Sunday, August 21, 2022

[Ichthyology • 2022] Pseudolaguvia meghalayaensis • A New Diminutive Sisorid Catfish of the Genus Pseudolaguvia (Siluriformes: Erethistidae) from Northeastern India

 

 Pseudolaguvia meghalayaensis
Lokeshwor & Marak, 2022


Abstract
Pseudolaguvia meghalayaensis, a new diminutive sisorid catfish, is described from the confluence of Rongkil and Rongdal streams (tributaries of the Brahmaputra River) in Meghalaya, India. It is distinguished from its congeners by a combination of characters: striae in thoracic adhesive apparatus strongly anastomosing and break up into small rounded plaques posteromedially, smooth anterior edge of dorsal spine, 8 branched pectoral-fin rays, supraoccipital spine not reaching nuchal shield, pectoral-fin length 17.1–20.1% standard length (SL), predorsal length 40.4–43.8% SL, preanal length 71.1–73.1% SL, body depth at anus 15.6–18.1% SL, anal-fin base length 12.2–12.7% SL, and post adipose fin length12.3–12.6% SL.

Keywords: Pisces, New Pseudolaguvia, Sisoridae, Rongkil stream, Rongdal stream, Brahmaputra River basin, Meghalaya


 Pseudolaguvia meghalayaensis:
 ZSI FF 9406, holotype, 28.7 mm SL; A. lateral, B. dorsal, and C. ventral.
ADBUMF 1610/2, paratype, 25.4 mm SL; D. lateral.


Yumnam Lokeshwor and Pringranchi Dokgre Marak. 2022. Pseudolaguvia meghalayaensis, A New Diminutive Sisorid Catfish (Teleostei: Siluriformes) from Northeastern India. Zootaxa. 5175(3); 367-376. DOI: 10.11646/zootaxa.5175.3.3