Tau Emerald (Hemicordulia tau)
The Tau Emerald (Hemicordulia tau) is a dragonfly species of the family Corduliidae, which contains 12 species in Australia.
The identification key to the family Corduliidae consists of 11 couplets, 4 of which are pertinent to Hemicordulia tau. Click on the numbers on the right to display the corresponding couplets. Or click on the ALLin1 button to see all the relevant couplets together in a single, scrollable window.