Idiopyrgus is a genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of freshwater snail
Freshwater snail
A freshwater snail is one kind of freshwater mollusc, the other kind being freshwater clams and mussels, i.e. freshwater bivalves. Specifically a freshwater snail is a gastropod that lives in a watery non-marine habitat. The majority of freshwater gastropods have a shell, with very few exceptions....

s with gills and an operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...

, aquatic
Aquatic animal
An aquatic animal is an animal, either vertebrate or invertebrate, which lives in water for most or all of its life. It may breathe air or extract its oxygen from that dissolved in water through specialised organs called gills, or directly through its skin. Natural environments and the animals that...

 gastropod mollusks in the family Pomatiopsidae
Pomatiopsidae is a family of small mainly freshwater snails with gills and an operculum, aquatic gastropod mollusks in the superfamily Rissooidea ....



The distribution of the genus Idiopyrgus includes Brazil.


Species within the genus Idiopyrgus include:
  • Idiopyrgus pilbryi F. Baker, 1913
  • Idiopyrgus souleyetianus
    Idiopyrgus souleyetianus
    Idiopyrgus souleyetianus is a species of freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Pomatiopsidae.Idiopyrgus souleyetianus is the type species of the genus Idiopyrgus.-Distribution :...

    Pilsbry, 1911 - type species
  • Idiopyrgus walkeri Pilsbry, 1924

Malek (1983) noted that Idiopyrgus pilbryi and Idiopyrgus walkeri were described from shells only, but should stay valid until the anatomy of the soft parts is also elucidated.
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