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For the municipality in Finland, see Juuka
Juga is a genus of operculate gilled snails in the family Pleuroceridae 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.
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.
Species
The following pecies and subspecies listed by Burch (1982).
Subgenus Juga s.s.
- Juga hemphilli hemphilli
- Juga hemphilli dallensis
- Juga plicifera
- Juga silicula
Subgenus Calibasis
- Juga acutifilosa acutifilosa
- Juga acutifilosa pittensis
- Juga acutifilosa siskiyouensis
- Juga occata
Subgenus Oreobasis
- Juga bulbosa
- Juga interioris
- Juga laurae
- Juga nigrina
References
- Burch, J. B. 1982. Freshwater snails (mollusca: gastropoda) of North America. U.S. Environmental Protection Agency, Cincinnati. 294 pp.
- Clarke, Arthur H. 1981. The freshwater mollusks of Canada. National Museums of Canada. 446 pp.
- List including species in Oregon: http://oregonstate.edu/ornhic/data/2004/inverts.html
References
- ^ H. Adams. 1854. Gen. Rec. Moll., 1, 300.
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