 14 | Hydroporus | longiusculus | 4 |
| 15 | Hydroporus | subpubescens | 4 |
| 16 | Hydroporus | fortis | 2 |
| 17 | Hydroporus | larsoni | 2 |
| 18 | Hydroporus | morio | 2 |
| 19 | Hydroporus | mannerheimi | 2 |
| 20 | Hydroporus | puberulus | 1 |
| 21 | Hydroporus | rufilabris | 1 |
| 22 | Hydroporus | angustatus | 1 |
| 23 | Hydroporus | occidentalis | 1 |
| 24 | Hydroporus | pervicinus | 1 |
| 25 | Hydroporus | lapponum | 1 |
| 26 | Hydroporus | rufinasus | 1 |
| 27 | Hydroporus | despectus | 1 |
| 28 | Hydroporus | fuscipennis | 1 |
| 29 | Hydroporus | tartaricus | 1 |
| 30 | Hydroporus | planus | 1 |