Range extension of Lymnaea cf. biacuminata Annandale & Rao, 1925 (Mollusca: Gastropoda: Hygrophila: Lymnaeidae), with its first record from Maharashtra state, India

Lymnaea biacuminata Annandale & Rao, 1925, is a rare freshwater snail with less than 10 locality records in the states of Telangana, Madhya Pradesh, and Uttarakhand of India. This species is taxonomically problematic and its relationship to the morphologically similar L. acuminata Lamarck, 1822, unresolved. We identify L. biacuminata from Maharashtra for the first time and this species’ distributional range to Pune, about 500 km westwards from the type locality at Hosainsagar lake between Hyderabad and Secunderabad in Telangana. In Maharashtra, we found L. cf. biacuminata sympatric with L. acuminata. To aid in distinguishing between these two species, additional information on breeding behaviour and shell morphometry of both species are provided.