Zyganisus acalanthis is a moth in the family Cossidae. It is found in Australia, where it has been recorded from southern Western Australia.
The wingspan is 42–44 mm for males., 2012: Revision of Cossinae and small Zeuzerinae from Australia (Lepidoptera: Cossidae). Zootaxa 3454: 1-62. Abstract: .
References
Natural History Museum Lepidoptera generic names catalog