Salangathelphusa peractio sp. n. A, B paratype male (12.0 × 10.6 mm) (ZRC 2017.209), Langkawi C, D paratype female (21.7 × 17.3 mm) (ZRC 2017.210), Langkawi. A, C overall habitus B male anterior thoracic sternum and pleon D female anterior thoracic sternum and pleon E female sternopleonal cavity showing vulvae.

 
 
  Part of: Ng PKL (2017) Salangathelphusa peractio, a new species of lowland freshwater crab (Crustacea, Brachyura, Gecarcinucidae) from Pulau Langkawi, Peninsular Malaysia. ZooKeys 711: 53-65. https://doi.org/10.3897/zookeys.711.20621