Common riverjack

Introduction: Common Riverjacks (Mesocnemis singularis) inhabit fast-flowing sections of streams and rivers, the adult preferring unshaded stretches of water. Singularis is a Latin word for 'remarkable, unusual, singular' referring to the position of the arculus vein that lies between the 2 antenodal veins in the wings.

Distribution: Epupa Falls, Kunene River region, Rundu, Kavango River, Chobe and Zambezi River systems.

Colouration: The body has a pale blue coating. The underside of the eyes are green.

Breeding: Females lay their eggs in driftwood and living woody plant material.

Flight season: November to April.

Max size: 35mm.

Conservation: Not threatened.