Larvae feed on the detritus inside Uromycladium galls on Acacia.
Erechthias mystacinella
Rescued from a water bowl
late December 2016 Hobart
Identification and information thanks to Peter McQuillan
Mid August 2017
Emerged from Uromycladium gall
Knocklofty Reserve, Hobart/ nipaluna
. 
Mid August 2017
Emerged from Uromycladium gall
Knocklofty Reserve, Hobart/ nipaluna
. 
Late (20th) September 2017
Emerged from Uromycladium gall
Knocklofty Reserve, Hobart/ nipaluna
This may have emerged from the gall prior to the 20th as it looks a bit worn.
. 
Late (20th) September 2017
Emerged from Uromycladium gall
Knocklofty Reserve, Hobart/ nipaluna
Knocklofty Reserve, Hobart/ nipaluna
Mid October 2021
New Town Rivulet Park, Lenah Valley
Resting on an Acacia dealbata.
References:
Bashford, R. The insect fauna inhabiting ‘Uromycladium’ (Uredinales) rust galls on silver wattle (‘Acacia Dealbata’) in Tasmania [online]. Australian Entomologist, The, Vol. 29, No. 3, Sep 2002: 81-95. Availability:<http://search.informit.com.au/documentSummary;dn=076082552062962;res=IELHSS> ISSN: 1320-6133. [cited 12 Aug 17].