The Tabanidae (Diptera) of New Caledonia.

The Tabanidae of New Caledonia, the Isle of Pines, and the Loyalty Islands are reviewed. Sixteen species in 4 genera are described as new: Chasmia brunnea n. sp., Ch. maculata n. sp., Ch. neocaledonica n. sp. Cydistomyia (C.) atrata n. sp., C. kraussi n. sp., C. longicornis n. sp., C. longipennis n. sp., C. longistyla n. sp., C. metallica n. sp., C. minuta n. sp., C. pinensis n. sp., C. quadrimaculata n. sp., Dasybasis evenhuisi n. sp., D. gracilipalpis n. sp., D. ponandouensis n. sp., and D. setipalpis n. sp. Males of 7 species, previously known only from females, are described for the first time. Criteria for generic distinction of taxa occurring on New Caledonia are reviewed and revised, and the genus Chasmiella, previously resurrected for 5 New Caledonian species, is synonymized with Chasmia. Three recently described species are placed in synonymy: Cydistomyia danutae = C. risbeci n. syn., Dasybasis lydiae = D. kuniae n. syn., and Cydistomyia norae = Dasybasis grenieri n. syn. New combinations are proposed for 7 species: Chasmiella bozennae = Chasmia bozennae n. comb., Chasmiella conradi = Chasmia conradi n. comb., Chasmiella leszeki = Chasmia leszeki n. comb., Chasmiella kuniae = Dasybasis kuniae n. comb., Chasmiella cohici = Chasmia cohici n. comb., Cydistomyia norae = Dasybasis norae n. comb., and Cydistomyia tiwakai = Dasybasis tiwakai n. comb. A brief summary of the geology and biogeography of New Caledonia is provided from existing literature, as well as comments on the distribution and possible dispersal patterns of Tabanidae. At present, 41 species of Tabanidae in 4 genera are known from New Caledonia, the Isle of Pines and the Loyalty Islands.