Trilobopsis

Trilobopsis
Three views of a shell of Trilobopsis loricata
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Heterobranchia clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora informal group Sigmurethra
Superfamily:	Helicoidea
Family:	Polygyridae
Genus:	Trilobopsis Pilsbry, 1939

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 in diameter (1/4 to 3/16 inch).

Snails in this genus are distinguished from related snails on the basis of their reproductive anatomy.^[1]

Species

Species in the genus Trilobopsis include:^[1][2]

• 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)

References

1. Pilsbry, Henry A. 1940. Land Mollusca of North America (North of Mexico). Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 778-789.
2. Trilobopsis at ITIS (Integrated Taxonomic Information System); accessed 13 Jan. 2008.