Revision of the Genus Heterlimnius HINTON (Coleoptera, Elmidae)

摘要

The genus Heterlimnius is revised. Seven species are recognized and four of them are newly described: H. ennearthrus sp. nov., H. hisamatsui sp. nov., H. jaechi sp. nov., and H. shepardi sp. nov. Optioservus hasegawai and O. ater are transferred to Heterlimnius. H. koebelei is synonymized under H. corpulentus. Both O. kubotai kubotai and O. k. saghaliensis are synonymized under H. hasegawai. O. hayashii is synonymized under H. ater. A key is provided for all species of Heterlimnius. Descriptions are provided for the larvae of H. ater, H. corpulentus and H. hasegawai.