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Family: Gastrodontidae
Common name: Blue Glass
Discovery: E.S. Morse, 1864
Identification
Width: 3.5-4.3 mm
Height: 1.75 mm
Whorls: 3.5-4
The shell of Perpolita binneyana is heliciform with a simple peristome and no teeth. Closely spaced, transverse striae are present but weakly developed and absent from the base. The spire is slightly elevated, the aperture is well-rounded and the umbilicus shows all its volutions. No spiral striae are present. The glossy, translucent shell is nearly clear, with a slight greenish tinge.
Ecology
P. binneyana is a species of upland mixed hardwood forests of the Northeastern United States where it dwells in leaf litter. In Maine it occurs in a wide variety of habitats, including white cedar-ash wetlands (Nekola, 2008).
Taxonomy
Synonyms for P. binneyana include Nesovitrea binneyana, Hyalina binneyana, Zonites binneyana, Helix morsei, and Retinella binneyana.
Distribution
Records of P. binneyana in the northeastern United States range from Pennsylvania and delware north, and it is also known from Michigan and Wisconsin. Specimens widely reported from West Virginia are likely N. electrina (Dourson, 2015).
Conservation
NatureServe Global Rank: G5, Apparently Secure.
This species is widespread in the northern states of the Northeast region.
