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Montana Field Guides

Glossy Pillar - Cochlicopa lubrica
Other Names:  Cionella lubrica, Helix lubrica


Global Rank: G5
State Rank: SNR

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General Description
A small shell, to about 2.5 mm diameter and 6.5 mm in height, spindle-shaped (pupiform) with a long and smooth spire bluntly-rounded at the apex, about 5 to 7 whorls. Shell coloration is translucent light brown to amber, and glossy. Aperture taller than wide, ovate and sub-vertical, lip thickened within by an opaque rib and lacks teeth (denticles); periphery rounded; umbilicus absent. Animal is darkish gray, paler on the sides (Hendricks 2012, Burke 2013). Internal anatomy is described by Pilsbry (1948) and Outeiro et al. (1990).

Diagnostic Characteristics
Combination of size (to 6.5 mm height), a glossy shell with long smooth spire that is blunt at the apex, a thickened lip, and absense of teeth in aperture, differentiates this shell from all others, including other smaller pupiform species.

Species Range
Montana Range

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Range Comments
Throughout Europe, northern Asia and Africa, and North America to Mexico (Burke 2013). In Montana, reported on both sides of the Continental Divide from five counties: Flathead, Lewis and Clark, Missoula, Ravalli, Wheatland. Elevation range is 963 to 1341 m (3160 to 4400 ft). Range in Montana poorly defined. May be relatively common locally; 17 were found at one Ravalli County site in late June (Hendricks 2012). Range in Montana still poorly documented.

Summary of Observations Submitted for Montana
Number of Observations: 18

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Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Moister sites, often in disturbed areas such as gardens, residential areas, roadsides and pastures; not common in natural areas or dense forest. Canopy tree species include black cottonwood, aspen, scattered Engelmann spruce, ponderosa pine, secondary canopy species include willow and alder. Found under woody debris and in leaf litter or duff (Hendricks 2012).

References
  • Literature Cited AboveLegend:   View Online Publication
    • Burke, T. E. 2013. Land snails and slugs of the Pacific Northwest. Corvallis, OR: Oregon State University Press. 344 p.
    • Hendricks, P. 2012. A Guide to the Land Snails and Slugs of Montana. A report to the U.S. Forest Service - Region 1. Montana Natural Heritage Program, Helena, MT. vii + 187 pp. plus appendices.
    • Outeiro, A., S. Mato, I. Riballo, and T. Rodriguez. 1990. On Cochlicopa lubrica (Müller, 1774) and Cochlicopa lubricella (Porro, 1837) (Gastropoda: Pulmonata: Cochlicopidae) in the Sierra de O Courel (Lugo, NW Spain). The Veliger 33:408-415
    • Pilsbry, H.A. 1948. Land Mollusca of North America (north of Mexico), Volume II Part 2. The Academy of Natural Sciences of Philadelphia Monograph Number 2(2): 521-1113.
  • Additional ReferencesLegend:   View Online Publication
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    • Berry, S.S. 1916. Notes of Mollusca of central Montana. Nautilus 29:124-128.
    • Forsyth, R.G. 2004. Land snails of British Columbia. Royal British Columbia Museum: Victoria, British Columbia, Canada. 188 pp.
    • Frest, T.J. and E.J. Johannes. 2001. An annotated checklist of Idaho land and freshwater mollusks. Journal of the Idaho Academy of Science 36(2):1-51.
    • Hendricks, P. 2009. Terrestrial mollusk surveys in Glacier National Park during 2008, including an illustrated key to all documented species. Helena, Mont: Montana Natural Heritage Program.
    • Smith, A.G. 1943. Mollusks of the Clearwater Mountains, Idaho. Proceedings of the California Academy of Sciences, fourth series, 23:537-554.
    • Vanatta, E.G. 1914. Montana shells. Proceedings of the Academy of Natural Sciences of Philadelphia 66:367-371.
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Citation for data on this website:
Glossy Pillar — Cochlicopa lubrica.  Montana Field Guide.  .  Retrieved on , from