Editorial Type:
Article Category: Research Article
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Online Publication Date: Dec 01, 2000

Aspidoras depinnai (Siluriformes: Callichthyidae): A New Species from Northeastern Brazil

Page Range: 1048 – 1055
DOI: 10.1643/0045-8511(2000)000[1048:ADSCAN]2.0.CO;2
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Abstract

A new species of the corydoradine catfish genus Aspidoras is described from an isolated coastal river basin in northeastern Brazil. The new species is the first record of a member of the subfamily Corydoradinae from the intervening region between the rio Jaguaribe and rio São Francisco basins. Aspidoras depinnai, new species, is distinguished from all congeners by the presence of distal bifid serrations on the ossified portion of pectoral-spine posterior border and an irregular arclike blotch on the caudal peduncle. It differs from the remaining Aspidoras species examined in the present study by the presence of an irregular row of minute pores on the head and a small cartilage between the upper principal and procurrent caudal fin rays.

Résumé

Uma nova espécie de bagre coridoradíneo do gênero Aspidoras é descrita de uma bacia costeira isolada no nordeste do Brasil. A nova espécie é o primeiro registro de um membro da subfamília Corydoradinae da região intermediária entre as bacias dos rios Jaguaribe e São Francisco. Aspidoras depinnai, nova espécie, é diferenciada de todas as suas congêneres pela presença de serreado bífido na margem posterior distal da porção ossificada do espinho peitoral e uma mancha irregular em arco no pedúnculo caudal. Além disso, ela difere das demais espécies de Aspidoras examinadas no presente estudo pela presença de uma fileira irregular de minúsculos poros na cabeça e uma pequena cartilagem entre os raios caudais principais e procurrentes superiores.

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Copyright: The American Society of Ichthyologists and Herpetologists
Fig. 1.
Fig. 1.

Aspidoras depinnai, new species, holotype, MZUSP 56216, 32.5 mm SL

Fig. 2.
Fig. 2.

Dorsal (left) and ventral (right) views of head of Aspidoras depinnai, new species, paratype, MZUSP 53717, 33.3 mm SL. Odontodes not depicted. Scale bar = 1 mm

Fig. 3.
Fig. 3.

Right side of head of Aspidoras depinnai, new species, showing some superficial neuromasts (arrows). b = barbel; n = anterior nare. Scale bar = 1 mm

Fig. 4.
Fig. 4.

Posterior tip of the ossified portion of left pectoral spine of Aspidoras depinnai, new species, paratype, MZUSP 53717, 33.3 mm SL. Odontodes not depicted. Scale bar = 1 mm

Fig. 5.
Fig. 5.

Caudal skeleton of Aspidoras depinnai, new species, paratype, MZUSP 56216. c = vertebral centrum; e = epural; h = hypurals 3+4+5; p+h = parhypural + hypurals 1+2; r = principal rays; rp = procurrent rays; arrow = cartilage between principal and procurrent rays. Lower rays and odontodes not depicted. Scale bar = 1 mm

Fig. 6.
Fig. 6.

Type-locality of Aspidoras depinnai, new species (circle). Inset showing detail of the region

Accepted: Apr 21, 2000