Song, HojunMuschett, Giselle R.Woller, Derek A.Slatyer, RachelTatarnic, Nikolai J.Umbers, Kate D.L.2023-08-231175-5326http://hdl.handle.net/1885/296806The Australian skyhopper genus Kosciuscola Sjstedt consists of brachypterous species that inhabit the Australian alpine and subalpine region. The genus used to include 5 species and 1 subspecies, but according to a recent phylogenomic study, there could be as many as 14 species in the genus, that are genetically and geographically isolated from each other. This study represents the first step in describing and documenting the diversity of this interesting genus. In this study, we redefine the type species K. tristis, and elevate its subspecies K. tristis restrictus as a valid species on the basis of distinct morphological traits, geographical isolation, and phylogenomic evidence.This project was funded through a grant from Australian Biological Resources Study Grant 9201001831: “Diversity and evolution of Australian alpine grasshoppers (Orthoptera: Acrididae: Oxyinae: Praxi-bulini) and a grant from the Hermon Slade Foundation, HSF 13-9: Speciation in the mountains: phylogenomics of the alpine grasshopper genus Kosciuscola. HS was supported by the United State Department of Agriculture (Hatch Grant TEx0-1-6584). The specimens were collected under the following permits: NSW National Parks and Wildlife Permit SL100763, DEPI Victoria Permit 10006742.application/pdfen-AU© 2021 Magnolia PressgrasshoppertaxonomyAustralian alpineconservation202110.11646/zootaxa.5071.1.62022-07-24