Zygonyx

Family Libelullidae

Zygonyx iris 

Selys 1869

Elevation 180-800m

Abdomen Length 39mm

The Iris Cascader needs fast-moving water and loves waterfalls. It breeds in the fast currents and larvae develop clinging to the stones in the fast-moving water. Rare to find one at rest as in the above photo as they usually cruise over their territory. There are several sub-species listed that result in wider distribution but mostly it is found on mountain streams across SE Asia and in Thailand and Vietnam.

Male