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The Gray-foot Lancetooth is the only widely distributed species of its genus in the USA, the rest mostly confined to the west coast. It is also one of the more easily identified species in Indiana. Its size, whorl pattern and unique aperture shape and edge thickening is different from most other species.
Haplotrema concavum (Say, 1821)
Gray-foot Lancetooth
Haplotrema concavum (Say, 1821)
Identification: about 12 mm and 5 whorls, yellow to greenish-white color, sutures are deep, widely umbilicate showing all whorls to the apex, the outer and basal margins of the aperture are only slightly expanded.
Habitat: woodlands, among leaf litter and woody debris. A carnivorous species.
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