Virginia Land Snails
Photo(s): Three views of the low-spired shell Helicodiscus shimeki, by Jeff Nekola ©.
Click photo(s) to enlarge.
Helicodiscus shimeki Hubricht, 1962
Common name: Temperate Coil
Width: 4-5 mm
Height: 1.5-2 mm
The overall shape of this species’ shell is a small disk with flattened (relatively) edges and an almost non-existent spire. Faint spiral striae, increasing in strength on later whorls, decorate the translucent, lustrous shell of Helicodiscus shimeki. The inner whorls are very narrow and increase gradually in size. The final whorl usually contains three pairs of small teeth on the inside of the outer and basal walls. The unusually shallow umbilicus is about half the diameter of the entire shell.
This snail may be found in leaf litter in upland and other wooded areas. It prefers acidic environments, whether dry or damp (Hubricht, 1985; Nekola, 2008).
No synonyms are known.
Helicodiscus shimeki may be found throughout the Northeastern and Midwestern United States and adjacent eastern Canadian provinces. In the state of Virginia it is reported only from higher counties on the north-western West Virginia border.
NatureServe Global Rank: G4G5
NatureServe State Rank: S1
Virginia’s wildlife action plan: Tier IV
Meegan Winslow, Ken Hotopp 11/2012Range Map