Localities: Røyvannet: 10.09.1993
| Reporter: | Skien videregående skole/Avd Brekkeby |
| Site: | Røyvannet () |
| Date: | 1993-09-10 |
| Activity: | VANDA: Bunndyr |
Observation
| Species: | Calopteryx virgo (Beautiful Demoiselle) |
| Number: | 5 |
| Original: | Ja |
| Species: | Gerris lacustris |
| Number: | 8 |
| Original: | Ja |
| Species: | Gyraulus acronicus |
| Number: | 2 |
| Original: | Ja |
| Species: | Baetis niger |
| Number: | 2 |
| Original: | Ja |
| Species: | Baetis rhodani |
| Number: | 2 |
| Original: | Ja |
| Species: | Baetis sp. |
| Number: | 1 |
| Original: | Ja |
| Species: | Centroptilum luteolum |
| Number: | 1 |
| Original: | Ja |
| Species: | Corixidae indet. |
| Number: | 2 |
| Original: | Ja |
| Species: | Cyrnus trimaculatus |
| Number: | 24 |
| Original: | Ja |
| Species: | Diura nanseni |
| Number: | 13 |
| Original: | Ja |
| Species: | Gerridae indet. |
| Number: | 4 |
| Original: | Ja |
| Species: | Heptagenia fuscogrisea |
| Number: | 3 |
| Original: | Ja |
| Species: | Heptagenia sulphurea |
| Number: | 17 |
| Original: | Ja |
| Species: | Hydropsyche pellucidula |
| Number: | 26 |
| Original: | Ja |
| Species: | Leptophlebia vespertina |
| Number: | 2 |
| Original: | Ja |
| Species: | Leuctra fusca |
| Number: | 4 |
| Original: | Ja |
| Species: | Limnephilus sp. |
| Number: | 4 |
| Original: | Ja |
| Species: | Nemoura avicularis |
| Number: | 4 |
| Original: | Ja |
| Species: | Onychogomphus forcipatus |
| Number: | 1 |
| Original: | Ja |
| Species: | Polycentropus irroratus |
| Number: | 2 |
| Original: | Ja |
| Species: | Pyrrhosoma nymphula |
| Number: | 1 |
| Original: | Ja |
| Species: | Rhyacophila nubila |
| Number: | 1 |
| Original: | Ja |