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List of non-marine molluscs of Venezuela

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List of non-marine molluscs of Venezuela
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The non-marine molluscs of Venezuela are a part of the molluscan fauna of Venezuela (which is part of the wildlife of Venezuela). Non-marine molluscs are the snails, clams and mussels that live in freshwater habitats, and the snails and slugs that live on land. Sea-dwelling molluscs are not included in this list.

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Shells of non marine molluscs from Venezuela. Bivalves: Anodontites trapesalis; Paxyodon syrmatophorus; Mycetopoda pittieri. Gastropods: Pomacea doliodes; Megalobulimus oblongus.
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Location of Venezuela

A number of species of non-marine molluscs are found in the wild in Venezuela.

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Historical background

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Studies on the knowledge of the Venezuelan malacofauna begin in the nineteenth century with the work of German malacologist Eduard von Martens around 1873 who published the first list of the mollusks Venezuela.[1] Three years later the German-Venezuelan Adolfo Ernst, taking as its starting point and extending Martens list, published a second list in 1876.[2] Subsequent to these two pioneering nineteenth century works, only sporadic descriptions were published in foreign publications. It took about half a century for new listings of malacofauna of Venezuela to be published, this time by American H. B. Baker in the mid-1920s.[3][4][5][6][7][8]

Following Baker's work is beginning to make as many Venezuelan species descriptions and numerous national and regional listings including listings include: Adolfo Lutz, who in 1928 lists and makes observations on malacofauna Valencia lake and surrounding areas,[9] H. Richards G. Hummelinck & P. W. Malacofauna 1940 describing the island of Margarita,[10] Arias in 1952 and 1953 in which he describes the fauna of the regions of Baruta, El Hatillo and Perija region;[11][12] Thompson, who in 1957 described the shellfish National Park Henri Pittier and surrounding areas;[13] Martinez and Miranda in 1968 described pulmonate molluscs of Caracas and surrounding areas,[14] Fernández in 1982, which describes sitecueros of slugs and Venezuela,[15] Martinez et al. in 2004 which states bivalve fauna Venezuela freshwater,[16] Lasso and collaborators in 2009 which describes the fauna of the basin of the Orinoco.[17]

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Diversity

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Pomacea urceus family Ampullariidae member, one of the most diverse

The Venezuelan malacofauna not marine mollusks is composed of classes Gastropoda and Bivalvia, presenting a greater diversity of species in the gastropod.

In the freshwater gastropod families with more species are Ampullariidae (35 spp.) And Planorbidae (15 spp.).[8][14][17] In terrestrial gastropods include Ortalicidae (35 spp.) and Subulinidae (16 spp.).[6][7][11][12][13]

Among the bivalve families with more species are Mycetopodidade (17 spp.) and Hyriidae (10 spp.)[16][17]

Regarding the introduced species, the largest number of species is between terrestrial mollusks, primarily on families Subulinidae (6 spp.), Limacidae (4 spp.) And Helicidae (3 spp.)[14][15][18][19]

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Distribution

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Pomacea dolioides

The Venezuelan malacofauna marina not primarily distributed throughout the entire Venezuelan territory, but the greatest number of species and greater distribution has been reported for the river basin Orinoco.[16][17] The vast majority of species usually live in areas calm water pipes or flooding of rivers and lakes. Many of the species usually have local distributions such as slugs and seven of leathers that often live primarily in the areas of cultivation in the north and the Andean region,[14][15] However extend very widely distributed species that can be located throughout the country as in the case of molluscs Ampullariidae amphibians and within the family which include Marisa cornuarietis,[8][20] Pomacea urceus (Guarura),[8][21][22][20] Pomacea glauca,[8][20] Pomacea dolioides.[8][20][23] Among the highlights landshells Megalobulimus oblongus (Guacara).[7][11][12][13][20]

In relation to introduced species is noteworthy that some of it was spread widely by middle natural environment among them are: Achatina fulica (Giant African Snail),[24][25] Arion subfuscus[15] Subulina octona,[7][10][26] and Thiara granifera[17][18][20] Melanoides tuberculata.[17][18][20]

List of non-marine molluscs of Venezuela

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The list of non-marine molluscs of Venezuela consists of:

  • Freshwater gastropods: 9 families, 19 genera, 82 species.
  • Terrestrial gastropods: 26 families, 58 genera, 116 species.
  • Freshwater bivalves: 5 families, 11 genera, 31 species.

In total 30 families are listed, 88 genera and 229 species.

Freshwater gastropods

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Two shells of Marisa cornuarietis
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A shell of Pomacea glauca
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A shell of Pomacea interrupta
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A shell of Pomacea glauca orinocensis

Freshwater gastropods include:

Ampullariidae

Ancylidae

Hydrobiidae

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Over 30 individuals of Pyrgophorus coronatus

Lymnaeidae
There are two native and four introduced species of Lymnaeidae in Venezuela:[35]

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Two shells of Neritina puncticulata

Neritidae

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Two shells of Pachychilus laevissimus

Pachychilidae

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Two shells of Aplexa rivalis

Physidae

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Two views of a shell of Planorbella duryi

Planorbidae

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Two shells of Melanoides tuberculata

Thiaridae

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A shell of Achatina fulica

Land gastropods

Land gastropods include:

Achatinidae

Arionidae

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An active individual of Arion subfuscus

Bradybaenidae

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A shell of Bradybaena similaris

