Montana Field Guide

Help

Montana Field Guides

Home - Other Field Guides
- 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

No photos are currently available

If you have a high quality photo of this species, are confident in the identification, and would like to submit it for inclusion on the Montana Field Guide, please send it to us using our online photo submission tool.

Image Copyright and Usage Information

Native Species

Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:

External Links

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

(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)

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.
- 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.
Web Search Engines for Articles on "Ash Gyro"
Additional Sources of Information Related to "Snails / Slugs"

Take us with you!

Look for this PDF icon as you search and browse. Click it to build a custom PDF with species shown on that page or for all the species within that taxonomic level. To create your own list of species, use the PDF Creator tool at the bottom of the Advanced Search page.

Here's some links if you want to download a whole group.

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 1, 2025, from https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=IMGASM5050