List of non-marine molluscs of Trinidad and Tobago explained

The non-marine molluscs of the republic of Trinidad and Tobago (which comprises two West Indian islands) are a part of the molluscan fauna of Trinidad and Tobago, part of the Natural history of Trinidad and Tobago.

Starting in the 1860s, the terrestrial and freshwater molluscs of Trinidad and Tobago have been fairly well studied. Thomas Bland published the first paper mentioning terrestrial molluscs in 1861.^[1] Robert John Lechmere Guppy discovered and identified many more species from 1864 onwards, and along with Edgar Albert Smith was responsible for the earliest comprehensive species lists. The list here includes all the non-marine mollusks found in Trinidad and Tobago's ecosystem including native, introduced and invasive species alike.

Freshwater gastropods

Freshwater gastropods include:

Ampullariidae

• Marisa cornuarietis (Linnaeus, 1758)^{[2] [3]}
• Pomacea glauca (Linné, 1758)^[2]
• Pomacea urceus (Müller, 1774)^[2]

Ancylidae

• Hebetancylus excentricus (Morelet, 1851)

Hydrobiidae

• Pyrgophorus parvulus (Guilding, 1828)

Physidae

• Physella cubensis (Pfeiffer, 1839)

Planorbidae

• Tropicorbis pallidus (C.B. Adams, 1846)

Thiaridae

• Melanoides tuberculata (O. F. Müller, 1774)^[4]

Land gastropods

Land gastropods include:

Helicinidae

• Helicina nemoralis Guppy, 1866^[2]
• Helicina dysoni (L. Pfeiffer, 1849)^[2]
• Lucidella ignicoma (Guppy, 1868)^[2] Endemic to Trinidad
• Lucidella lirata (L. Pfeiffer, 1847)^[2]

Neocyclotidae

• Aperostoma translucidum trinitense (Guppy, 1864)^[2]
• Neocyclotus rugatus (Guppy, 1864)^[2]

Diplommatinidae

• Adelopoma occidentale (Guppy, 1872)^[2]

Annulariidae

• Halotudora aripensis (Guppy, 1864)^[2] Endemic to Trinidad

Truncatellidae

• Truncatella reclusa (Guppy, 1871)^[2] Endemic to Trinidad

Veronicellidae

• Diplosolenodea bielenbergi (Semper, 1885)
• Sarasinula plebeia (Fischer, 1868)

Achatinidae

• Lissachatina fulica (Bowdich, 1822) Invasive
• Allopeas gracile (Hutton, 1834)
• Allopeas micra (d’Orbigny, 1835)^[2]
• Beckianum beckianum (L. Pfeiffer, 1846)^[2]
• Leptopeas simplex (Guppy, 1868)^[2]
• Leptinaria unilamellata (d’Orbigny, 1835)^[2]
• Leptinaria urichi (E.A. Smith, 1896)^[2] Endemic to Trinidad
• Stenogyra octogyra (L. Pfeiffer, 1856)^[2]
• Subulina octona (Bruguière, 1798)^[2]

Ferussaciidae

• Karolus consobrinus (d’Orbigny, 1841)^[2]

Streptaxidae

• Gulella bicolor (Hutton, 1834)^[2] Introduced
• Streptartemon glaber (L. Pfeiffer, 1850)^[2]
• Streptostele musaecola (Morelet, 1860) Introduced

Succineidae

• Succinea sp.
• Omalonyx unguis (d'Orbigny, 1836)^[2]

Vertiginidae

• Bothriopupa conoidea (L. Pfeiffer, 1853)
• Bothriopupa tenuidens (C.B. Adams, 1845)^[5]
• Sterkia eyriesii (Drouet, 1859)

Gastrocoptidae

• Gastrocopta barbadensis (L. Pfeiffer, 1853)^[2]
• Gastrocopta iheringi (Suter, 1900)
• Gastrocopta pellucida (L. Pfeiffer, 1840)
• Gastrocopta servilis riisei (L. Pfeiffer, 1852)^[5]
• Gastrocopta rupicola marginalba (L. Pfeiffer, 1840)^[5]
• Gastrocopta geminidens (Pilsbry, 1917)^[5]

Valloniidae

• Pupisoma dioscoricola (C. B. Adams, 1845)

Amphibulimidae

• Plekocheilus glaber (Gmelin, 1791)^[2]

