Abstract
ABSTRACT A new species of Aspidoras from the rio da Dona basin, a small coastal river drainage in Bahia State, is described herein. The new taxon differs from its congeners by presenting infraorbital 1 with well-developed ventral laminar expansion, nuchal plate nearly reaching to or sometimes contacting posterior process of parieto-supraoccipital, anterior tip of nuchal plate just posterior to dorsal margin of first dorsolateral body plate, and blotches on dorsal half of dorsolateral body plates and/or ventral half of ventrolateral body plates fused with midlateral series of blotches, forming three or four enlarged and oblique black blotches.
Highlights
Aspidoras Ihering, 1907 comprises 22 valid species (Eschmeyer et al, 2016) of small armored catfishes that are relatively broadly distributed in Brazil, mainly in the central and northeastern regions
Almost half of the known species of Aspidoras were described from northeastern Brazil: A. carvalhoi Nijssen & Isbrücker, 1976, from rivers around Guaramiranga, Ceará; A. depinnai Britto, 2000, from the rio Ipojuca basin, Pernambuco; A. maculosus Nijssen & Isbrücker, 1976, from the rio Itapicuru basin, Bahia; A. menezesi Nijssen & Isbrücker, 1976, from the rio Jaguaribe and rio Salgado basins, Ceará; A. psammatides Britto, Lima & Santos, 2005, from the rio Paraguaçu basin, Bahia; A. raimundi (Steindachner, 1907), from rio Parnaíba basin, Maranhão; A. rochai Ihering, 1907, from coastal drainages around Fortaleza, Ceará; A. spilotus Nijssen & Isbrücker, 1976, from the rio Acaraú basin, Ceará; and A. virgulatus Nijssen & Isbrucker, 1980, from coastal streams between Linhares and São Mateus, Espírito Santo
According to the most recent phylogenetic studies (Alexandrou et al, 2011; Vera-Alcaraz, 2013), Aspidoras is paraphyletic since A. pauciradiatus and A. virgulatus are members of other clades
Summary
Aspidoras Ihering, 1907 comprises 22 valid species (Eschmeyer et al, 2016) of small armored catfishes that are relatively broadly distributed in Brazil, mainly in the central and northeastern regions. Almost half of the known species of Aspidoras were described from northeastern Brazil: A. carvalhoi Nijssen & Isbrücker, 1976, from rivers around Guaramiranga, Ceará; A. depinnai Britto, 2000, from the rio Ipojuca basin, Pernambuco; A. maculosus Nijssen & Isbrücker, 1976, from the rio Itapicuru basin, Bahia; A. menezesi Nijssen & Isbrücker, 1976, from the rio Jaguaribe and rio Salgado basins, Ceará; A. psammatides Britto, Lima & Santos, 2005, from the rio Paraguaçu basin, Bahia; A. raimundi (Steindachner, 1907), from rio Parnaíba basin, Maranhão; A. rochai Ihering, 1907, from coastal drainages around Fortaleza, Ceará; A. spilotus Nijssen & Isbrücker, 1976, from the rio Acaraú basin, Ceará; and A. virgulatus Nijssen & Isbrucker, 1980, from coastal streams between Linhares and São Mateus, Espírito Santo. After the analysis of material from the rio da Dona basin, a small coastal drainage that runs through the Atlantic Forest in Bahia State, a new species was revealed and is described
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