Common Name

Scientific Name

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Utah Taxonomy

Hershler (no date) called this species Pyrgulopsis new species 44. Hershler (1998) described the species as Pyrgulopsis inopinata and suggested the common name carinate Glenwood pyrg for it.

The type locality for the species is "[s]pring, Glenwood, Sevier River drainage, Sevier County, Utah, T 23S, R 2W, NW section 36"; "[t]he type locality is the upper spring at Glenwood ..., which flows out of a pipe and forms a shallow brook" (Hershler 1998). The holotype, USNM 883943, was collected 10 May 1995.

No subspecies have been proposed in this species.

Status in Utah

This species is known from two springs at one locality in Glenwood, Sevier County, and from another spring 5.4 km south of Sigurd, Sevier County (Hershler no date, 1998).

Hershler (no date) reported that this species is "scarce" at the type locality; relative to other kinds of organisms, its overall abundance should be considered exceedingly low. It is known from only one other location not far from the type locality (Hershler 1998), and at this other locality of occurrence, there is the possibility that this species is hybridizing with another species, Pyrgulopsis kolobensis (Hershler 1998).

Hershler (no date) noted high disturbance and recreational use of the site that includes the type locality of this species. The known threat to the species is thus judged to be great. Its population trend is unknown.

Inventory of other springs in the Sevier County area may be useful.

This species coexists with a related species, Pyrgulopsis chamberlini, in the two closely associated springs at Glenwood, Sevier County, that are the type localities of both species (Hershler 1998).

Habitats Utilized in Utah

Hershler (no date) reported the habitat of this species at Glenwood as a rheocrene, temperature 16 degrees C, conductivity 308 micromhos/cm; the elevation of the Glenwood locality is 5,580 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.