''Trilobopsis'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of small, air-breathing

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...

s, terrestrial

pulmonate Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

s in the family

Polygyridae Polygyridae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea. MolluscaBase eds. (2021). MolluscaBase. Polygyridae Pilsbry, 1895. Accessed through: World Register of Marine Species a ...

Distribution

The distribution of this species is restricted to

Oregon Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of it ...

and

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

, USA.

Description

The shells of species in this genus are somewhat globular and about 5 to 8 mm in diameter (1/4 to 3/16 inch). 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 ''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 shel ...

'' (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 ''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 shel ...

'' (Pilsbry, 1928) *''

Trilobopsis trachypepla ''Trilobopsis'' is a genus of small, air-breathing land snails, terrestrial animal, terrestrial pulmonate gastropod mollusks in the family Polygyridae. Distribution The distribution of this species is restricted to Oregon and California, USA. D ...

'' (Berry, 1933)

References

Polygyridae {{Polygyridae-stub