A new aquatic associated genus of Trichopezinae, Gondwanodromia gen. nov., with one new species from southern South America (G. mikae sp. nov.), six new species from eastern Australia (G. bulbosa sp. nov., G. colomatta sp. nov., G. lutea sp. nov., G. tasmanica sp. nov., G. thredbo sp. nov., G. tonnoiri sp. nov.) and four new species from New Zealand (G. elongata sp. nov., G. femorata sp. nov., G. tongariro sp. nov., G. wardi sp. nov.) are described. The following new combination is proposed for the New Zealand species Gondwanodromia mutabilis (Collin) comb. nov. and the male of this species is described for the first time. All species are illustrated, distributions mapped and the phylogenetic affinities of the new genus are discussed. A key to genera of Trichopezinae of the Southern Hemisphere and key to species of Gondwanodromia are presented.