Abstract

The genus Chrysops from the Australasian and Oriental regions is revised. Two new species are described: Chrysops fuscomarginalis, sp. nov. and C. srilankensis, sp. nov. The status of two species is revised: C. terminalis, stat. rev. is resurrected from questionable synonymy with C. dispar, and C. cinctus, stat rev. is resurrected from synonymy with C. signifer. Fifteen Chrysops names are placed in synonymy for the first time or placed as synonyms of species with which they were not previously associated: C. atrinus syn. of C. silvifacies, syn. nov.; C. australis papuensis syn. of C. australis, syn. nov.; C. flavocallus syn. of C. flavescens, syn. nov.; C. impar syn. of C. translucens, syn. nov.; C. indianus thailandensis syn. of C. indianus, syn. nov.; C. intercalatus syn. of C. pettigrewi, syn. nov.; C. paradesignatus syn. of C. designatus, syn. nov.; C. philipi syn. of C. alter, syn. nov.; C. semicirculus syn. of C. terminalis, syn. nov.; C. silvifacies yunnanensis syn. of C. silvifacies, syn. nov.; C. stekhoveni syn. of C. fixissimus, syn. nov.; C. subchusanensis syn. of C. chusanensis, syn. nov.; C. unizona syn. of C. fixissimus, syn. nov.; C. vietnamensis syn. of C. flaviscutellus, syn. nov.; and C. zhamensis syn. of C. pettigrewi, syn. nov. An alphabetical list of Chrysops names for the Oriental and Australasian regions is given, as is a key to species and descriptions and notes for all valid taxa. A brief discussion of the biology and economic importance is provided as well as a discussion of the distribution patterns of Oriental and Australasian Tabanidae and the northern and western limits of the Oriental region, based on distribution of Tabanidae.