Pinhole Three-Tooth

(Say, 1825)

Triodopsis fallax

Class:

Order:

Family:

Gastropoda

Stylommatophora

Polygyridae

Taxonomic Information

Helix fallax

Original Combination:

fallax = deceptive

Etymology

Original Description:

Spire convex; volutions five, with elevated lines forming grooves between them: labrum-reflected, contracting the aperture, bidentate; teeth seperated by a profound sinus; superior tooth inflected into the mouth; inferior tooth situated near the base: labrum with a large, prominent, oblique, lamelliform tooth, curving downwards so as nearly to reach the termination of the labrum: umbilicus open, exhibiting the volutions.
Greatest transverse diamter 9/20 of an inch.
This resembles the tridentata, Nob. but the upper tooth of the labrum is much inflected, the spire is more elevated, and the size is less considerable; in the former character it coincides with H. inflecta, Nob. but that shell has the umbilicus closed.

Original Description Citation:

Say, T. (1825). Descriptions of some new species of fresh water and land shells of the United States. Journal of the Academy of Natural Sciences of Philadelphia, 5(1): 119-131

Ecological Information

Native/Inavsive:

Native

Nature Serve Conservation Status:

G5: Secure

Diet

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Citations

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