Trichodiscinidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.
Distribution Species within this family are distributed in Mexico, Central America, Colombia, Venezuela and the Caribbean.
Description They have a flattened, discoidal shells that typically range from about 2 to 6 millimeters in diameter.
Taxonomy The family was formally established by Hartmut Nordsieck in 1987 based on distinct morphological characteristics of the species that set its members apart from related groups.
The species Averellia coactiliata was previously described by Gérard Paul Deshayes in 1839 and the genus Trichodiscina was established by Eduard von Martens in 1892.
The following two subfamilies have been recognized in the Taxonomy of Bouchet & Rocroi (2005):
Miraverelliinae Schileyko, 1991 Miraverellia H. B. Baker, 1922 Miraverellia inflata F. G. Thompson, 1959 Miraverellia sargi Crosse & P. Fischer, 1872 Miraverellia sumichrasti Crosse & P. Fischer, 1872 Miraverellia verdensis Dall, 1910 Averellia Ancey, 1887 Averellia coactiliata Deshayes, 1839 Averellia macneili Crosse, 1873 Trichodiscininae H. Nordsieck, 1987 Trichodiscina E. von Martens, 1892 Trichodiscina suturalis L.Pfeiffer, 1846 Trichodiscina cordovana L.Pfeiffer, 1857 Trichodiscina hinkleyi Pilsbry, 1920 Trichodiscina sinaloa Pilsbry, 1954
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