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Helotrephes nainamalaii sp. nov. from Meghalaya, India is described. Representatives of Helotrephes are so far known from southern China, Southeast Asia and Sundaland. The unexpected first record of Helotrephes from India expands their distribution more than 1,000 kilometres westward. The new species belongs to the H. australis species-group which is widespread in southern China and Southeast Asia. Helotrephes nainamalaii sp. nov. can be identified by the presence of a sub-basal protrusion on the genal plate, a characteristic apical hook on the aedeagus, and peculiarly shaped ventromedian carinae. The description is supplemented by a key to the species of the Helotrephes australis species-group. Tiphotrephes indicus (Distant, 1910) is recorded from Meghalaya for the first time. A check-list of Helotrephidae in India is given. |
