Localities: Kverndammen: 30.08.1990
| Reporter: | Porsgrunn videregående skole |
| Site: | Kverndammen () |
| Date: | 1990-08-30 |
| Activity: | VANDA: Bunndyr |
Observation
| Species: | Haemopis sanguisuga |
| Number: | 1 |
| Original: | Ja |
| Species: | Erpobdella octoculata |
| Number: | 1 |
| Original: | Ja |
| Species: | Notonecta glauca |
| Number: | 21 |
| Original: | Ja |
| Species: | Nepa cinerea |
| Number: | 1 |
| Original: | Ja |
| Species: | Aeshna sp. |
| Number: | 7 |
| Original: | Ja |
| Species: | Hyphydrus ovatus |
| Number: | 10 |
| Original: | Ja |
| Species: | Ilybius fuliginosus |
| Number: | 2 |
| Original: | Ja |
| Species: | Rhantus exsoletus |
| Number: | 1 |
| Original: | Ja |