Trilobopsis is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae.
Distribution The distribution of this species is restricted to Oregon and California, USA.
Description The shells of species in this genus are somewhat globular and about 5 to 8 mm (1/4 to 3/16 inch) in diameter.
Snails in this genus are distinguished from related snails on the basis of their reproductive anatomy.Pilsbry, Henry A. 1940. Land Mollusca of North America (North of Mexico). Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 778-789.
Species Species in the genus Trilobopsis include: Trilobopsis at ITIS (Integrated Taxonomic Information System); accessed 13 Jan. 2008. Trilobopsis loricata (Gould, 1846) Trilobopsis loricata lowei (Pilsbry, 1925) Trilobopsis loricata mariposa Pilsbry, 1940 Trilobopsis loricata nortensis (Berry, 1933) Trilobopsis loricata perforata Pilsbry, 1940 Trilobopsis loricata sonomaensis (Hemphill, 1911) Trilobopsis penitens (Hanna & Rixford, 1923) Trilobopsis roperi (Pilsbry, 1889) Trilobopsis tehamana (Pilsbry, 1928) Trilobopsis trachypepla (Berry, 1933)
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