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Ribbed dagger
Pupoides hordaceus
NatureServe conservation status
Global (G-rank): G4
State (S-rank): SH
External links
Species range
All reports of this species in Utah may be from Garfield County (Chamberlin and Berry 1930, Chamberlin and Berry 1931, Gregg 1942, Pilsbry 1948), although one of these localities has been vaguely stated as being in "Wayne and Garfield counties" (Chamberlin and Berry 1930, Chamberlin and Berry 1931). It is not unlikely that the species occurs elsewhere in southern Utah.
Pilsbry (1948) mentioned that the species occurs in "San Miguel Co., Colorado, near the Utah line" and documented this locality as "Dolores canyon near mouth of Gypsum Creek, San Miguel Co. (Junius Henderson, 1914)"; this Colorado locality suggests that the species may be found in San Juan County, Utah, as well. Records of this species from three of the four Arizona counties that adjoin Utah (Apache, Navajo, and Coconino counties, Arizona), where it is "most abundant" (Pilsbry 1948), also strongly suggests its occurrence in San Juan and Kane counties, Utah.
Habitat
None of the reports of this species in Utah has provided any information regarding habitat. Gregg's (1942) locality for the species, "along North Fork of Asay Creek", suggests a riparian situation; however, no details were given, and Gregg's specimen(s) may have been dead shells, perhaps drift material washed into and perhaps down the drainage.
Discussing the species throughout its range, Pilsbry (1948) wrote: "This is a species of the arid plateaus and foothills, not found in the humid upper zone of the mountains. It is known by specimens taken in the debris of streams or in Pleistocene or later deposits."
Threats or limiting factors
Threats to this species in Utah are not known.
