Trachia asperella (Pfeiffer, 1846)

Sajan, S. K., Tripathy, Basudev & Biswas, Tulika, 2018, Species inventory of land and freshwater Molluscs from Andhra Pradesh and Telangana states of India, Records of the Zoological Survey of India 118 (2), pp. 141-155 : 146

Trachia asperella (Pfeiffer, 1846) [ Plate 2 ; Figure M]

Material examined: Near DFO office Nalgonala (1 ex.), Date: 30.viii.2016, Coll: Dr Varadaraju and Party, Reg. No: M29425/7

Shell characters: Shell small, depressed, broadly perforate, thick, pale yellowish to whitish with deep chocolate bands of variable formations, commonly with one broad band above the periphery and a few narrow ones on both sides often with a very broad one on the base. roughly sculptured with close oblique striae crowded with microscopic granules throughout; spire very low; almost flattened, whorls 4, flattened above, the last whorl bluntly angulate above the periphery, slightly compressed and tapering below, descending in front; aperture oblique, semicircula margins strongly reflected throughout, columella slowly curving.

Known distribution range: Andhra Pradesh, Madhya Pradesh, Maharashtra

IUCN status: This taxon has not yet been assessed by the IUCN Red List.

Fresh Water Molluscs

Figures

Plate 2. G.Cryptozona belangeri (Deshays, 1834); H. Cryptozona ligulata (Férussac, 1921); I. Cryptozona semirugata (Beck, 1837); J. Ariophanta interrupta (Benson, 1834); K. Macochlamys indica (Blanford & Godwin-Austen, 1908); L. Macrochlamys perplana Godwin-Austen, 1883; M. Trachia asperella (Pfeiffer, 1846)