Austroleria truncata is very similar in external characters to A. extensa, thus the flies here are not placed confidently. The former species is said to have a narrow well defined middle thoracic stripe, where this is usually wider and diffuse to obsolete in the latter species. Both species have the dark marks along the wing anterior and posterior crossveins, but usually A. extensa differs by the addition of much lighter marks near the apex of R2+3, R4+5, and M vein. The latter character is described as “usually obsolete” in A. truncata. Bodylength range from 3.3 to 5.2mm.
Mid January 2021