Saturday, October 16, 2021

[Ichthyology • 2021] Glyptothorax rupiri • A New Species of Glyptothorax (Siluriformes: Sisoridae) from the Brahmaputra River Basin, Arunachal Pradesh, India

Glyptothorax rupiri
Kosygin, Singh & Rath, 2021

Glyptothorax rupiri, a new sisorid catfish, is described from the Brahmaputra River basin in Arunachal Pradesh, northeast India. It differs from its congeners in the Indian subcontinent by the following combination of characters: the presence of plicae on the ventral surface of the pectoral spine and first pelvic-fin ray; a posteriorly serrated dorsal-fin spine, its length 11.3–12.2% SL; body depth at anus 11.2–13.4% SL; a thoracic adhesive apparatus longer than broad, with a V-shaped median depression which opens posteriorly; an arrow-shaped anterior nuchal plate element; adipose-fin base length 10.9–12.6% SL; nasal barbel not reaching anterior orbital margin; 14–18 serrae on posterior margin of the pectoral-fin spine; body with two longitudinal pale-cream stripes; densely tuberculated skin; and the presence of numerous tubercles on the dorsal surface of pectoral and pelvic-fin rays.
Keywords: Pisces, Sisoridae, Glyptothorax rupiri, new species, India

Laishram Kosygin, Pratima Singh and Shibananda Rath. 2021. A New Species of Glyptothorax (Teleostei: Sisoridae) from the Brahmaputra River Basin, Arunachal Pradesh, India.  Zootaxa. 5023(2); 239-250. DOI: 10.11646/zootaxa.5023.2.4