Taxonomic revision of Spectracanthicus Nijssen & Isbrucker (Loricariidae: Hypostominae: Ancistrini), with description of three new species

Author(s)

Chamon, Carine C. ^{[1, 2]} ; Py-Daniel, Lucia H. Rapp ^[3]

Affiliation

^[1] Univ Sao Paulo, Museu Zool, BR-04218970 Sao Paulo - Brazil

^[2] Univ Brasilia UnB, Inst Biol, Dept Zool, BR-70910970 Brasilia, DF - Brazil

^[3] Inst Nacl de Pesquisas da Amazonia, Coordenacao Pesquisas Biol Aquat, Manaus, AM - Brazil

• Document type: Journal article
• Source: Neotropical Ichthyology; v. 12, n. 1, p. 1-25, JAN-MAR 2014.
• Web of Science Citations: 5

Abstract

A taxonomic review of Spectracanthicus Nijssen \& Isbrucker, including Oligancistrus Rapp Py-Daniel, following a phylogenetic study, is presented. Additionally to S. punctatissimus (Steindachner) and S. murinus Nijssen \& Isbrucker, three new species are recognized based on the examination of 159 specimens: S. immaculatus n. sp. from rio Tapajos basin, differs from its congeners by its color pattern consisting of a dark gray body, with no dots or spots, and by having very slender teeth; Spectracanthicus tocantinensis n. sp., from the rio Tocantins drainage is distinguished by the color pattern consisting of dark brown or black body with small, yellowish dots (except in S. punctatissimus), presence of thick teeth, infraorbital 4 forming most of the posterior edge of the orbit and the large basipterigium fenestrae; and Spectracanthicus zuanoni n. sp., from the rio Xingu basin is diagnosed by its color pattern consisting of large, white spots and by the larger orbital diameter. Other characters based on osteological features are also usefull to distinguish the species. A key to the species of the genus and a brief discussion of their threats and conservation are also provided. (AU)

• FAPESP's process: 07/07770-5 - Taxonomic review and phylogenetic relationships of the Acanthicus group (Siluriformes, Loriicariidae)
• Grantee: Carine Cavalcante Chamon
• Support Opportunities: Scholarships in Brazil - Doctorate