Bunocephalus hertzi, a new banjo catfish from the upper Rio Parana basin, Brazil (Siluriformes: Aspredinidae), with the redescription of Bunocephalus larai Ihering, 1930

Author(s)

Esguicero, Andre L. H. ^{[1, 2]} ; Castro, Ricardo M. C. ^[1] ; Pereira, Thiago N. A. ^[3]

Affiliation

^[1] Univ Sao Paulo, FFCLRP, LIRP, Av Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil

^[2] Univ Sao Paulo, FFCLRP, Programa Posgrad Biol Comparada, Dept Biol, Ribeirao Preto, SP - Brazil

^[3] Univ Fed Tocantins, Lab Ictiol Sistemat, POB 136, BR-77500000 Porto Nacl, TO - Brazil

• Document type: Journal article
• Source: Zootaxa; v. 4742, n. 1, p. 105-116, FEB 19 2020.
• Web of Science Citations: 0

Abstract

Bunocephalus hertzi, new species, is described from two tributaries of the upper Rio Parana basin. Because the type series of B. larai (the only other species of Bunocephalus in the basin) is lost, a redescription of B. larai is also provided herein. Bunocephalus larai and B. hertzi can be distinguished from all its congeners, except B. minerim, by the absence of an epiphyseal bar (vs. present). From B. minerim, both species can be distinguished by the presence of 10 principal caudal-fin rays (vs. 9). Bunocephalus hertzi can be differentiated from B. larai by the longer coracoid process size (11.9-16.2% vs. 6.7-9.8% SL), shorter maxillary barbel (just reaching the pectoral fin origin; 54.6-67.4% vs. 73.7-84.6% HL) and skull ornamentation represented by five bony protuberances between the posterior end of the occipital and the origin of the dorsal fin (vs. four bony protuberances). (AU)

• FAPESP's process: 09/54931-0 - Improvement and management of biological specimen collections at the Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo
• Grantee: Carlos Alberto Garofalo
• Support Opportunities: Research Infrastructure Program - Biological specimen collections