: Bosmina longispina.

With its characteristic look Bosmina longispina is the most common cladoceran in Norway. In number, it may dominate both in the pelagial as well as in the littoral. The frequency decrease slightly above 1000 m a.s.l., and it occurs with lower frequency in ditches and small ponds.

Bosmina longispina Leydig
Creative Commons Attribution | Bjørn Walseng | Norsk institutt for naturforskning
Kart. Utbredelse i Norge.