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Euchemotrema

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Euchemotrema
Three views of a shell of Euchemotrema fraternum
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Polygyridae
Subfamily: Triodopsinae
Tribe: Stenotrematini
Genus: Euchemotrema
Archer, 1939[1]

Euchemotrema is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Polygyridae.

Shell description

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The shell of species in this genus is usually about 8 to 11 mm in diameter (about 3/8 inch). The shells are brown with a velvety surface, similar to that of Stenotrema, and, in fact, this genus is sometimes combined into Stenotrema.[2] These snails typically have a less complex aperture than Stenotrema: "without a tooth within the outer arc of the lip and with no notch in the basal lip".[2]

There are also peculiarities of the male anatomy that separate the two genera.

Distribution

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Euchemotrema is widely distributed in eastern and central North America.

Species

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This genus includes the following species and subspecies:[2][3][4]

References

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  1. ^ Archer A. F. (1939). "A new section and a new subspecies of Stenotrema". Nautilus 52: 98-99.
  2. ^ a b c Pilsbry, Henry A. 1940. Land Mollusca of North America (North of Mexico). Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 675-688.
  3. ^ [1] Euchemotrema at ITIS (Integrated Taxonomic Information System); accessed 18 Jan. 2008.
  4. ^ [2] Euchemotrema at ZipcodeZoo; accessed 18 Jan. 2008.
  5. ^ Mollusc Specialist Group (1996). Stenotrema hubrichti. 2006 IUCN Red List of Threatened Species. Archived June 27, 2014, at the Wayback Machine Downloaded on 7 August 2007.