Land Snails

Photo(s): Shell of Paravitrea subtilis © Dan Dourson.

Click photo(s) to enlarge.

Paravitrea subtilis (Hubricht, 1978)

Family: Pristilomatidae
Common name: Slender Supercoil

Identification
Width: 2.5-3 mm
Height: 1.5 mm
Whorls: 6+

The tightly coiled whorls of Paravitrea subtilis are marked with widely and irregularly-spaced radial growth lines. On the center whorls and the base of the shell, these lines are less distinct. The shell has a relatively tall aperture. Inside the final whorl, one or two sets of teeth are arranged in radial rows. Each row may contain between four and six teeth, and in some individuals, laminae replace the teeth.

Ecology
Paravitrea subtilis may be found in leaf litter on hardwood slopes (Hubricht, 1985; Dourson, 2010).

Taxonomy
There are no synonyms.

Distribution
Paravitrea subtilis is scattered through a small number of counties in Virginia, Kentucky, and Tennessee (Hubricht, 1985). In Virginia it is known only from Wise County.

Conservation
NaureServe Global Rank: G2
NaureServe State Rank: S1S2
Virginia’s wildlife action plan: Tier II

 

Meegan Winslow, Ken Hotopp 11/2012

Range Map (click to enlarge)