Euchemotrema
| Euchemotrema | |
|---|---|
| |
| Three views of a shell of Euchemotrema fraternum | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| (unranked): | clade Heterobranchia
clade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora informal group Sigmurethra |
| Superfamily: | |
| Family: | |
| Genus: | Euchemotrema |
Euchemotrema is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae.
Shell description[edit]
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[edit]
Euchemotrema is widely distributed in eastern and central North America.
Species[edit]
This genus includes the following species and subspecies:[2][3][4]
- Euchemotrema cheatumi (R. W. Fullington, 1974)
- Euchemotrema fasciatum (Pilsbry, 1940)
- Euchemotrema fraternum (Say, 1824)
- Euchemotrema fraternum montanum (Archer, 1939)
- Euchemotrema hubrichti (Pilsbry, 1940) / Stenotrema hubrichti Pilsbry, 1940[5]
- Euchemotrema leai (Binney, 1841)
- Euchemotrema leai aliciae (Pilsbry, 1893)
- Euchemotrema wichitorum (Branson, 1972) Wichita Mountains pillsnail
References[edit]
- ^ Archer A. F. (1939). "A new section and a new subspecies of Stenotrema". Nautilus 52: 98-99.
- ^ 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.
- ^ [1] Euchemotrema at ITIS (Integrated Taxonomic Information System); accessed 18 Jan. 2008.
- ^ [2] Euchemotrema at ZipcodeZoo; accessed 18 Jan. 2008.
- ^ 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.