Lithasia
Encyclopedia
Lithasia is a genus
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 medium-sized freshwater snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...

s, 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...

 gilled gastropod mollusks in the family Pleuroceridae
Pleuroceridae
Pleuroceridae, common name pleurocerids, is a family of small to medium-sized freshwater snails, aquatic gilled gastropod mollusks in the superfamily Cerithioidea.These snails have an operculum and typically a robust high-spired shell....

. This genus is endemic to rivers in the mid-southern United States.

Species

Species within the genus Lithasia include:
  • armigerous river snail
    Armigerous river snail
    The armigerous river snail or armored rocksnail, scientific name Lithasia armigera, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States....

     (Lithasia armigera)
  • knobby rocksnail
    Knobby rocksnail
    The knobby rocksnail, scientific name Lithasia curta, is a species of [medium-sized freshwater snails, aquatic gilled gastropod mollusks in the family Pleuroceridae. This species is endemic to the United States....

     (Lithasia curta)
  • Dutton's river snail
    Dutton's river snail
    Dutton's river snail also known as the helmet rocksnail, scientific name Lithasia duttoniana, is a species of freshwater snails with an operculum, aquatic gastropod mollusks in the family Pleuroceridae. This species is endemic to the United States....

     (Lithasia duttoniana)
  • geniculate river snail
    Geniculate river snail
    The geniculate river snail or ornate rocksnail, scientific name Lithasia geniculata, is a species of freshwater snails with an operculum, aquatic gastropod mollusks in the family Pleuroceridae. This species is endemic to the United States....

     (Lithasia geniculata)
  • Jay's river snail
    Jay's river snail
    Jay's river snail also known as the rugose rocksnail, scientific name Lithasia jayana, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae, the hornsnails. This speciet is endemic to the United States....

     (Lithasia jayana)
  • Elk River file snail
    Elk River file snail
    The Elk River file snail also known as the warty rocksnail, scientific name Lithasia lima, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States....

     (Lithasia lima)
  • muddy rocksnail
    Muddy rocksnail
    The muddy rocksnail, also known as the rugged river snail, scientific name Lithasia salebrosa, is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States....

     (Lithasia salebrosa)
  • varicose rocksnail
    Varicose rocksnail
    The varicose rocksnail also known as the verrucose file snail, scientific name Lithasia verrucosa, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States....

    (Lithasia verrucosa)
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