Thiaridae, Gill, 1871

Jindal, Rajinder & Wats, Meenu, 2021, Systematic descriptions and seasonal variations of mollusc in Chandigarh (U. T., India) and its surrounding freshwater bodies, International Journal of Fisheries and Aquatic Studies 9 (3), pp. 165-173 : 169

Family: Thiaridae

Thiaridae is a family of tropical freshwater snails with an operculum and are commonly named as thiarids or trumpet snails. The shells of this family are dextral, elongated, conical, and turreted and are micro sculptured with spiral ridges. They inhabit both lotic and lentic freshwater bodies, though some taxa are also found tolerating brackish conditions. They bury themselves in mud or sandy bottoms or are found attached to rocks.

Melanoides tuberculata (Müller, 1774)

Taxonomic description - Shell dextral, operculate, slender, turreted and conical, dark reddish-brown dots and flames distributed irregularly and longitudinally arranged on the shell surface; body whorl large and swollen, sculptured with vertical ribs and spiral striae, sculpturing more prominent on upper whorls than lower; number of whorls 10; spire high; aperture pyriform, pointed above and rounded below; umbilicus imperforate, outer peristome red rimmed; columellar callus translucent anteriorly and whitish posteriorly; operculum paucispiral, nucleus placed near the base of operculum.

Thiara rudis (Lea, 1850)

Taxonomic description- Shell dextral, operculate, turreted to sub cylindrical, thick, cream or brownish cream colored, sculptured with axial ribs and spiral ridges often in the beaded form; spire high; number of whorls 8; aperture pear shaped.