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- Kingdom - Animals - Animalia
  - Phylum - Mollusks - Mollusca
    - Class - Snails / Slugs - Gastropoda
      - Order - Aquatic Snails - Basommatophora
        
        Family - Sprites / Gyros / Rams-horns - Planorbidae
        
        Species - Ash Gyro - Gyraulus parvus

Ash Gyro - Gyraulus parvus

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Native Species

Global Rank: G5
State Rank: SNR

Agency Status
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General Description

We do not yet have descriptive information on this species. Please try the buttons above to search for information from other sources.

Observations in Montana Natural Heritage Program Database

Number of Observations: 172

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Relative Density

Recency

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

Habitat

Usually found on aqautic vegetation within ponds, lakes, wetlands or other lentic waterbodies,

Food Habits

Like most snails, these are herbivorous- scrapers of algae, detritus and diatoms from other vegetation of benthic substrates

Ecology

Species may be found in intermittent waters including temporary ponds and streams:

Stewardship Responsibility

References

Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Berry, S.S. 1913. A list of Mollusca from the Mussellshell Valley, Montana. Nautilus 26:130-131.
- Berry, S.S. 1916. Notes of Mollusca of central Montana. Nautilus 29:124-128.
- Hendricks, P., S. Lenard, D.M. Stagliano, and B.A. Maxell. 2013. Baseline nongame wildlife surveys on the Fort Peck Indian Reservation. Report to the Assiniboine and Sioux Tribes of the Fort Peck Indian Reservation. Montana Natural Heritage Program, Helena, MT. 83 p.
- Lehmkuhl, Dennis M. 1966. A study of the littoral invertebrates of three mountain lakes in Glacier National Park, Montana. M.A. Thesis. University of Montana. Missoula, MT.
- Russell, R.H. and R.B. Brunson. 1967. A check-list of molluscs of Glacier National Park, Montana. Sterkiana 26:1-5.
- Squyer, H. 1894. List of shells from the vicinity of Mingusville, Montana. The Nautilus 8:63-65.
- Vanatta, E.G. 1914. Montana shells. Proceedings of the Academy of Natural Sciences of Philadelphia 66:367-371.
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Additional Sources of Information Related to "Snails / Slugs"

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Dragonflies / Damselflies

Ferns and allies

Conifers

Flowering Plants (Dicots)

Flowering Plants (Monocots)

Citation for data on this website:
Ash Gyro — Gyraulus parvus. Montana Field Guide. Montana Natural Heritage Program. Retrieved on September 25, 2025, from https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=IMGASM5050