Species: Eressa angustipenna
Common names: Black-headed Wasp Moth
This moth is common in the Brisbane area. Interestingly, many references show photos of this moth taken when mating (as here). Characteristically the rear wings are much shorter than the fore wings. The moth’s colouration and behaviour mimics a wasp as a defence against predators. I couldn’t find any specific information about the caterpillars but if they are like other members of the Ctenuchinae family they are probably covered in uniform dark hairs.