Cochliopidae

Cochliopidae is a family of small freshwater snails with gills and an operculum, aquatic gastropod mollusks. Paludestrina d'Orbigny, 1840 is an archaic synonym,[2] and has been placed on the Official Index of Rejected and Invalid Names by ICZN Opinion 2202.[3]

Cochliopidae
A live individual of Antrobia culveri
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Caenogastropoda clade Hypsogastropoda clade Littorinimorpha
Superfamily:	Truncatelloidea
Family:	Cochliopidae Tryon, 1866
Diversity[1]
246 freshwater species
Synonyms
Semisalsinae Giusti & Pezzoli, 1980

This family is in the superfamily Truncatelloidea and in the clade Littorinimorpha (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Description

Cochliopidae snails are characterized by sharp, elongated spire-like structures, and can be found in rivers or brackish water.[2]

2005 taxonomy

The family Cochliopidae consists of 3 subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):[4]

• Cochliopinae Tryon, 1866 - synonyms: Mexithaumatinae D. W. Taylor, 1966, Paludiscalinae D. W. Taylor, 1966
• Littoridininae Thiele, 1928
• Semisalsinae Guiusti & Pezzoli, 1980 - synonym: Heleobiini Bernasconi, 1991

Genera

Liu et al. (2001)[5] have recognized 34 genera with more than 260 species within the subfamily Cochliopinae.[5]

Strong et al. (2008)[1] have recognized 246 freshwater species within Cochliopidae.[1]

Genera within the family Cochliopidae include:

subfamily Cochliopinae

• Aphaostracon F. G. Thompson, 1968
• Coahuilix Taylor, 1966
• Cochliopa Stimpson, 1865 - type genus of the family Cochliopidae[4]
• Cochliopina Morrison, 1946

subfamily Littoridininae

• Antrobia Hubricht, 1971 - with the only species Antrobia culveri Hubricht, 1971[6] - Tumbling Creek cavesnail
• Littoridina Souleyet, 1852
• Pseudotryonia Hershler, 2001[7]
  • Pseudotryonia adamantina[7]
  • Pseudotryonia alamosae[7]
  • Pseudotryonia brevissima[7]
  • Pseudotryonia grahamae[7]
  • Pseudotryonia mica Hershler, Liu & Landye, 2011[7]
  • Pseudotryonia pasajae Hershler, Liu & Landye, 2011[7]

subfamily Semisalsinae - there are three genera in the subfamily Semisalsinae[8]

• Heleobia Stimpson, 1865[4][8]
• Heleobops Thompson, 1968[8]
• Semisalsa Radoman, 1974[4][8]

subfamily ? (either Cochliopinae or Littoridininae)

• Aroapyrgus H. B. Baker, 1931
• Balconorbis Hershler & Longley, 1986
• † Carinulorbis Yen, 1949
• Chorrobius Hershler, Liu & Landye, 2011[7]
• Dyris Conrad, 1871 - it has extant species and also 26 species in Miocene Pebas Formation[9]
• Emmericiella Pilsbry, 1909
• Eremopyprgus Hershler, 1999[10][11]
• † Feliconcha Wesselingh, Anderson & Kadolsky, 2006 - two species from Miocene of the Pebas Formation[9]
  • Feliconcha feliconcha Wesselingh, Anderson & Kadolsky, 2006[9]
  • Feliconcha reticulata Wesselingh, Anderson & Kadolsky, 2006[9]
• (probably extant)[9] Glabertryonia Wesselingh, Anderson & Kadolsky, 2006 - three species[9]
  • † Glabertryonia glabra Wesselingh, Anderson & Kadolsky, 2006 - from Miocene of the Pebas Formation[9]
  • † Glabertryonia sp. 1 - from Pliocene of the Las Piedras Formation[9]
  • (probably extant) Glabertryonia sp. 2 - from Holocene of Surinam, probably extant[9]
• Juturnia Hershler, Liu & Stockwell, 2002
• Lithococcus Pilsbry, 1911
• Mesobia F. G. Thompson & Hershler, 1991
• Mexipyrgus Taylor, 1966
• Minckleyella Hershler, Liu & Landye, 2011[7] - with the only species Minckleyella balnearis Hershler, Liu & Landye, 2011[7]
• Onobops Thompson, 1968[9]
• Pyrgophorus Ancey, 1888[9]
• Sioliella Haas, 1949
• Spurwinkia Davis, Mazurkiewicz & Mandracchia, 1982
• Texadina Abbott & Ladd, 1951
• Thalassobia Bourguignat in Mabille, 1877

