A taxonomic note on Truncatella guerinii A. Villa & J. B. Villa, 1841 in India (Mollusca: Littorinimorpha: Truncatellidae)

摘要

Members of the family Truncatellidae Gray, 1840 are widely distributed globally, but their presence in India is unclear. So far, only one species Truncatella guerinii A. Villa & J. B. Villa, 1841 has been reported from the Andaman and Nicobar Islands, but most malacologists were unsure of its occurrence due to the lack of appropriate descriptions and proper identification. In this paper, we confirm its presence in the Andaman Islands and also in Pondicherry in Indian waters. In addition, its natural history, distribution and the detailed taxonomy of the species is discussed.