Austroaeschna sigma is a species of large dragonfly in the family Aeshnidae,[3]
known as the sigma darner.[4] It inhabits the upper reaches of small mountain streams in New South Wales and south-eastern Queensland, Australia.[5]
Austroaeschna sigma is a very dark dragonfly with pale markings. It appears similar to the multi-spotted darner, Austroaeschna multipunctata,[4] which inhabits mountain streams in southern New South Wales and Victoria.[5]
^Theischinger, Gunther (1982). "A revision of the Australian genera Austroaeschna Selys and Notoaeschna Tillyard (Odonata: Aeshnidae: Brachytroninae)". Australian Journal of Zoology Supplementary Series. 30 (87): 1–67 [21]. doi:10.1071/AJZS087.
^ abTheischinger, Günther; Hawking, John (2006). The Complete Field Guide to Dragonflies of Australia. Collingwood, Victoria, Australia: CSIRO Publishing. p. 118. ISBN978-0-64309-073-6.
^ abTheischinger, Gunther; Endersby, Ian (2009). Identification Guide to the Australian Odonata. Department of Environment, Climate Change and Water NSW. pp. 196–197. ISBN978-1-74232-475-3.