Parathelphusidae

	Parathelphusidae ''Arachnothelphusa rhadamanthysi''Cave crab, Borneo Parathelphusinae is a subfamily of freshwater crabs, which was formerly placed in the family Parathelphusidae; they are mainly found in South and Southeast Asia, but also found elsewhere in Asia and in Australia . The family is now considered as a junior synonym of the family Gecarcinucidae. The Parathelphusinae inhabit rivers, lakes and rice paddies. Some species, for example from the genus ''Somanniathelphusa'', are locally important as food, particularly in Thailand, Mizoram (India), etc. where they are an important ingredient in ''som tam''. Some others are very rare and close to extinction such as the Parathelphusa reticulata, Singapore's Swamp Forest Crab. Genera in this family are: '' Adelaena'' '' Arachnothelphusa'' '' Austrothelphusa'' '' Bakousa'' '' Bassiathelphusa'' '' Ceylonthelphusa'' '' Clinothelphusa'' '' Coccusa'' '' Currothelphusa'' '' Esanthelphusa'' '' Geelvinkia'' '' Geithusa'' '' Heterothel ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
picture info	Freshwater Crab Around 1,300 species of freshwater crabs are distributed throughout the tropics and subtropics, divided among eight families. They show direct development and maternal care of a small number of offspring, in contrast to marine crabs, which release thousands of planktonic larvae. This limits the dispersal abilities of freshwater crabs, so they tend to be endemic to small areas. As a result, a large proportion are threatened with extinction. Systematics More than 1,300 described species of freshwater crabs are known, out of a total of 6,700 species of crabs across all environments. The total number of species of freshwater crabs, including undescribed species, is thought to be up to 65% higher, potentially up to 2,155 species, although most of the additional species are currently unknown to science. They belong to eight families, each with a limited distribution, although various crabs from other families are also able to tolerate freshwater conditions ( euryhaline) or are secon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Gecarcinucidae The Gecarcinucidae are a family of true freshwater crabs. The family Parathelphusidae is now demoted to the rank of subfamily, as the Parathelphusinae, within the Gecarcinucidae. "Family" Parathelphusidae is now considered as a junior synonym. Taxonomy The Gecarcinucidae are thought to have originated in the Indian subcontinent when it was an island continent in the Paleogene, despite not being of ancient Gondwanan origins themselves (unlike other lineages that are thought to have originated in Insular India). Divergence estimates indicate that the Gecarcinucidae originate from Southeast Asian ancestors that dispersed to India during the middle Eocene, before India collided with Asia. This is thought to have occurred due to India drifting close enough to Southeast Asia to allow for biotic exchange between both regions. As the Gecarcinucidae are a freshwater group that could not disperse via marine habitats, this indicates that temporary land bridges may have formed in the Eoce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Ceylonthelphusa ''Ceylonthelphusa'' is a genus of freshwater crabs endemic to Sri Lanka, where they live in moist lowland forests, swamps and rivers. Many of the species are on the IUCN Red List of threatened species, with the greatest risk factor being habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... ''Ceylonthelphusa'' contains these species: '' C. alpina'' Bahir & Ng, 2005 '' C. armata'' (Ng, 1995) ''C. austrina'' (Alcock, 1909) '' C. callista'' (Ng, 1995) ''C. cavatrix'' (Bahir, 1998) ''C. diva'' Bahir & Ng, 2005 ''C. durrelli'' Bahir & Ng, 2005 ''C. kandambyi'' Bahir, 1999 ''C. kotagama'' (Bahir, 1998) ''C. nana'' Bahir, 1999 ''C. nata'' Ng & Tay, 2001 ''C. orthos'' Ng & Tay, 2001 ''C. rugosa'' (Kingsley, 1880) ''C. sanguinea'' (Ng, 1995) ' ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
picture info	Cave Crab (Arachnothelphusa Rhadamanthysi) A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as ''speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorganisms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Mahatha ''Mahatha'' is a genus of freshwater crabs endemic to Sri Lanka. Four of the six species are critically endangered due to habitat loss, and two are listed as Least Concern on the IUCN Red List. Species ''Mahatha adonis'' ''Mahatha adonis'' is a widespread species, known from the Mahaweli Basin, Knuckles Massif and Monaragala. It is considered a species of Least Concern by the IUCN. ''Mahatha helaya'' ''Mahatha helaya'' is only known from its type locality, near Kalupahana on the main Colombo-Haputale road, and is therefore considered critically endangered by the IUCN. The specific epithet ''helaya'' comes from the Sinhalese word for an inhabitant of Sri Lanka. ''Mahatha iora'' ''Mahatha iora'' is only known from its type locality, near the Dunhinda Falls, and is therefore considered critically endangered by the IUCN. ''Mahatha lacuna'' ''Mahatha lacuna'' is only known from its type locality, near Galle, and is therefore considered critically endangered by the IUCN. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Holthuisana ''Holthuisana'' is a genus of crabs belonging to the family Gecarcinucidae. The species of this genus are found in Australia. Species: ''Holthuisana alba'' ''Holthuisana beauforti'' ''Holthuisana biroi'' ''Holthuisana boesemani'' ''Holthuisana briggsi'' ''Holthuisana festiva'' ''Holthuisana lipkei'' ''Holthuisana loriae'' ''Holthuisana subconvexa'' ''Holthuisana tikus'' ''Holthuisana vanheurni'' ''Holthuisana wollastoni'' References {{Taxonbar, from=Q18579856 Gecarcinucidae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Esanthelphusa ''Esanthelphusa'' is a genus of freshwater crabs, found in South-East Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical south-eastern region of Asia, consisting of the regions that are situated south of mainland .... Species * '' Esanthelphusa chiangmai'' (Ng & Naiyanetr, 1993) * '' Esanthelphusa denchaii'' (Naiyanetr, 1984) * '' Esanthelphusa dugasti'' (Rathbun, 1902): Laos, Thailand, Vietnam * '' Esanthelphusa fangensis'' (Naiyanetr, 1987) * '' Esanthelphusa nani'' (Naiyanetr, 1984) * '' Esanthelphusa nimoafi'' Yeo, 2004 * '' Esanthelphusa phetchaburi'' (Ng & Naiyanetr, 1993) * '' Esanthelphusa prolatus'' (Rathbun, 1902): Vietnam References External links {{Taxonbar, from=Q18592369 Gecarcinucidae Freshwater crustaceans of Asia ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]