Euchemotrema

The shell of species in this genus is usually about 8 to 11 mm in diameter (about 3/8 inch). The shells are brown with a velvety surface, similar to that of Stenotrema, and, in fact, this genus is sometimes combined into Stenotrema. These snails typically have a less complex aperture than Stenotrema: "without a tooth within the outer arc of the lip and with no notch in the basal lip". There are also peculiarities of the male anatomy that separate the two genera. ==Distribution==

Euchemotrema is widely distributed in eastern and central North America. ==Species==

This genus includes the following species and subspecies: • Euchemotrema cheatumi (R. W. Fullington, 1974) • Euchemotrema fasciatum (Pilsbry, 1940) • Euchemotrema fraternum (Say, 1824) • Euchemotrema fraternum montanum (Archer, 1939) • Euchemotrema hubrichti (Pilsbry, 1940) / Stenotrema hubrichti Pilsbry, 1940 • Euchemotrema leai (Binney, 1841) • Euchemotrema leai aliciae (Pilsbry, 1893) • Euchemotrema wichitorum (Branson, 1972) Wichita Mountains pillsnail ==References==