Austroaeschna (Austroaeschna) sigma Theischinger, 1982

Theischinger, G. & Endersby, I., 2014, Australian Dragonfly (Odonata) Larvae: Descriptive history and identification, Memoirs of Museum Victoria 72, pp. 73-120 : 86

Austroaeschna (Austroaeschna) sigma Theischinger, 1982

Theischinger (1982, 1993, 2002); Hawking & Theischinger (1999); Theischinger & Hawking (2006); Theischinger & Endersby (2009).

*Genus Austroaeschna , Subgenus Austroaeschna Selys, 1883

Only A. obscura can be distinguished from congeners on the basis of morphology. Four more species can confidently be identified by their distributions. Eungella area: A. christine ; south-eastern Queensland and New South Wales N of latitude Sydney: A. sigma ; south-eastern New South Wales south of approximately 35º30’S and Victoria except for the Grampians: A. multipunctata ; Grampians: A. ingrid . A. parvistigma is the only species in Tasmania. On the mainland it may, however, coexist in places with with A. sigma , A. multipunctata and A. ingrid . But, whereas the larvae of these three species inhabit running water often with rocky substrate, the larva of A. parvistigma is usually found only in swampy and boggy situations (Theischinger 2002, 2012; Theischinger & Endersby 2009).