Rahul Sharma

Euchemotrema

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Kingdom  Animalia
Family  Polygyridae
Phylum  Mollusca
Rank  Genus
Superfamily  Helicoidea
Scientific name  Euchemotrema
Higher classification  Polygyridae
Euchemotrema httpsuploadwikimediaorgwikipediacommonsthu
Lower classifications  Euchemotrema fraternum, Euchemotrema leai

Euchemotrema fraternum say 1821 upland pillsnail


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

Contents

Euchemotrema fraternum say 1821 upland pillsnail


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 Stenotrema, 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.

Distribution

Euchemotrema is widely distributed in eastern and central North America.

Species

This genus includes the following species and subspecies:

  • 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
  • Euchemotrema leai (Binney, 1841)
  • Euchemotrema leai aliciae (Pilsbry, 1893)
  • Euchemotrema wichitorum (Branson, 1972)
  • References

    Euchemotrema Wikipedia


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