Ptychochromis Steindachner, 1880

STIASSNY, MELANIE L. J & SPARKS, JOHN S, 2006, Phylogeny and Taxonomic Revision of the Endemic Malagasy Genus Ptychochromis (Teleostei: Cichlidae), with the Description of Five New Species and a Diagnosis for Katria, New Genus, American Museum Novitates 3535 (1), pp. 1-56 : 14

Ptychochromis Steindachner, 1880

DIAGNOSIS: A ptychochromin genus diagnosed by the presence of a free second epibranchial toothplate (fig. 7A, Character 10: 1), the third infraorbital (IO3) excluded from the orbit by IO2 (fig. 8F, Character 11:1), the presence of a well-developed palatine groove (fig. 6F–G, Character 12:1), and ventral displacement of the palatine-palatine ligament insertion (fig. 6F–G, Character 13:1).

Ptychochromis onilahy , new species

Figures 11–12 , Plate 2A, Table 4

Ptychochromis oligacanthus , race du Sud-Ouest: Kiener, 1963.

Ptychochromis oligacanthus , race géographique ‘‘Sud-Ouest’’: Kiener and Mauge´, 1966, fig. 26.

Figures

Fig. 11. Ptychochromis onilahy, new species, holotype, MNHN 1962-0201, 84.3 mm SL, southwestern Madagascar, Province of Tulear, Onilahy River. Scale bar 5 1 cm. Drawing by Ian Hart.

Fig. 12. Ptychochromis onilahy, new species, paratype, MNHN 2006-0780: (A) palatine, (B) LPJ, (C) first gill arch, and (D) infraorbital series.