- Source: Georissa
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.
Species
Species within the genus Georissa include:
Georissa anyiensis Khalik, Hendriks, Vermeulen & Schilthuizen, 2018
Georissa bangueyensis E. A. Smith, 1895
Georissa bauensis Khalik, Hendriks, Vermeulen & Schilthuizen, 2018
Georissa biangulata Quadras & Möllendorff, 1894
Georissa borneensis E. A. Smith, 1895
Georissa elegans Quadras & Möllendorff, 1894
Georissa everetti E. A. Smith, 1895
Georissa filiasaulae Haase & Schilthuizen, 2007
Georissa gomantongensis E.A. Smith, 1894
Georissa hadra Thompson & Dance, 1983
Georissa hosei Godwin-Austen, 1889
Georissa japonica Pilsbry, 1900
Georissa kinabatanganensis Khalik, Hendriks, Vermeulen & Schilthuizen, 2018
Georissa kobelti Gredler, 1902
Georissa laevigata Quadras & Möllendorff, 1894
Georissa laseroni (Iredale, 1937)
Georissa mawsmaiensis Das & Aravind, 2021
Georissa monterosatiana Godwin-Austen & Neville, 1879
Georissa muluensis Khalik, Hendriks, Vermeulen & Schilthuizen, 2018
Georissa niahensis Godwin-Austen, 1889
Georissa pachysoma Vermeulen & Junau, 2007
Georissa purchasi
Georissa pyrrhoderma Thompson & Dance 1983
Georissa pyxis (Benson, 1856) - type species of the genus Georissa
Georissa rufula von Möllendorf, 1900
Georissa saulae (van Benthem-Jutting, 1966)
Georissa scalinella (van Benthem-Jutting, 1966)
Georissa semisculpta
Georissa sepulutensis Khalik, Hendriks, Vermeulen & Schilthuizen, 2018
Georissa shikokuensis Amano, 1939
Georissa silaburensis Khalik, Hendriks, Vermeulen & Schilthuizen, 2018
Georissa similis E.A. Smith, 1894
Georissa vesta Thompson & Dance, 1983
Georissa williamsi Godwin-Austen, 1889 (including Georissa hungerfordi)
References
External links
Media related to Georissa at Wikimedia Commons