The tribe Cremnorrhinini, subtribe Cremnorrhinina, is recognized for the first time as occurring in Australia. Existing collections allow for the description of the following 19 new genera within which 82 new species of the group are placed: Adunatiphylus, Asterophylus, Austroplagiognathus, Bifidostylus, Dicyphylus, Eremotylus, Grandivesica, Gyrophallus, Halophylus, Lepidophylus, Maculiphylus, Monospiniphallus, Myoporophylus, Myrtophylus, Omnivoriphylus, Proteophylus, Pulvillophylus, Spinivesica, and Telophylus. Documentation is provided in the form of a subtribal diagnosis, key to genera, diagnoses and descriptions of all genera and species, color habitus images of males (and females where available) of all species, distributional maps, illustrations of male genitalic structures, images of the endosoma of all species and female genitalic structures in representative species, and scanning electron micrographs of representative morphology within the group based on a sample of nine genera. Host-plant information is provided for most species, along with representative images of hosts and habitats. Available data show that a preponderance of species are associated with the genus Eremophila (Scrophulariaceae), but with additional lineages associated with the plant groups Asteraceae, Chenopodiaceae (Amaranthaceae), Myrtaceae, and Proteaceae, among others in much smaller numbers.