Bulimulidae

• Bulimulus sp.
• Drymaeus aureolus (Guppy, 1866) Endemic to Trinidad
• Drymaeus broadwayi (E.A. Smith, 1896)^[2] Endemic to Trinidad
• Drymaeus imperfectus (Guppy, 1866) Endemic to Trinidad
• Drymaeus mossi (E.A. Smith, 1896)^[2] Endemic to Trinidad
• Drymaeus rawsoni (Guppy, 1871)^[2] Endemic to Tobago
• Drymaeus vincentinus (L. Pfeiffer, 1846)^[2]
• Protoglyptus pilosus (Guppy, 1871)^[2]

Orthalicidae

• Orthalicus undatus (Bruguière, 1792)^[2]

Simpulopsidae

• Simpulopsis corrugata Guppy, 1866

Urocoptidae

• Brachypodella trinitaria (L. Pfeiffer, 1860)^[2]
• Brachypodella oropuchensis Spence (Possible synonym of above)

Scolodontidae

• Happia guildingi (Bland, 1865)^[2]
• Miradiscops implicans (Guppy, 1868)
• Miradiscops lunti (E.A. Smith, 1898)
• Systrophia alicea (Guppy, 1871)^[2]
• Tamayoa decolorata (Drouët, 1859)
• Tamayoa trinitaria (E.A. Smith, 1898)

Gastrodontidae

• Pseudohyalina umbratilis (Guppy, 1868)^[2]

Philomycidae

• Pallifera sp.

Euconulidae

• Guppya gundlachi (L. Pfeiffer, 1840)
• Habroconus ernsti (Jousseaume, 1889)
• Habroconus cassiquiensis (L. Pfeiffer, 1853)^[2]

Helicarionidae

• Ovachlamys fulgens (Gude, 1900) Introduced

Strophocheilidae

• Megalobulimus oblongus (Müller, 1774)^[2]
• Megalobulimus oblongus var. tobagoensis (Pilsbry, 1895)

Charopidae

• Radioconus bactricola (Guppy, 1868)^[2]
• Radiodiscus hollidayi Rutherford, 2020

Trichodisccinidae

• Trichodiscina coactiliata (Férussac, 1838)^[2]

Thysanophoridae

• Lyroconus plagioptycha (Shuttleworth, 1854)

Freshwater bivalves

Freshwater bivalves include:Mycetopodidae

• Anodontites leotaudi (Guppy, 1864)^[2]
• Mycetopoda siliquosa (Spix, 1827)^[6]

Sphaeriidae (=Pisidiidae)

• Pisidium punctiferum (Guppy, 1867)^[7]
• Eupera cubensis (Prime, 1865)^[8]

See also

Lists of non-marine molluscs of nearby countries and islands:

• List of non-marine molluscs of Venezuela
• List of non-marine molluscs of Grenada
• List of non-marine molluscs of Barbados
• List of non-marine molluscs of Curaçao
• List of non-marine molluscs of Aruba
• List of non-marine molluscs of Guyana

Notes and References

1. Bland T. (1861). On the Geographical Distribution of the Genera and Species of Land Shells of the West India Islands with a Catalogue of the species of each island. The Annals of The Lyceum of Natural History, New York. Vol. VII.
2. Smith E.A. (1896) A List of the Land and Freshwater Mollusca of Trinidad. Journal of Conchlogy 8:231-251.
3. Geijkes, D.C. & Pain, T. (1957): Suriname freshwater snail of the genus Pomacea. Studies on the Fauna of Suriname and others Guyanas, 1(3):41-48 pt.IX-X.
4. Bacon P.R. (1978) Notes on some freshwater molluscs from Nariva Swamp, Trinidad. The Living World Journal 1978:14-15.
5. Haas F. (1960) Caribbean Land Molluscs: Vertiginidae. Studies on the Fauna of Curaçao and other Caribbean Islands. 10:1-17.
6. Mohammed R.S., Nieweg D.C., Rostant W.G. and Badal P (2008) Collections of Freshwater mussel shells of Anodontites sp. and Mycetopoda sp. in rivers of south-central Trinidad, West Indies. The Living World Journal 2008:76-77.
7. [Robert John Lechmere Guppy|Guppy R. J. L.]
8. Bass D. (2003) A Survey of Freshwater Macroinvertebrates in Tobago. The Living World Journal 2003:64-68.