''Tryonia'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of
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 in the
family
Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
Hydrobiidae.
[Wesselingh F. P., et al. (2006).]
Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia.
'' Scripta Geologica'' 1333 19-290. This genus is sometimes placed in the family
Cochliopidae[Bouchet, P. (2014). Tryonia Stimpson, 1865. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=722774 on 2014-11-16]
Snails of this genus are very small with narrow shells. Females brood young within the genital tract. Species usually live in
springs. The genus is differentiated from others by the structure of the male and female reproductive systems.
[Hershler, R., et al. (2011)]
New species and records of springsnails (Caenogastropoda: Cochliopidae: Tryonia) from the Chihuahuan Desert (Mexico and United States), an imperiled biodiversity hotspot.
''Zootaxa'' 3001 1-32.
Most of these snails occur in western North America, especially the
Chihuahuan Desert
The Chihuahuan Desert ( es, Desierto de Chihuahua, ) is a desert ecoregion designation covering parts of northern Mexico and the southwestern United States. It occupies much of far West Texas, the middle to lower Rio Grande Valley and the lower P ...
. There are also species known in
Florida
Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...
and
Guatemala
Guatemala ( ; ), officially the Republic of Guatemala ( es, República de Guatemala, links=no), is a country in Central America. It is bordered to the north and west by Mexico; to the northeast by Belize and the Caribbean; to the east by H ...
.
[
]
Species
Species include:
* '' Tryonia adamantina'' – Diamond Y springsnail, Diamond tryonia
* ''Tryonia aequicostata
''Tryonia'' is a genus of freshwater snails in the family Hydrobiidae.Wesselingh F. P., et al. (2006).Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia.''Scripta Geologica'' 1333 19-290. This genus is sometimes placed ...
'' – smooth-rib hydrobe
* '' Tryonia alamosae'' – Alamosa springsnail, Caliente tryonia
* '' Tryonia angulata'' – Sportinggoods tryonia
* ''Tryonia brevissima
''Tryonia'' is a genus of freshwater snails in the family Hydrobiidae.Wesselingh F. P., et al. (2006).Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia.''Scripta Geologica'' 1333 19-290. This genus is sometimes placed ...
'' – regal hydrobe
* '' Tryonia brunei'' – Brune's tryonia
* ''Tryonia cheatumi
Cheatum's snail also known as the Phantom tryonia, scientific name ''Tryonia cheatumi'', is a species of small freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae.
This species is endemic to the ...
'' – Phantom tryonia, Cheatum's snail
* ''Tryonia circumstriata
''Tryonia'' is a genus of freshwater snails in the family Hydrobiidae.Wesselingh F. P., et al. (2006).Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia.''Scripta Geologica'' 1333 19-290. This genus is sometimes placed ...
''
* '' Tryonia clathrata'' Stimpson, 1865 – grated tryonia (the type species
In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...
)[
* '' Tryonia diaboli'' – devil tryonia
* '' Tryonia elata'' – Point of Rocks tryonia
* '' Tryonia ericae'' – minute tryonia
* '' Tryonia gilae'' – Gila tryonia
* '' Tryonia imitator'' – mimic tryonia, California brackish water snail
* '' Tryonia infernalis'' – Blue Point Tryonia]Tryonia variegata
The Amargosa tryonia, scientific name ''Tryonia variegata'', is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to California, United States. Th ...
'' – Amargosa tryonia
References
External links
* Myers, P., et al. 2014
''Tryonia''.
The Animal Diversity Web.
* Hershler, R. (1999)
A systematic review of the hydrobiid snails (Gastropoda: Rissoidea) of the Great Basin, western United States. Part II. Genera ''Colligyrus'', ''Fluminicola'', ''Pristinicola'', and ''Tryonia''".
''The Veliger'' 42(4) 306-37.
* Hershler, R. & F. G. Thompson. (1987)
North American Hydrobiidae (Gastropoda: Rissoacea): redescription and the systematic relationships of ''Tryonia'' Stimpson, 1865 and ''Pyrgulopsis'' Call and Pilsbry, 1886.
'' The Nautilus'' 101(1) 25-32.
* Stimpson, W. (1865). Researches upon the Hydrobiinae and allied forms chiefly made upon materials in the museum of the Smithsonian Institution. '' Smithsonian Miscellaneous Collections''
(201)
1-59
page 48
* Thompson F.G. (2011) ''An annotated checklist and bibliography of the land and freshwater snails of México and central America''. Florida Museum of Natural History, Bulletin 50(1): 1-299.
Cochliopidae
Taxa named by William Stimpson
{{Cochliopidae-stub