Mesocnemis is a genus of African damselflies in the white-legged damselfly family (Platycnemididae). They are commonly known as Riverjacks.
The genus contains the following species:
Mesocnemis dupuyi Legrand, 1982 - Gambia Riverjack Mesocnemis robusta (Selys, 1886) Mesocnemis saralisa Dijkstra, 2008 Mesocnemis singularis Karsch, 1891 - Common Riverjack, Savanna Brook-damsel, Savanna Stream-damsel Mesocnemis tisi Lempert, 1992 - Liberian Riverjack
References