Most species of the Tribus Rhyssonotini occur in Australia. Rhyssonotus includes winged and flightless species and most inhabit montane wet forests. A number of species (e.g., Rhyssonotus laticeps, R. politus) have relatively restricted or localized distributions. Cacostomus is distributed from North Queensland to northern New South Wales and is most closely related to the South American genus Casignetus. Both genera are placed within the Gondwanan tribe Casignetini.  » »   Chiasognathini