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| Rocha,Marcelo S.; Oliveira,Renildo R. de; Rapp Py-Daniel,Lúcia H.. |
| A new species of Propimelodus from the middle course of the rio Araguaia is described. Propimelodus araguayae, new species, can be distinguished from its congeners in having a conspicuous black dot on the base of the dorsal-fin rays (vs. a different pattern), large eyes (29.7-34.8% of head length and 62.7-74.7% of snout length vs. 14.5-21.1% and 31-44% in P. caesius and 9.5-19.7% and 17-38% in P. eigenmanni), anal-fin lobe present (vs. absent), premaxillary bone with three irregular rows of teeth (vs. 4-5 in P. caesius and 5-8 in P. eigenmanni), tip of anterior lateral process of basipterygium at the same level as the tip of the anterior medial process (vs. anterior lateral process extending beyond the tip of the anterior medial process), total number of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Catfish; Systematics; Propimelodus araguayae; Propimelodus eigenmanni; Propimelodus caesius. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000300007 |
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| Sousa,Leandro M.; Rapp Py-Daniel,Lúcia H.. |
| The genus and species Physopyxis lyra was originally described based on only one very distinctive specimen. Analysis of a larger number of specimens provided a more precise characterization of the genus and the type species. Additionally, two new species are described based on material already available in museums and new collections. Physopyxis lyra is characterized by having a well developed coracoid process with divergent tips, and only one series of spines on the lateral plates. Physopyxis ananas, new species, has a thin coracoid process, convergent, and more than one series of spines on the lateral plates. Physopyxis cristata, new species, is a slender species, characterized by an incomplete series of lateral plates and the presence of a middorsal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plates ornamentation; Incomplete lateral line; Taxonomy; Thorny catfish. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000400019 |
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