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Juga douglasi

Strong, Garner, Johnson and Whelan, 2022

Douglas Juga

GNRUnranked Found in 4 roadless areas NatureServe Explorer →
GNRUnrankedGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.1274124
Element CodeIMGASK4260
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryInvertebrate Animal
KingdomAnimalia
PhylumMollusca
ClassGastropoda
OrderCaenogastropoda
FamilySemisulcospiridae
GenusJuga
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) described this new species.
Conservation Status
Threat ImpactUnknown
Range Extent Comments
The main distribution of this species is the southern Pit River drainages in Shasta and Lassen Counties, California, USA; it may extend into the eastern Sacramento River tributaries and the northern Mokelumne River watershed of the Sierra Nevada (Strong et al. 2022).
Threat Impact Comments
Threats have not been assessed for this species.
Ecology & Habitat

Habitat

This species is found in springs, spring runs, and small creeks in the southern Pit River system and possibly extending into larger creeks and rivers in eastern Sacramento River tributaries and the northern Mokelumne River watershed of the Sierra Nevada (Strong et al. 2022).
Other Nations (1)
United StatesNNR
ProvinceRankNative
CaliforniaSNRYes
Threat Assessments
ThreatScopeSeverityTiming
Unknown/undetermined———

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Roadless Areas (4)
California (4)
AreaForestAcres
Cub CreekLassen National Forest8,643
Devils RockShasta-Trinity National Forest16,209
Kettle Mtn.Shasta-Trinity National Forest4,589
Mill CreekLassen National Forest7,587
References (1)
  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