Two new species of the genus Hydrometra Latreille, 1796, are described from the Oriental Region. Hydrometra cherukolensis sp. nov. is described from Kanyakumari District, Tamil Nadu, India, belongs to the Hydrometra julieni species group, and is closely related to H. julieni Hungerford & Evans, 1934 and H. julienoidea Polhemus & Polhemus, 1995. Hydrometra nicobarensis sp. nov. is described from the Great Nicobar Biosphere Reserve (GNBR), Andaman and Nicobar Islands, India, belongs to the Hydrometra lineata species group and this new species is closely related to H. borneensis Zettel & Yang, 2004. Hydrometra okinawana Drake, 1951, collected from GNBR, Andaman and Nicobar Islands, and is the first record for India. Hydrometra butleri Hungerford & Evans, 1934, is redescribed and notes on H. greeni Kirkaldy, 1898 are given. All together five species of Hydrometra, H. butleri, H. cherukolensis sp. nov., H. greeni, H. nicobarensis sp. nov. and H. okinawana are reported in the present study from India. A key to the species of Hydrometra of India and the distribution maps are also provided.
Animal Structures Animals