Hydrachna simulans Marshall, 1928

New records: India, Assam State, Kamrup district, SW of Guwahati city, Deeper Beel wetland, between the water hyacinth Eichhornia corniculata, 26.10903N 91.68359E, 37 m asl., 3. iii. 2010, leg. Bordoloi, 10/0 (0/1/0 mounted); West Bengal, Malda district, Ravindrasarobar area, temporary pool, viii.2009, leg. Chatterjee, 1/1/0.

Records from the study area: Kerala—“ H. similis “ Cook (1967); Karnataka—“ H. mysorensis, H. kloomi “ Cook (1967); “ H. mysorensis, H. similis, H. kloomi “ Prasad (1974); West Bengal—Lundblad (1969).

Remarks: Lundblad (1969) synonymized Hydrachna similis Cook, 1967, H. mysorensis Cook, 1967 and H. kloomi Imamura, 1964 with H. simulans .

Habitat. Ponds, lakes.

Distribution: China, Thailand, India.