Propimelodus caesius a new species of long-finned pimelodid catfish (Teleostei: Siluriformes) from the Amazon Basin, South America

被引：8
|
作者：
Parisi, Beatrice M. [1 ]
Lundberg, John G. [2 ]
Donascimiento, Carlos [3 ]
机构：
[1] Museum Natl Hist Nat, Dept Milieux & Peuplements Aquat, USM Biodiversitedes Communautes Aquat 403, F-75231 Paris 05, France
[2] Acad Nat Sci Philadelphia, Dept Ichthyol, Philadelphia, PA 19103 USA
[3] Museo Hist Nat La Salle, Fdn La Salle Ciencias Nat, Secc Ictiol, Caracas 1010A, Venezuela
来源：
PROCEEDINGS OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA | 2006年 / 155卷
基金：
美国国家科学基金会;
关键词：
Propimelodus caesius Parisi; Lundberg & DoNascimiento;
D O I：
10.1635/i0097-3157-155-1-67.1
中图分类号：
X176 [生物多样性保护];
学科分类号：
090705 ;
摘要：
Propimelodus caesius is described as a new species of Pimelodidae from the main channels of the Amazon River and its large tributaries. This common yet rarely seen species is distinguished from its closest relative, P. eigenmanni, by its relatively larger eye, toothed metapterygoid bone, greater number of vertebrae, narrowly spaced anterior nostrils, and violet to blue color. Additional anatomical details are described for the diagnostic palatine bones of Propimelodus. Derived features of the basipterygium, nuchal plates and posterior cleithral process are introduced that further help to distinguish and place Propimelodus among pimelodids.
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页码：67 / 78
页数：12
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