Ceylonthelphusa alpina is a species of freshwater crabs in the family Gecarcinucidae. The species is endemic to Sri Lanka, and is classed as an endangered due to habitat degradation.
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. Ceylonthelphusa contains these species:
Ceylonthelphusa diva is a species of decapod in the family Gecarcinucidae.
Ceylonthelphusa durrelli is a species of decapod in the family Gecarcinucidae. It is native to Central Province, Sri Lanka.
Ceylonthelphusa kotagama is a species of decapod in the family Gecarcinucidae.
Ceylonthelphusa nata is a species of crab in the family Gecarcinucidae.
Ceylonthelphusa orthos is a species of crab in the family Gecarcinucidae.
Ceylonthelphusa rugosa is a species of crab in the family Gecarcinucidae.
Ceylonthelphusa sanguinea is a species of decapod in the family Gecarcinucidae.
Ceylonthelphusa savitriae is a species of decapod in the family Gecarcinucidae.
Ceylonthelphusa sentosa is a species of decapod in the family Gecarcinucidae.
Ceylonthelphusa soror is a species of decapod in the family Gecarcinucidae.
Ceylonthelphusa venusta is a species of crab in the family Gecarcinucidae.
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.
Spiralothelphusa fernandoi is a species of crab in the family Gecarcinucidae.
Spiralothelphusa parvula is a species of decapod in the family Gecarcinucidae.
Ceylonthelphusa cavatrix is a species of decapod in the family Gecarcinucidae.
