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Family: Euconulidae
Common name: Brown Hive
Discovery: Müller, 1774
Identification
Width: 3.2 mm
Height: 2.5 mm
Whorls: 5+
The shell of Euconulus fulvus egenus has a very large body whorl, measuring over half the shell’s full height, with a rounded margin (Pilsbry, 1946). The shell aperture is wide and rounded. The radial microsculpture on the shell is strong compared to other species, especially on the relatively large nuclear whorl. Faint spiral lirae may also be seen on the glossy surface.
Ecology
Euconulus fulvus egenus can be found in moist leaf litter (Hubricht 1985).
Taxonomy
Taxonomy of the genus Euconulus is in a state of flux. However, recent genetics research shows that Euconulus fulvus egenus is distinct from E. polygyratus and the E. Chersinus, E. dentatus, E. trochulus group. (J.C. Nekola, pers. comm.).
Synonyms for E. f. egenus include Conulus chersina, C. fabricii, Euconulus trochiformis, Helix egena, H. fulva, H. mortoni, and Zonites (Conulus) fulvus.
Distribution
Euconulus fulvus egenausis part of a genetically diverse subspecies that ranges from central Asia across Beringia to North America in eastern North America, E. f. egenus is found across the upper Midwest of the United States and Canada, east to New England and the Canadian Maritimes, and south in the Appalachian Mountains.
Conservation
NatureServe Global Rank: G5
