Localities: Tjennane: 06.09.1994
| Reporter: | Porsgrunn videregående skole |
| Site: | Tjennane () |
| Date: | 1994-09-06 |
| Activity: | VANDA: Bunndyr |
Observation
| Species: | Gerris lacustris |
| Number: | 7 |
| Original: | Ja |
| Species: | Gerridae indet. |
| Number: | 3 |
| Original: | Ja |
| Species: | Limnephilus sp. |
| Number: | 1 |
| Original: | Ja |