Georissa

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Georissa
Georissa shikokuensis 001.jpg
Georissa shikokuensis
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Neritimorpha
Order: Cycloneritida
Family: Hydrocenidae
Genus: Georissa
Blanford, 1864 [1]

Georissa is a genus of minute land snails, terrestrial gastropod mollusks in the family Hydrocenidae. Although the species are best known for living on the surface of limestone rocks, they are often also found in and on the vegetation and on non-calcareous rocks. One species, Georissa filiasaulae , is cavernicolous. It is only known from two caves in the Sepulut area of Sabah, Malaysian Borneo, where its above-ground sister species, Georissa saulae , inhabits the rocks outside of the cave, and is connected to the cave snail via narrow zones of hybridization at the cave entrances. Possibly, G. filiasaulae has evolved without ever having been fully separated from its ancestor, a process known as speciation-with-gene-flow. [2] [3]

Species

Species within the genus Georissa include:

Related Research Articles

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<i>Diplommatina</i> Genus of gastropods

Diplommatina is a genus of land snails with an operculum, terrestrial gastropod mollusks in the family Diplommatinidae.

<i>Japonia</i> Genus of gastropods

Japonia is a genus of land snails with opercula, terrestrial gastropods in the subfamily Cyclophorinae of the family Cyclophoridae.

<i>Kaliella</i> Genus of gastropods

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<i>Lamprocystis</i> Genus of gastropods

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<i>Omphalotropis</i> Genus of gastropods

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<i>Palaina</i> Genus of gastropods

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Pupina is a genus of land snails with an operculum, terrestrial gastropod mollusks in the subfamily Pupillinae of the family Pupinidae.

<i>Diaphera</i> Genus of gastropods

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Ditropopsis is a genus of small land snails with a gill and an operculum, terrestrial gastropod mollusks in the family Cyclophoridae.

<i>Georissa saulae</i> Species of gastropod

Georissa saulae is a species of a minute land snail that have an operculum, a terrestrial gastropod mollusk in the family Hydrocenidae.

<i>Georissa filiasaulae</i> Species of gastropod

Georissa filiasaulae is a species of a minute land snail that have an operculum, terrestrial gastropod mollusk in the family Hydrocenidae.

<i>Lagocheilus</i> Genus of gastropods

Lagocheilus is a genus of gastropods in the family Cyclophoridae.

<i>Plectostoma</i> Genus of gastropods

Plectostoma is a genus of air-breathing land snails in the family Diplommatinidae.

<i>Geotrochus</i> Genus of gastropods

Geotrochus is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Trochomorphidae.

<i>Microcystina</i> Genus of gastropods

Microcystina is a large genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Macrochlamydinae of the family Ariophantidae.

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References

  1. ↑ Blanford W. T. (1864). "On the Classification of the Cyclostomacea of Eastern Asia". Annals and Magazine of Natural History (3)13: 441-465, page 463.
  2. ↑ Schilthuizen M., Rutten E. J. M. & Haase M. (2012). "Small-scale genetic structuring in a tropical cave snail and admixture with its above-ground sister species". Biological Journal of the Linnean Society 105: 727-740. doi:10.1111/j.1095-8312.2011.01835.x
  3. ↑ Schilthuizen M., Cabanban A. S. & Haase M. (2005). "Possible speciation with gene-flow in tropical cave snails". Journal of Zoological Systematics 43: 133-138. doi : 10.1111/j.1439-0469.2004.00289.133–138.
  4. 1 2 3 4 5 6 Khalik, Mohd Zacaery; Hendriks, Kasper; Vermeulen, Jaap J.; Schilthuizen, Menno (9 July 2018). "A molecular and conchological dissection of the "scaly" Georissa of Malaysian Borneo (Gastropoda, Neritimorpha, Hydrocenidae)". ZooKeys (773): 1–55. Bibcode:2018ZooK..773....1K. doi: 10.3897/zookeys.773.24878 . PMC   6048177 . PMID   30026659.
  5. 1 2 Haase M. & Schilthuizen M. (2007). "A new Georissa (Gastropoda: Neritopsina: Hydrocenidae) from a limestone cave in Malaysian Borneo". Journal of Molluscan Studies73(3): 215-221. doi : 10.1093/mollus/eym020.
  6. ↑ Noseworthy R. G., Lim N.-R. & Choi K.-S. (2007). "A Catalogue of the Mollusks of Jeju Island, South Korea". Korean Journal of Malacology 23(1): 65-104. PDF.
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