Localities: Kruktjønna: 28.08.1991
| Reporter: | Fosen videregående skole |
| Site: | Kruktjønna () |
| Date: | 1991-08-28 |
| Activity: | VANDA: Bunndyr |
Observation
| Species: | Eurycercus lamellatus |
| Number: | 3 |
| Original: | Ja |
| Species: | Gerris lacustris |
| Number: | 3 |
| Original: | Ja |
| Species: | Aeshna sp. |
| Number: | 8 |
| Original: | Ja |
| Species: | Callicorixa wollastoni |
| Number: | 2 |
| Original: | Ja |
| Species: | Coenagrion sp. hastulatum gr. |
| Number: | 4 |
| Original: | Ja |
| Species: | Coenagrionidae indet. |
| Number: | 2 |
| Original: | Ja |
| Species: | Corixidae indet. |
| Number: | 1 |
| Original: | Ja |
| Species: | Gyrinus minutus |
| Number: | 1 |
| Original: | Ja |
| Species: | Gyrinus opacus |
| Number: | 2 |
| Original: | Ja |
| Species: | Hesperocorixa sahlbergi |
| Number: | 3 |
| Original: | Ja |
| Species: | Hydroporus obscurus |
| Number: | 2 |
| Original: | Ja |
| Species: | Lumbriculus variegatus |
| Number: | 1 |
| Original: | Ja |
| Species: | Polycentropus flavomaculatus |
| Number: | 1 |
| Original: | Ja |
| Species: | Pyrrhosoma nymphula |
| Number: | 2 |
| Original: | Ja |