Home/Species/ Warner Springs Shoulderband

Rothelix warnerfontis

(Reeder and W.B. Miller, 1988)

Warner Springs Shoulderband

G1Critically Imperiled Found in 1 roadless area NatureServe Explorer →

G1Critically ImperiledGlobal Rank

Very high - highThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.113910

Element CodeIMGASC5100

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryInvertebrate Animal

Endemicendemic to a single state or province

KingdomAnimalia

PhylumMollusca

ClassGastropoda

OrderStylommatophora

FamilyHelminthoglyptidae

GenusRothelix

Concept Reference

Turgeon, D. D., J. F. Quinn, Jr., A. E. Bogan, E. V. Coan, F. G. Hochberg, W. G. Lyons, P. M. Mikkelsen, R. J. Neves, C. F. E. Roper, G. Rosenberg, B. Roth, A. Scheltema, F. G. Thompson, M. Vecchione, and J. D. Williams. 1998. Common and scientific names of aquatic invertebrates from the United States and Canada: Mollusks. 2nd Edition. American Fisheries Society Special Publication 26, Bethesda, Maryland. 526 pp.

Conservation Status

Rank MethodLegacy Rank calculation - Biotics v1

Review Date2020-01-04

Change Date2002-10-08

Edition Date2020-01-04

Edition AuthorsNelson, M. (2020)

Threat ImpactVery high - high

Range Extent<100 square km (less than about 40 square miles)

Number of Occurrences1 - 5

Rank Reasons

Known from only two localities, one of which has seen dramatic population declines as a result of urbanization and golf course construction.

Range Extent Comments

This species is known from only 2 localities in San Diego County, California: the type locality at Warner Springs and a small population in a ravine just below Lost Valley Spring on the Cleveland National Forest.

Occurrences Comments

2 occurrences are recorded in the California Natural Diversity Database.

Threat Impact Comments

Urbanization, including construction of golf courses, has resulted in loss of abandoned wood rat nests at one locality; water diversions and increasing fire activity/severity may affect individuals and habitat.

Ecology & Habitat

Other Nations (1)

United StatesN1

Province	Rank	Native
California	S1	Yes

Threat Assessments

Threat	Scope	Severity	Timing
1 - Residential & commercial development	Large (31-70%)	Extreme - serious	High (continuing)
1.1 - Housing & urban areas	Large (31-70%)	Serious or 31-70% pop. decline	High (continuing)
1.3 - Tourism & recreation areas	Large (31-70%)	Extreme - serious	High (continuing)
7 - Natural system modifications	Large - restricted	Serious - moderate	High - moderate
7.1 - Fire & fire suppression	Large - restricted	Serious - moderate	High - moderate
7.2 - Dams & water management/use	Large - restricted	Serious - moderate	High (continuing)

Roadless Areas (1)

California (1)

Area	Forest	Acres
Caliente	Cleveland National Forest	5,953

References (4)

California Natural Diversity Database (CNDDB). 2020. RareFind Version 5.2.14. California Department of Fish and Game, Sacramento.
Furnish, J. 2014. Regional Forester Sensitive Species: Biological Evaluation Templates for PSW Regional Sensitive mollusk species.
iNaturalist. Online. Available: http://www.inaturalist.org (accessed 2019).
Turgeon, D. D., J. F. Quinn, Jr., A. E. Bogan, E. V. Coan, F. G. Hochberg, W. G. Lyons, P. M. Mikkelsen, R. J. Neves, C. F. E. Roper, G. Rosenberg, B. Roth, A. Scheltema, F. G. Thompson, M. Vecchione, and J. D. Williams. 1998. Common and scientific names of aquatic invertebrates from the United States and Canada: Mollusks. 2nd Edition. American Fisheries Society Special Publication 26, Bethesda, Maryland. 526 pp.

Rothelix warnerfontis

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