Euchemotrema

Taxobox
name = Euchemotrema

---

image_width = 200px
image_caption = "Euchemotrema fraternum"
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
ordo = Pulmonata
subordo = Eupulmonata
infraordo = Stylommatophora
parvordo = Sigmurethra
superfamilia = Helicoidea
familia = Polygyridae
genus = "Euchemotrema"
genus_authority = Archer 1939

"Euchemotrema" is a genus of small land snails, usually about 8 to 11 mm in diameter (about 3/8 inch). They are brown with a velvety surface, similar to that of "Stenotrema", and, in fact, this genus is sometimes combined into "Stenotrema". Pilsbry, Henry A. 1940. "Land Mollusca of North America (North of Mexico)". Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 675-688.] 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". Pilsbry, Henry A. 1940. "Land Mollusca of North America (North of Mexico)". Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 675.] There are also peculiarities of the male anatomy that separate the two genera.

"Euchemotrema" is widely distributed in eastern and central North America.

This genus includes the following species and subspecies: [ [http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=77513] "Euchemotrema" at "ITIS" ("Integrated Taxonomic Information System"); accessed 18 Jan. 2008.] [ [http://zipcodezoo.com/Key/Euchemotrema_Genus.asp] "Euchemotrema" at "ZipcodeZoo"; accessed 18 Jan. 2008.]

*"Euchemotrema cheatumi" (R. W. Fullington, 1974)
*"Euchemotrema fasciatum" (Pilsbry, 1940)
*"Euchemotrema fraternum" (Say, 1824)
*"Euchemotrema fraternum montanum" (Archer, 1939)
*"Euchemotrema hubrichti" (Pilsbry, 1940)
*"Euchemotrema leai" (Binney, 1841)
*"Euchemotrema leai aliciae" (Pilsbry, 1893)
*"Euchemotrema wichitorum" (Branson, 1972)

References