Aporocosmus is a genus of moths in the subfamily Odontiinae of the family Crambidae. It contains only one species, Aporocosmus lamprodeta, which is found in New Guinea and Australia, where it has been recorded from Western Australia, the Northern Territory, Queensland and New South Wales. The wingspan is about 30 mm. The forewings are pale yellow with a pattern of dark-edged bands and spots. The hindwings are pale brown, darkening towards the margins.