PSEUDOPLATYSTOMA GARCIAMARQUEZI, A NEW SPECIES OF ...

lateral side of the body; vertebral count relatively high: (49, n=2); cleithral process short;
coracoid process not developed; lateral process of the weberian apparatus with a broad notch
between vertebra 4 and 5; transverse process of the fourth, fifth and sixth vertebra fused to the
weberian apparatus with a flat shape; the canaliculi of the cephalic lateral line extremely
ramified; hyomandibular and metapterigoid separated, with the quadrate forming the border of
the upper ride of hyomandibular arch. Mental barbels short, the internal pair not reaching a
vertical line through the eye, the external pair not reaching the pectoral origin.
Description:
Fig. 2. Pseudoplatystoma garciamarquezi, Holotype (ICN 6737, 759 mm SL)
The general appearance is shown in the figure 2 and measurements are presented in table 1.
Pseudoplatystoma garciamarquezi is a large species surpassing 1500 mm standard length
(Dahl 1971), the holotype is 759 mm SL. Body elongated and subcylindrical. Body cross
section at the level of the dorsal subcylindrical with the belly flat, becoming compressed
laterally at the caudal peduncle. Ventral profile straight from the lower jaw to the caudal
peduncle. Dorsal profile straight from the posterior part of the dorsal fin to the base of caudal
fin.
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