Tachynomyia have males with the head posteriorly strongly concave and the margins there adorned with long setae. This feature is also shared with Tachyphron and Tachynoides (both genera not found in Tasmania) but can be distinguished by the presence of a digitate process of the cheek (gena) situated low to the base of each mandible. The concavity of the head and the setae fringe serve to hold regurgitate that females will feed from while being carried. Tachynomyia abdominalis is the only species known for Tasmania.
Male and female
Mid October 2015
Male and female
Late October 2013
Knocklofty Reserve, Hobart
Genus identification thanks to Graham Brown via Bowerbird
Male
Late October 2012
Knocklofty Reserve, Hobart
Note the large collection of liquid under the head.
Male
Late December 2014
Strathgordon
Early October 2017
Coningham
