: Thermocyclops crassus.

Thermocyclops crassus is a small copepod having a powerful appearance. It may have been overlooked because it co-occur with Mesocyclops leuckarti and T. oithonoides which are much more common. All records are from lakes southeast of Oslo.

Thermocyclops crassus Fisch.
Creative Commons Attribution | Bjørn Walseng | Norsk institutt for naturforskning
Kart. Utbredelse i Norge.