Euchemotrema
Encyclopedia
Euchemotrema is a genus
of small, air-breathing land snail
s, terrestrial
pulmonate gastropod mollusks in the family Polygyridae
.
, and, in fact, this genus is sometimes combined into Stenotrema. 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".
There are also peculiarities of the male anatomy that separate the two genera.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of small, air-breathing land snail
Land snail
A land snail is any of the many species of snail that live on land, as opposed to those that live in salt water and fresh water. Land snails are terrestrial gastropod mollusks that have shells, It is not always an easy matter to say which species are terrestrial, because some are more or less...
s, terrestrial
Terrestrial animal
Terrestrial animals are animals that live predominantly or entirely on land , as compared with aquatic animals, which live predominantly or entirely in the water , or amphibians, which rely on a combination of aquatic and terrestrial habitats...
pulmonate gastropod mollusks in the family Polygyridae
Polygyridae
Polygyridae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.The Polygyridae make up a significant proportion of the land snail fauna of eastern North America, and are also found in western North America, northern Central America, and...
.
Shell description
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 StenotremaStenotrema
Stenotrema is a genus of gastropod in the family Polygyridae. These are typically small to medium snails, with a velvety or hairy surface and a narrow aperture, usually closely guarded by well-developed "teeth".- Distribution :...
, and, in fact, this genus is sometimes combined into Stenotrema. 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".
There are also peculiarities of the male anatomy that separate the two genera.
Species
This genus includes the following species and subspecies:- Euchemotrema cheatumi (R. W. Fullington, 1974)
- Euchemotrema fasciatum (Pilsbry, 1940)
- Euchemotrema fraternumEuchemotrema fraternumEuchemotrema fraternum is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Polygyridae....
(Say, 1824)- Euchemotrema fraternum montanum (Archer, 1939)
- Euchemotrema hubrichti (Pilsbry, 1940) / Stenotrema hubrichtiStenotrema hubrichtiStenotrema hubrichti is a species of a land snail, a gastropod in the Polygyridae family. It is endemic to the United States....
Pilsbry, 1940 - Euchemotrema leaiEuchemotrema leaiEuchemotrema leai, common name the lowland pillsnail, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Polygyridae....
(Binney, 1841) - Euchemotrema leai aliciae (Pilsbry, 1893)
- Euchemotrema wichitorum (Branson, 1972)