Sigma Darner (Austroaeschna sigma)
The Sigma Darner (Austroaeschna sigma) is a dragonfly species of the family Telephlebiidae and Brachytronidae, which contains 37 species in Australia.
The identification key to the family Telephlebiidae and Brachytronidae consists of 37 couplets, 12 of which are pertinent to Austroaeschna sigma. 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.