Ventridens (Domed snails)
These are two mid-sized land snails (Ventridens demissus, the Perforate Dome, and Ventridens ligera, the Globose Dome). Both have a dome shape, perforate umbilicus, and glossy shell.
Ventridens demissus (A. Binney, 1843)
Ventridens ligera (Say, 1821)
Identification: Ventridens ligera has 6-7 whorls, usually wider than 11 mm in diameter, higher dome, basal lamina inside lip. V. demissus is narrower in diameter, lower dome, less than 11 mm.
Habitat: woodlands, moister areas; New specimens of Ventridens ligera were collected at the Copan Wildlife area in 2012 and behind a rockwall in grassy/leafy debris in rural Crawford County in 2017. The state record V. demissus were collected in three different residential yards in Crawford County; among damp woody and leafy debris along fence line at one residence.
Map: orange = county with previous published collection; yellow = new collection in previous county; green = new county, purple = other county with museum specimen in database.
Kansas Status: probably restricted; one county with recent specimens for the Globose Dome; the Perforate Dome in only one southeastern Kansas county in residential areas and probably not secure.
U.S. Map: orange = Hubricht (1985); green = other states and purple = extirpated (NatureServe 1/2017)