: Alona rustica.

Alona rustica has a deep brownish yellow colour and postabdomen has a curved posterior corner covered with relatively long and coarse teeth at the dorsal edge. It is associated with a sphagnum type substrate and is known as an indicator of acid lakes.

Alona rustica Scott
Creative Commons Attribution | Bjørn Walseng | Norsk institutt for naturforskning
Kart. Utbredelse i Norge.