Common Name

Scientific Name

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Utah Taxonomy

This species was originally described within the genus Amnicola by Baily and Baily (1952) from shells collected at Bear Lake.

No subspecies have been proposed in this species.

Status in Utah

In Utah this species is known from 3 springs in Rich County (Hershler 1998).

Hershler (no date) reported that this species is "common" in all 3 of the small springs from which it is known in Utah.

Hershler (no date) noted that all 3 of the localities inhabited by this species in Utah were disturbed, this disturbance being "high" in one case and "moderate" in the other 2. These disturbances were the result of trampling by livestock at one spring and diversion of water at another; the third spring was near a road.

Records of this species from Baily and Baily in 1952 are of shells only. No living snails of this species were reported Utah until the 1990s, when Hershler (no date, 1998) documented it as living in the state; therefore, trends cannot be addressed.

Inventory in springs not surveyed by Hershler (no date), particularly others within the Bear River and Bear Lake drainages in Rich County, could reveal additional populations of this species.

Habitats Utilized in Utah

All three localities described for this species are rheocrenes, springs flowing from the ground as streams. Temperatures measured at these springs range from 10 to 14 degrees C; the only conductivity reported was 508 micromhos/cm. Their elevations were reported as 5,740 to 6,120 ft (Hershler no date).


  • Text modified from: Oliver, George V. and William R. Bosworth III. 1999. Rare, imperiled, and recently extinct or extirpated mollusks of Utah[:] a literature review. Publication number 99-29. Utah Division of Wildlife Resources, Salt Lake City. 230 pp.