[design image slice] U.S. Department of Agriculture Forest Service on faded trees in medium light green background [design image slice] more faded trees

Rocky Mountain Region

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Find a Forest (NF)
or Grassland (NG)

U.S. Forest Service
Rocky Mountain Region
740 Simms St
Golden, CO 80401
303-275-5350

TTDTTY
Telephone for the
Hearing Impaired
303-275-5367

United States Department of Agriculture Forest Service.

Species Conservation Program: Species Rationale Index — Mollusks

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Recommendation: R2 Sensitive Species (SS)

Common Name Scientific Name 
Cooper's Rocky Mountain snail #1 | #2 Oreohelix strigosa cooperi
Pygmy mountainsnail Oreohelix pygmaea
Rocky Mountain capshell Acroloxus coloradensis


Recommendation: Not R2 Sensitive Species, But Should Be Considered For Other Emphasis Species Lists

Common Name Scientific Name 
callused vertigo Vertigo arthuri von martens
frigid ambersnail Catinella gelida
lyrate mountainsnail Oreohelix haydeni haydeni
mystery vertigo Vertigo paradoxa sterki


Recommendation: Not R2 Sensitive Species and Not of Concern

Common Name Scientific Name 
cave physa Physella spelunca
clubshell Pleurobema clava
paper pondshell Utterbackia imbecillis
sharp sprite Promenetus exacuous
striate disc Discus shimekii


Recommendation: Insufficient Information Available to Make a Recommendation

Common Name Scientific Name 
creeper Strophitus undulatus
cylindrical papershell Anodontoides ferussacianus
pondhorn Uniomerus tetralasmus

 

 

U.S. Forest Service, Rocky Mountain Region
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Last modified June 15, 2009

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