Localities: Lauvtjønna: 24.05.1991
| Reporter: | Malvik videregående skole |
| Site: | Lauvtjønna () |
| Date: | 1991-05-24 |
| Activity: | VANDA: Bunndyr |
Observation
| Species: | Gerris lacustris |
| Number: | 6 |
| Original: | Ja |
| Species: | Halesus radiatus |
| Number: | 10 |
| Original: | Ja |
| Species: | Holocentropus dubius |
| Number: | 1 |
| Original: | Ja |
| Species: | Leptophlebia vespertina |
| Number: | 30 |
| Original: | Ja |
| Species: | Limnephilus rhombicus |
| Number: | 1 |
| Original: | Ja |
| Species: | Polycentropus sp. |
| Number: | 1 |
| Original: | Ja |