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Scientific classification

Juga is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Semisulcospiridae.

These snails are native to the rivers of the northwestern United States and adjacent British Columbia. Several species are endemic to isolated large springs in the American Great Basin.[citation needed]

The most abundant and widespread species, Juga plicifera, attains a height of up to 35 mm. It is sculpted with fine spiral ridges and variably developed ribs that frequently disappear in parts of the shell made as the animal matures.[citation needed]


The following species and subspecies are recognized:

Subgenus Juga s.s.

Subgenus Calibasis

Subgenus Oreobasis

subgenus ?


Parasites of Juga spp. include the bacterium Neorickettsia risticii, which causes Potomac horse fever along with the associated trematode vector.[4]


  1. ^ Adams H. (1854). Gen. Rec. Moll. 1: 300.
  2. ^ a b c d e f g h i j k l Burch, J.B. (April 1982). Freshwater Snails (Mollusca: Gastropoda) of North America (PDF) (1 ed.). Cincinnati, Ohio, USA: Environmental Monitoring and Support Laboratory, Office of Research and Development, U.S. Environmental Protection Agency. p. 294.
  3. ^ a b c d NatureServe Explorer, accessed 19 November 2015.
  4. ^ Reubel, G. H.; Barlough, J. E.; Madigan, J. E. (1998). "Production and characterization of Ehrlichia risticii, the agent of Potomac horse fever, from snails (Pleuroceridae: Juga spp.) in aquarium culture and genetic comparison to equine strains". Journal of Clinical Microbiology. 36 (6): 1501–1511. PMC 104868. PMID 9620368..

External links[edit]

"Juga". National Center for Biotechnology Information (NCBI).


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