Genus: Hydrobius
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 1997 | 1 | 2 | 2 | 2 |
| 1992 | 1 | 1 | 1 | 1 |
| 1991 | 1 | 3 | 3 | 3 |
| 1990 | 1 | 1 | 1 | 1 |
| 1989 | 1 | 1 | 1 | 1 |
| Totalt alle år | 1 | 8 | 8 | 8 |
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 1997 | 1 | 2 | 2 | 2 |
| 1992 | 1 | 1 | 1 | 1 |
| 1991 | 1 | 3 | 3 | 3 |
| 1990 | 1 | 1 | 1 | 1 |
| 1989 | 1 | 1 | 1 | 1 |
| Totalt alle år | 1 | 8 | 8 | 8 |