Onychothemis testacea,[2] the stellate river hawk,[3] or riverhawker,[4] is a species of dragonfly in the family Libellulidae.

[1][5] It is a medium sized dragonfly with bottle-green eyes.

Segment 3 has its base dorsally and sub-dorsally narrow yellow and a stellate spot on mid-dorsum.

This is a very fast flying dragonfly of forested streams.

Males usually perch on dry twigs and other similar vantage points over streams and aggressively chase other dragonflies entering their territory.