Home/Species/ Blue Mountain Juga

Juga caerulea

Strong, Garner, Johnson and Whelan, 2022

Blue Mountain Juga

G1Critically Imperiled Found in 1 roadless area NatureServe Explorer →

G1Critically ImperiledGlobal Rank

Identity

Unique IDELEMENT_GLOBAL.2.113131

Element CodeIMGASK4110

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryInvertebrate Animal

Endemicendemic to a single state or province

KingdomAnimalia

PhylumMollusca

ClassGastropoda

OrderCaenogastropoda

FamilySemisulcospiridae

GenusJuga

Other Common Names

Blue Mountains Juga (EN)

Concept Reference

Strong, E.E., J.T. Garner, P.D. Johnson, and N.V. Whelan. 2022. A systematic revision of the genus Juga from fresh waters of the Pacific Northwest, USA (Cerithioidea, Semisulcospiridae). European Journal of Taxonomy 848: 1-97. Online: https://doi.org/10.5852/ejt.2022.848.1993

Taxonomic Comments

A systematic revision of the genus Juga found that almost all species previously considered valid were para- or polyphyletic grades of organization in shell morphology. Most species previously suggested to be putatively new were confirmed to be morphological variants of species already described (Strong and Whelan 2019, Strong et al. 2022). Based on this analysis, Strong and Whelan (2022) confirmed the validity of the Blue Mountain Juga (formerly Juga sp. 2 in this database) as a distinct species and formally described it as J. caerulea.

Conservation Status

Review Date1995-12-19

Change Date1995-12-19

Range Extent Comments

This species is endemic to the John Day River drainage in Grant County, northeastern Oregon, USA (Strong et al. 2022).

Occurrences Comments

This species is known from a few sites within a single spring complex in Phipps Meadow (Strong et al. 2022).

Threat Impact Comments

The is species has been impacted by grazing (Strong et al. 2022).

Ecology & Habitat

Habitat

This species is found in springs and spring runs (Strong et al. 2022)/

Other Nations (1)

United StatesNNR

Province	Rank	Native
Oregon	S1	Yes

Threat Assessments

Threat	Scope	Severity	Timing
2 - Agriculture & aquaculture	—	—	—
2.3 - Livestock farming & ranching	—	—	—

Roadless Areas (1)

Oregon (1)

Area	Forest	Acres
Dixie Butte	Malheur National Forest	12,208

References (1)

Strong, E.E., J.T. Garner, P.D. Johnson, and N.V. Whelan. 2022. A systematic revision of the genus Juga from fresh waters of the Pacific Northwest, USA (Cerithioidea, Semisulcospiridae). European Journal of Taxonomy 848: 1-97. Online: https://doi.org/10.5852/ejt.2022.848.1993

Juga caerulea

Habitat

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