Montana Field Guide

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Montana Field Guides

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- Kingdom - Animals - Animalia
  - Phylum - Mollusks - Mollusca
    - Class - Snails / Slugs - Gastropoda
      - Order - Aquatic Snails - Neotaenioglossa
        
        Family - Amnicolas / Duskysnails - Hydrobiidae
        
        Species - Delta Hydrobe - Probythinella emarginata

Delta Hydrobe - Probythinella emarginata

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Native Species

Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:

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General Description

The validity of the species name, emarginata, is controversial (Hershler 1996). It used to be known as "lacustris"

Diagnostic Characteristics

The delta hydrobe is a very small (<5mm long) aquatic snail. Its diminutive size and flattened apex make it readily identifiable. While most aquatic snails in Montana possess lung tissue (pulmonate snails) and get their oxygen from the air, the delta hydrobe is one of a few MT snails that have gills (prosobranch snails).

Range Comments

Found wide-ranging and common in the US and Canada from Montana to Maine south to Texas

Migration

Sedentary.

Habitat

Freshwater.

References

Literature Cited AboveLegend: View Online Publication
- Hershler, R. 1996. Review of the North American aquatic snail genus Probythinella (Rissooidea: Hydrobiidae). Invertebrate Biology, 115(2): 120-144.
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Citation for data on this website:
Delta Hydrobe — Probythinella emarginata. Montana Field Guide. Montana Natural Heritage Program. Retrieved on April 25, 2024, from https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=IMGASH8010