''Pyrgophorus'' is a genus of very small

freshwater snail Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs ...

s with a

gill A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are ...

and an operculum, aquatic

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...

s in the family

Hydrobiidae Hydrobiidae, commonly known as mud snails, is a large cosmopolitan family of very small freshwater and brackish water snails with an operculum; they are in the order Littorinimorpha. Distribution Hydrobiidae are found in much of the world, ...

Species

Species in the genus ''Pyrgophorus'' include:''Pyrgophorus''

ITIS The Integrated Taxonomic Information System (ITIS) is an American partnership of federal agencies designed to provide consistent and reliable information on the taxonomy of biological species. ITIS was originally formed in 1996 as an interagenc ...

, accessed 26 July 2009. *''

Pyrgophorus cisterninus ''Pyrgophorus cisterninus'' is a species of very small aquatic snail, an operculate gastropod mollusk in the family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marr ...

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Küster Küster may refer to: * Ernst Georg Ferdinand Küster (1839–1930), German surgeon * Ernst Küster (1874–1953), German botanist * Heinrich Carl Küster (1807–1876), malacologist Malacology is the branch of invertebrate zoology that deals ...

, 1852) *''

Pyrgophorus parvulus ''Pyrgophorus parvulus'' is a species of gastropods The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and sl ...

'' ( Guilding, 1828) *''

Pyrgophorus platyrachis ''Pyrgophorus platyrachis'' is a species of very small aquatic snail, an operculate gastropod mollusk in the family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marr ...

'' (

Thompson Thompson may refer to: People * Thompson (surname) * Thompson M. Scoon (1888–1953), New York politician Places Australia *Thompson Beach, South Australia, a locality Bulgaria * Thompson, Bulgaria, a village in Sofia Province Canada * ...

, 1968) - serrate crownsnail *''

Pyrgophorus spinosus ''Pyrgophorus spinosus'', common name the spiny crownsnail, is a species of very small freshwater snail with a gill and an operculum (gastropod), operculum, an aquatic animal, aquatic gastropod mollusk in the family Hydrobiidae. Taxonomy ''Pyr ...

'' (Call &

Pilsbry Henry Augustus Pilsbry (7 December 1862 – 26 October 1957) was an American biologist, malacologist and carcinologist, among other areas of study. He was a dominant presence in many fields of invertebrate taxonomy for the better part of a centu ...

, 1886) - spiny crownsnail *''

Pyrgophorus coronatus ''Pyrgophorus coronatus'' is a species of very small aquatic snail, an operculate gastropod mollusk or micromollusk in the family Hydrobiidae. Description Distribution and habitat In Nicaragua, it is found in abundance in the volcanic crater ...

'' ( Pfeiffer, 1840)

References

Hydrobiidae Taxa named by César Marie Félix Ancey {{Hydrobiidae-stub