Virginia Land Snails
Paravitrea tridens Pilsbry, 1946
Photo(s): You can see the base of three internal "teeth" through the bottom of Paravitrea tridens' shell. Image by Dan Dourson ©
Click photo(s) to enlarge.
Allogona profunda (Say, 1821)
Common name: White-foot Supercoil
Width: 5.5-6.5 mm
Height: 2.5-3.5 mm
The spire of Paravitrea tridens is low but distinctively dome-shaped and somewhat pointed. The shell is lined with radial growth wrinkles and the periphery appears a bit oblong. The aperture is larger than in other Paravitrea species. As a juvenile, the shell may have between one and three sets of three teeth each, radially-aligned inside the final whorl. These disappear with age, however, and the adult shell is toothless.
This animal may be found in moist leaf litter on mountain hillsides (Hubricht, 1985).
Paravitrea tridens has also been known as Paravitrea capsella tridens.
Paravitrea tridens is only known from a few counties in the easternmost Appalachian Mountains of Tennessee (Hubricht, 1985). It might be found in nearby western Virginia, perhaps Washington, Grayson, or Smyth Counties. The species is not yet reported.
NatureServe Global Rank: G2
NatureServe State Rank: SNR
Meegan Winslow 11/2012