Abstract
Pterocryptis subrisa, a new species of silurid catfish from the Kaladan River drainage in northeastern India, is described in this study. It can be distinguished from congeners by the unique combination of the following characters: supralabial fold extending posteriorly beyond vertical through posterior orbital margin; nearly circular eye; head length 17.6–19.6% SL; head depth 10.6–11.9% SL; dorsal-fin height 2.6–4.7% SL; 2 dorsal-fin rays; pectoral-fin length 11.8–14.0% SL; body depth at anus 14.4–16.7% SL; caudal peduncle depth 6.8–8.5% SL; 66–75 anal-fin rays; confluent anal and caudal fins separated by deep notch; 17 principal caudal-fin rays; and 57 vertebrae. The generic status of Pterocryptis taytayensis is discussed, with this species being reassigned to Ompok.
References
Bornbusch, A.H. (1991) Redescription and reclassification of the silurid catfish Apodoglanis furnessi Fowler (Siluriformes: Siluridae), with diagnoses of three intrafamilial silurid subgroups. Copeia, 1991, 1070–1084.
https://doi.org/10.2307/1446102Bornbusch, A.H. (1995) Phylogenetic relationships within the Eurasian catfish family Siluridae (Pisces: Siluriformes), with comments on generic validities and biogeography. Zoological Journal of the Linnean Society, 115, 1–46.
https://doi.org/10.1111/j.1096-3642.1995.tb02322.xFerraris, C.J. (2007) Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa, 1418 (1), 1–628.
https://doi.org/10.11646/zootaxa.1418.1.1Gopi, K.C. & Radhakrishnan, C. (2001) The status of Silurus wynaadensis Day (Siluridae: Pisces) with a note on its bionomics. Zoos' Print Journal, 16, 580–582.
https://doi.org/10.11609/JoTT.ZPJ.16.9.580-2Ng, H.H. (1999) Pterocryptis inusitata, a new species of silurid catfish from Laos (Teleostei: Siluriformes). Ichthyological Exploration of Freshwaters, 10, 371–374.
Ng, H.H. & Freyhof, J. (2001) A review of the catfish genus Pterocryptis (Siluridae) in Vietnam, with the description of two new species. Journal of Fish Biology, 59, 624–644.
https://doi.org/10.1111/j.1095-8649.2001.tb02367.xNg, H.H. & Chan, B.P.-L. (2005) Revalidation and redescription of Pterocryptis anomala (Herre, 1933), a catfish (Teleostei: Siluridae) from southern China. Zootaxa, 1060, 51–64.
https://doi.org/10.11646/zootaxa.1060.1.4Sabaj, M.H. (2016) Standard symbolic codes for institutional resource collections in herpetology and ichthyology: an online reference. Version 6.5 (16 August 2016). American Society of Ichthyologists and Herpetologists, Washington, DC. Available from: http://www.asih.org/resources/standard-symbolic-codes-institutional-resource-collections-herpetology-ichthyology (accessed 19 June 2018)
Vishwanath, W. & Nebeshwar, K. (2009) Redescription of siluroid catfish Pterocryptis barakensis Vishwanath & Nebeshwar (Siluriformes: Siluridae). Journal of Threatened Taxa, 1, 425–428.
https://doi.org/10.11609/JoTT.o1795.425-8