New Crab Species found in T.N.
10, Nov 2022
Prelims level : Environment Mains level : GS-III Environment & Biodiversity | Conservation, Environmental Pollution & Degradation, Eia
Why in News?
- Researchers have discovered a new species of crab in the mangroves of Parangipettai near the Vellar river estuary in the Cuddalore district of Tamil Nadu.
- The new species of estuarine crab discovered in Tamil Nadu has been named Pseudohelice annamalai as a mark of recognition of the “Annamalai University” which has completed 100 years of service in education and research.
- This is said to be the first-ever record of the genus, Pseudohelice in the intertidal areas and to date, only two species namely Pseudohelice subquadrata and Pseudohelice latreillii have been confirmed within this genus.
- The discovered species is found around the Indian subcontinent and the eastern Indian Ocean.
- Pseudohelice annamalai is marked by dark purple to dark grey colouring, with irregular light brown, yellowish brown, or white patches on the posterior carapace with light brown chelipeds.
- Pseudohelice annamalai inhabits muddy banks of mangroves and links the distribution gap between the western Indian Ocean and the western Pacific Ocean.
- The newly discovered species also provides additional evidence of the geographic isolation of the eastern Indian Ocean for some marine organisms.