About Calliphora stygia (Fabricius, 1781)
Calliphora stygia has a brassy abdomen covered in dense, tessellate golden dusting. The underside of its body, along with the femora and tibiae of its legs, is yellow. Males of this species are holoptic: their eyes cover most of the head and almost meet at the dorsal side. Females are dichoptic, with eyes that are separated from one another. This species is similar in appearance to C. albifrontalis, another Australian Calliphora species. The two species differ in distribution: C. albifrontalis occurs in Western Australia, while C. stygia occurs in eastern Australia. They also differ in physical traits: the upper third of the fore femora is orange in C. stygia, but darkened in C. albifrontalis. For male individuals, the minimum frons width is less than the width of the anterior ocellus in C. stygia, while it is greater than the anterior ocellus width in C. albifrontalis.
