Monday, October 4, 2021

[Ichthyology • 2021] Garra jaldhakaensis • A New Cyprinid Fish (Teleostei: Cyprinidae) from West Bengal, India


Garra jaldhakaensis 
Kosygin, Shangningam, Singh & Das, 2021


Abstract
Garra jaldhakaensis sp. nov. (Teleostei: Cyprinidae) is described from the Jaldhaka River, Kalimpong district, West Bengal, India. The new species is distinguished from all its congeners in the Indian sub-continent in having a combination of the following characters: a prominent thick unilobed proboscis, protruding downward above the transverse groove; 10–11 predorsal scales, 33 lateral line scales and 16 circumpeduncular scales.

Keywords: Brahmaputra Basin, Cyprinidae, India, New Species

Garra jaldhakaensis sp. nov., holotype showing
a. Snout; b oromandibular morphology

Garra jaldhakaensis sp. nov., holotype,
a. dorsal, b. lateral, c. ventral view.

Garra jaldhakaensis sp. nov.

Diagnosis: Garra jaldhakaensis sp. nov., a member of the proboscis and transverse lobe species group, is distinguished from all congeners in the Ganga-Brahmaputra River drainage in having the following combination of characters: snout with a prominent tuberculated unilobed proboscis protruding downward above the transverse groove and transverse lobe covered with 16–25 medium-to large-sized multicuspid tubercles; 10–11 predorsal scales, 33 lateral line scales, 16 circumpeduncular scales, scaled chest and belly. 

Distribution: Garra jaldhakaensis sp. nov. is presently known only from the type locality Jaldhaka River near Jhalong, Kalimpong district, West Bengal, India.

Etymology: The species is named after the type locality, Jaldhaka River, West Bengal, India.


Laishram Kosygin, Bungdon Shangningam, Pratima Singh and Ujjal Das. 2021. Garra jaldhakaensis, A New Cyprinid Fish (Teleostei: Cyprinidae) from West Bengal, India. Records of the Zoological Survey of India: A Journal of Indian Zoology [Rec. zool. Surv. India]. 121(3); 325–331. DOI: 10.26515/rzsi/v121/i3/2021/158415