Cladogram

A cladogram based on sequences of mitochondrial cytochrome-c oxidase I (COI) genes showing phylogenic relations of species within Cochliopidae:[5]

Cochliopidae

Onobops jacksoni     Heleobops docimus, Heleobops dalmatica             Cochliopina riograndensis       Cochliopa sp.     Lithococcus multicarinatus           Mexithauma quadripaludium     Aroapyrgus sp.               Eremopyrgus eganensis     Zetekina sp. 1, Zetekina sp. 2           "Tryonia" brevissima, "Tryonia" alamosae     Aphaostracon sp.             Littoridinops monroensis, Littoridinops palustris     Pyrgophorus platyrachis         "Tryonia" kosteri     Durangonella coahuilae         Spurwikinia salsa             Tryonia clathrata, Tryonia rowlandsi, Tryonia aequicostata     Mexipyrgus carranzae             "Tryonia" robusta

References

1. Strong E. E., Gargominy O., Ponder W. F. & Bouchet P. (2008). "Global Diversity of Gastropods (Gastropoda; Mollusca) in Freshwater". Hydrobiologia 595: 149-166. hdl:10088/7390 doi:10.1007/s10750-007-9012-6.
2. Bourguignat, Jules René (1888-01-01). Iconographie malacologique des animaux mollusques fluviatiles du Lac Tanganika (in French). Impr. Crété.
3. Bouchet, P. (2015). Paludestrina d'Orbigny, 1840. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=558766 on 2015-12-12
4. Bouchet, Philippe; Rocroi, Jean-Pierre; Frýda, Jiri; Hausdorf, Bernard; Ponder, Winston; Valdés, Ángel & Warén, Anders (2005). "Classification and nomenclator of gastropod families". Malacologia. Hackenheim, Germany: ConchBooks. 47 (1–2): 1–397. ISBN 3-925919-72-4. ISSN 0076-2997.
5. Liu H.-P., Hershler R. & Thompson F. G. (2001). "Phylogenetic Relationships of the Cochliopinae (Rissooidea: Hydrobiidae): An Enigmatic Group of Aquatic Gastropods". Molecular Phylogenetics and Evolution 21(1): 17-25. doi:10.1006/mpev.2001.0988.
6. Kabat A. R. & Hershler R. (1993). "The prosobranch snail family Hydrobiidae (Gastropoda: Rissooidea): review of classification and supraspecific taxa". Smithsonian Contributions to Zoology 547: 1-94. PDF.
7. Hershler R., Liu H.-P. & Landye J. J. (2011). "Two new genera and four new species of freshwater cochliopid gastropods (Rissooidea) from northeastern Mexico". Journal of Molluscan Studies 77(1): 8-23. doi:10.1093/mollus/eyq033.
8. Kroll O., Hershler R., Albrecht C., Terrazas E. M., Apaza R., Fuentealba C., Wolff C. & Wilke T. (2012). "The endemic gastropod fauna of Lake Titicaca: correlation between molecular evolution and hydrographic history". Ecology and Evolution 2(7): 1517-1530. doi:10.1002/ece3.280.
9. Wesselingh F. P., Anderson L. C. & Kadolsky D. (2006). "Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia". Scripta Geologica 1333: 19-290. PDF.
10. Hershler R., Liu H.-P. & Landye J. J. (2002). "A new species of Eremopyprgus (Hydrobiidae: Cochliopinae) from the Chihuahuan desert, Mexico: Phylogentic relationships and biogeography". Journal of Molluscan Studies 68: 7-13. PDF.
11. 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): 306-337. PDF.

Further reading

• Hershler R., Davis C. L., Kitting C. L & Liu H.-P. (2007). "Discovery of introduced and cryptogenic cochliopid gastropods in the San Francisco Estuary, California". Journal of Molluscan Studies 73(4): 323-332. PDF.
• Hershler R. & Thompson F. G. (1992). "A Review of the Aquatic Gastropod Subfamily Cochliopinae (Prosobranchia: Hydrobiidae)". Malacological Review, Supplement 5: 1-140. pages 16–18.
• Wilke T., Haase M., Hershler R., Liu H.-P., Misof B. & Ponder W. (2013) Pushing short DNA fragments to the limit: Phylogenetic relationships of ‘hydrobioid’ gastropods (Caenogastropoda: Rissooidea). Molecular Phylogenetics and Evolution, 66: 715-736

External links

• Cochliopidae on WoRMS