Nuwuvi Pyrg
Pyrgulopsis nuwuvi
NatureServe conservation status
Global (G-rank): GNR
State (S-rank): S1
Utah Wildlife Action Plan status
- SGCN
External links
General information
Pyrgulopsis nuwuvi was described as a new species by Hershler et al. (2017), distinguishing it using morphological and molecular evidence from the P. kolobensis (Toquerville springsnail) species complex. Taylor (1987) first described P. kolobensis from two springs in the upper Virgin River drainage of southwestern Utah, with a subsequent review by Hershler (1998) assigning individuals from over 200 localities to the species. In this review, Hershler noted how occurrences of this species are widespread and exhibit considerable variation in morphology, both of which suggest that P. kolobensis represented a closely related species complex rather than a single distinct species (Hershler & Sada, 2002). Finally, in 2017, it was determined that P. nuwuvi was distinct from P. kolobensis, and the species was named after the Nuwuvi (Southern Paiute) people.
Species range
Nuwuvi pyrg is a species only endemic to Utah and found in southern Utah.
Habitat
This species inhabits freshwater springheads, seeps, and spring-fed streams with water temperatures ranging between 8-18 °C. Within spring complexes, springsnails can be found attached to the surface of rock substrates or the roots and stems of aquatic vegetation.
Ecology
Springsnails are considered ecosystem indicators where their absence or presence can provide information about an ecosystem's overall health and condition.
Threats or limiting factors
Threats to springsnails include: water development and management, pollution, improper grazing practices, habitat shifting and alteration, recreation, and increased temperatures.
Taxonomy
Pyrgulopsis taxonomy is complicated and constantly changing. Additional taxonomic work is needed to correctly define and delineate this group.