Stenotrema
Encyclopedia
Stenotrema is a genus of gastropod 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...

. These are typically small to medium snails, with a velvety or hairy surface and a narrow aperture
Aperture (mollusc)
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where part of the body of the animal emerges for locomotion, feeding, etc....

, usually closely guarded by well-developed "teeth".

Distribution

The genus occurs throughout most of North America, from Alaska, though Canada and the United States, into Mexico.

Species

It contains the following species and subspecies:
  • Stenotrema altispira (Pilsbry, 1894)
  • Stenotrema angellum Hubricht, 1858
  • Stenotrema barbigerum (Redfield, 1856)
  • Stenotrema blandianum (Pilsbry, 1903)
  • Stenotrema brevipila (Clap, 1907)
  • Stenotrema burringtoni Grimm, 1971
  • Stenotrema calvescens Hubricht, 1961
  • Stenotrema cohuttense (Clapp, 1914)
  • Stenotrema deceptum (Clapp, 1905)
  • Stenotrema depilatum (Pilsbry, 1895)
  • Stenotrema edgarianum (Lea, 1841)
  • Stenotrema edvardsi (Bland, 1856)
  • Stenotrema exodon (Pilsbry, 1900)
    • Stenotrema exodon turbinella (Clench & Archer, 1933)
  • Stenotrema florida
    Stenotrema florida
    Stenotrema florida is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Polygyridae....

    Pilsbry, 1940
  • Stenotrema hirsutum
    Stenotrema hirsutum
    Stenotrema hirsutum, common name hairy slitmouth, is a species of land snail, a gastropod in the family Polygyridae....

    (Say, 1817)
    • Stenotrema hirsutum barbatum (Clapp, 1904)
  • Stenotrema hubrichti
    Stenotrema hubrichti
    Stenotrema hubrichti is a species of a land snail, a gastropod in the Polygyridae family. It is endemic to the United States....

    Pilsbry, 1940 / Euchemotrema hubrichti (Pilsbry, 1940)
  • Stenotrema labrosum (Bland 1862)
  • Stenotrema magnifumosum (Pilsbry, 1900)
  • Stenotrema maxillatum (Gould, 1848)
  • Stenotrema pilsbryi (Ferriss, 1900) - Pilsbry's narrow-apertured land snail
    Pilsbry's narrow-apertured land snail
    Pilsbry's narrow-apertured land snail, Stenotrema pilsbryi, is a species of gastropod in the Polygyridae family. It is endemic to the United States....

  • Stenotrema pilula (Pilsbry, 1900)
  • Stenotrema simile Grimm, 1971
  • Stenotrema spinosum (Lea, 1830)
  • Stenotrema stenotrema (Pfeiffer, 1842)
  • Stenotrema unciferum (Pilsbry, 1900)
  • Stenotrema unciferum caddoense (Archer, 1935)
  • Stenotrema waldense Archer, 1938


See Euchemotrema
Euchemotrema
Euchemotrema is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae.-Shell description:The shell of species in this genus is usually about 8 to 11 mm in diameter...

for other closely related taxa, many of which are sometimes placed in Stenotrema.
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