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Escargot - Helix pomatia
Other Names:
Roman Snail
General Description
Shell diameter to 45 millimeters or wider. Umbilicus is slit-like. Yellowish with radial and/or spiral brown bands and sometimes with a white peripheral band (Burke 2013).
Diagnostic Characteristics
The maximum diameters of shells of native terrestrial snail species are less than 30 millimeters (Hendricks 2012).
Species Range
Montana Range
Range Descriptions
Non-native
Range Comments
Native to Europe (Burke 2013). In Montana, a population has established itself in a neighborhood in the Grant Creek drainage on the northern edge of the city of Missoula; the first records date to 2021.
Observations in Montana Natural Heritage Program Database
Number of Observations: 5
(Click on the following maps and charts to see full sized version)
Map Help and Descriptions
Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Management
The species is classified by the U.S. Department of Agriculture's Animal Plant Health Inspection Service (APHIS) as a non-quarantine pest which means that there will be no official federal response to quarantine or eradicate it. Control efforts will need to be organized locally.
Stewardship Responsibility
References
- Additional ReferencesLegend:
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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.
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