Thursday, August 30, 2018

[Crustacea • 2018] Eurindicus bhugarbha • The Discovery of Euryrhynchidae (Decapoda) in India, with the Description of A New Genus and Species

 Eurindicus bhugarbha
de Grave, Arjun & Raghavan, 2018

A new genus and species of Euryrhynchidae is described from Kerala, India. This freshwater shrimp family was previously only known from northern South America and West Africa. Although the inclusion of the genus in Euryrhynchidae is unequivocal (e.g. shape of the accessory ramus of the antennular flagellum, frontal margin of the carapace, telson ornamentation), the presence of a number of unique characters makes the relative placement of the genus within the family unclear, but likely basal to the other genera. The new genus can be easily distinguished from all others within the family by these characters, e.g. the upper antennular flagellum and its accessory ramus being joined over three divisions, the presence of a reduced carpo-propodal brush and a well-developed branchiostegal groove.

Keywords: Crustacea, Euryrhynchidae, systematics, subterranean, India, new genus

Order Decapoda Latreille, 1802
Infraorder Caridea Dana, 1852
Family Euryrhynchidae Holthuis, 1950

Eurindicus bhugarbha gen nov., sp. nov. Holotype, male (pocl 3.2 mm), BNHS CAR 1. 
 whole animal shortly after capture.

Eurindicus gen. nov. 

Type species. Eurindicus bhugarbha sp. nov., by present designation and monotypy.

Etymology. Eurindicus is an arbitrary combination of ‘Eur-’ the first three letters of the family Euryrhynchidae, and ‘-indicus’, from India, based on the geographic distribution of the genus, this being the first record of the family in India; gender masculine.

Eurindicus bhugarbha sp. nov.

Etymology. The species name ‘bhugarbha’ means underground in Malayalam, the native language spoken in the State of Kerala in southern India, used as a noun in apposition.

 Sammy De Grave, Charambilly Purushothaman Arjun and Rajeev Raghavan. 2018. The Discovery of Euryrhynchidae (Crustacea: Decapoda) in India, with the Description of A New Genus and Species. Zootaxa. 4462(3); 367–378.  DOI:  10.11646/zootaxa.4462.3.4