Virginia Land Snails
Photo(s): Aperture view of Triodopsis burchi shell by Bill Frank ©.
Click photo(s) to enlarge.
Triodopsis burchi Hubricht, 1950
Common name: Pittsylvania Threetooth
Width: 7.5-15+ mm
Height: 4.0-7.5 mm
The shell of Triodopsis burchi has a low, cone-shaped spire. The three denticles in the aperture are weak or may be absent. When they are present, a small, cone-like tooth can be found on both the upper and basal lips, and the parietal tooth is short. The final whorl does not descend in front and is guttered behind the flat, reflected lip. While the earlier whorls are smooth, the final two whorls have fine radial striae. There are no spiral lines. It is much smaller and more glossy than Triodopsis tennesseensis (Hubricht, 1950).
This snail prefers oak forests and may be found on mountainsides and in ravines under logs and leaf litter (Hubricht 1985).
Taxonomic work looking at this animal’s proteins and reproductive anatomy suggests that it is unique in its genus (Emberton, 1988). Triodopsis burchi has also been known as T. tennesseensis burchi.
Triodopsis burchi is known only from West Virginia, North Carolina and the middle counties of Virginia, where it is listed as a vulnerable species.
NatureServe Global Rank: G3
NatureServe State Rank: S3
Virginia’s wildlife action plan: Tier IV
Ken Hotopp, Meegan Winslow 10/2012Range Map