Mahatha

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Cladus: Pancrustacea
Superclassis: Multicrustacea
Classis: Malacostraca
Subclassis: Eumalacostraca
Superordo: Eucarida
Ordo: Decapoda
Subordo: Pleocyemata
Infraordo: Brachyura
Sectio: Eubrachyura
Subsectio: Heterotremata
Superfamilia: Gecarcinucoidea

Familia: Parathelphusidae
Genus: Mahatha
Species (6): M. adonis – M. helaya – M. iora – M. lacuna – M. ornatipes – M. regina
Name

Mahatha Ng & Tay, 2001
References

Bahir, M.M. & Ng, P.K.L. 2005. Descriptions of ten new species of freshwater crabs (Crustacea: Brachyura: Parathelphusidae: Ceylonthelphusa, Mahata, Perbrinckia) from Sri Lanka. The Raffles Bulletin of Zoology Supplement 12: 47–75. PDF. Reference page.

Mahatha is a genus of freshwater crabs endemic to Sri Lanka. Four of the six species are critically endangered due to habitat loss,[1] 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.[2]
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.[3] The specific epithet helaya comes from the Sinhalese word for an inhabitant of Sri Lanka.[4]
Mahatha iora

Mahatha iora is only known from its type locality, near the Dunhinda Falls, and is therefore considered critically endangered by the IUCN.[5]
Mahatha lacuna

Mahatha lacuna is only known from its type locality, near Galle, and is therefore considered critically endangered by the IUCN.[6] The specific epithet lacuna, from the Latin for "hole", refers to the deep burrow in which the species was found.[4]
Mahatha ornatipes

Mahatha ornatipes was originally described in 1915 by Roux as Paratelphusa ornatipes, and was later described as Ceylonthelphusa inflatissima Bott, 1970. It is widespread in the wet zone of Sri Lanka and is considered a species of Least Concern by the IUCN.[7]
Mahatha regina

Mahatha regina is only known from its type locality, near Pundaluoya, and is therefore considered critically endangered by the IUCN.[8] The specific epithet regina (Latin for "queen") refers to the species' "regal appearance".[4]
References

IUCN Sri Lanka & The Ministry of Environment and Natural Resources (2007). The 2007 Red List of Threatened Fauna and Flora of Sri Lanka. Colombo, Sri Lanka. ISBN 978-955-8177-63-1.
Esser, L.J.; Cumberlidge, N. (2008). "Mahatha adonis". IUCN Red List of Threatened Species. 2008: e.T61707A12538797. doi:10.2305/IUCN.UK.2008.RLTS.T61707A12538797.en. Retrieved 12 November 2021.
Bahir, M.M.; Ng Kee Lin, P.; Crandall, K.A.; Pethiyagoda, R.; Cumberlidge, N. (2008). "Mahatha helaya". IUCN Red List of Threatened Species. 2008: e.T61708A12539189. doi:10.2305/IUCN.UK.2008.RLTS.T61708A12539189.en. Retrieved 12 November 2021.
Mohomed M. Bahir & Peter K. L. Ng (2005). "Descriptions of ten new species of freshwater crabs (Crustacea: Brachyura: Parathelphusida: Ceylonthelphusa, Mahatha, Perbrinckia) from Sri Lanka" (PDF). Raffles Bulletin of Zoology. Suppl. 12: 47–75.
Bahir, M.M.; Ng Kee Lin, P.; Crandall, K.A.; Pethiyagoda, R.; Cumberlidge, N. (2008). "Mahatha iora". IUCN Red List of Threatened Species. 2008: e.T61709A12539587. doi:10.2305/IUCN.UK.2008.RLTS.T61709A12539587.en. Retrieved 12 November 2021.
Bahir, M.M.; Ng Kee Lin, P.; Crandall, K.A.; Pethiyagoda, R.; Cumberlidge, N. (2008). "Mahatha lacuna". IUCN Red List of Threatened Species. 2008: e.T61710A12540209. doi:10.2305/IUCN.UK.2008.RLTS.T61710A12540209.en. Retrieved 12 November 2021.
Bahir, M.M.; Ng Kee Lin, P.; Pethiyagoda, R.; Crandall, K.A.; Cumberlidge, N. (2008). "Mahatha regina". IUCN Red List of Threatened Species. 2008: e.T61712A12541080. doi:10.2305/IUCN.UK.2008.RLTS.T61712A12541080.en. Retrieved 12 November 2021.
Bahir, M.M.; Ng Kee Lin, P.; Crandall, K.A.; Pethiyagoda, R.; Cumberlidge, N. (2008). "Mahatha ornatipes". IUCN Red List of Threatened Species. 2008: e.T61711A12540713. doi:10.2305/IUCN.UK.2008.RLTS.T61711A12540713.en. Retrieved 12 November 2021.