Clausiliidae

  • Bequaertinenia bequaerti (Arias, 1953)[12]
  • Columbina cyclostoma (Pfeiffer, 1849)[7][56]
  • Gonionenia dohrni (Pfeiffer, 1860)[7][56]
  • Nenia geayi (Jousseaume, 1849)[7][56]

Euconulidae

Ferussaciidae

  • Cecilioides acicula (Müller 1774) (introduced species)[18]
  • Cecilioides aperta (Swainson, 1840) (introduced species)[18]
  • Cecilioides consobrina (d’Orbigny, 1842)[10]

Helicidae

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Two shells of Helix pomatia

Helicinidae

  • Helicina microdina (Morelet, 1854)
    • Helicina microdina huberi Breure, 1976[57]
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A shell of Megalobulimus oblongus
  • Helicina tamsiana (Pfeiffer, 1850)
    • Helicina tamsiana appuni (Von Marten, 1873)[13]

Limacidae

Strophocheilidae

Neocyclotidae

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Three views of a shell of Poteria translucida

Amphibulimidae

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A shell of Dryptus marmoratus

Orthalicidae

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A shell of Oxistila maracaibensis
  • Auris sinuata (Albers, 1854)[13]
  • Oxystyla abducta (Shuttleworth, 1856)[6]
  • Oxystyla maracaibensis (Pfeiffer, 1899)[10]

Bulimulidae

  • Bulimulus dysoni Pfeiffer[10]
  • Bulimulus cacticolus Reeve[10]
  • Bulimulus constrictus Pfeiffer[10]
  • Bulimulus krebsianus Pilsbry, 1897[6]
  • Drymaeus extraneus (Haas, 1955) - synonym: Drymaeus griffini Haas, 1955[59]
  • Drymaeus grandensis (Pfeiffer, 1847)[6]
  • Drymaeus imperfectus (Guppy, 1866)[12]
  • Drymaeus meridanus (Pfeiffer)[10]
  • Drymaeus multilineatus (Say, 1825)[10]
  • Drymaeus rex Breure, 2009[59]
  • Drymaeus ruthveni Baker, 1926[6]
  • Drymaeus trigonostomus (Jonas, 1844)[6]
  • Drymaeus trigonostomus knorri (Pfeiffer, 1846)[6]
  • Drymaeus virgulatus (Férussac)[10]

Simpulopsidae

  • Simpulopsis magnus gg[13]

Odontostomidae

Pleurodontidae

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Two shells of Labyrinthus leucodon
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Two shells of Labyrinthus plicatus
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Two shells of Labyrinthus umbrus

Pupillidae

Sagdidae

Scolodontidae

  • Systrophia starkii (H. B. Baker)[10][13]

Systrophiidae

  • Drepanostomella pinchoti Pilsbry, 1930[13]

Spiraxidae

  • Pseudosubulina decussata Baker, 1926[6]
  • Pseudosubulina chaperi (Jousseaume 1889)[6]
  • Spiraxis blandi (Crosse, 1874)[26]

Streptaxidae

Subulinidae

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An empty shell and a whole but retracted individual of Subulina octona

Succineidae

  • Omalonyx felina Guppy 1878[6]
  • Omalonyx pattersonae Tillier, 1891[62]
  • Succinea tamsiana Pfeiffer[10][14]

Thysanophoridae

  • Thysanophora canalis (Pilsbry, 1910)[6]
  • Thysanophora plagiptycha (Shuttleworth, 1854)[6][10]
  • Thysanophora satanaensis (Pfeiffer, 1854)[6]

Urocoptidae

  • Brachypodella hanleyana (Pfeiffer, 1847)[7][10]
  • Brachypodella leucopleura (Menke, 1847)[7][10]
  • Brachypodella nidicostata Spence, 1920[7]
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A preserved specimen of Diplosolenodes occidentalis

Veronicellidae

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A live individual of Sarasinula plebeia

Vertiginidae

Xanthonychidae

  • Averellia coactiliata (Férrussac, 1838)[6]

Freshwater bivalves

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A whole shell of Castalia schombergiana
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A whole shell of Diplodon granosus
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Two whole shells of Paxydon syrmatophorus
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A whole shell of Tamsiella tamsiana

Corbiculidae

Corbulidae

  • Cyanocyclas cuneata Say, 1822[17]

Hyriidae

Mycetopodidae

  • Anodontites crispatus Bruguiere, 1792[17]
  • Anodontites elongatus (Swainson, 1823)[17]
  • Anodontites ensiformes (Spix, 1827)[16][17]
  • Anodontites guanarensis Marshall, 1928[16][17]
  • Anodontites infossa Baker, 1930[17]
  • Anodontites pittieri Marshall, 1922[16][17]
  • Anodontites schombergianus Sowerby, 1870[16][17]
  • Anodontites leotaudi (Guppy, 1866)[17]
  • Anodontites tenebricosus D’Orbigny, 1835[17]
  • Anodontites tortilis (Lea, 1852)[17]
  • Anodontites trapezeus (Spix, 1827)[17]
  • Anodontites trapesialis Lamarck, 1819[16][17][77]
  • Anodontites trigona (Spix, 1827)[16][17]
  • Mycetopoda pittieri Marshall, 1919[16][17][78]
  • Mycetopoda soleniformes D’Orbigny, 1835[17]
  • Tamsiella tamsiana Dunker, 1895[16][17][79]

Pisidiidae

  • Eupera bahiensis (Spix, 1827)[17]
  • Eupera modioliforme Anton, 1837[17]
  • Eupera simoni Jousseaume, 1889[17]
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See also

Lists of molluscs of surrounding countries:

Overseas:

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References

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