Common Name

Scientific Name

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Utah Taxonomy

Both the original (Gregg 1940) and a subsequent (Gregg 1942) report of this species in Utah arranged it as a race of Hawaiia minuscula, and a later list of the mollusks of Utah (Chamberlin and Roscoe 1948) followed the same taxonomic arrangement.

No subspecies have been proposed in this species (i.e., the species is monotypic).

Status in Utah

This species has been reported from 3 localities in southwestern Utah: 2 in eastern Washington County (Gregg 1940) and 1 in extreme southwestern Garfield County (Gregg 1942).

The only information regarding abundance of this species in Utah comes from Gregg (1940), who reported 3 specimens from 2 localities; however, he did not state whether any of the 3 specimens were alive when found.

Threats to this species in Utah are not known. Population trend of this species in Utah also is not known, but it may be stable.

Inventory is needed at the 3 sites of reported occurrence of this species in Utah to ascertain whether it still exists at these localities. It should also be sought elsewhere in at least southern Utah, particularly in Kane and San Juan counties.

Habitats Utilized in Utah

The only habitat information that has been reported for this species in Utah is that of Gregg (1940), who mentioned finding it "near a spring near the entrance to [a canyon]".


  • 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.