DENTICETOPSINI, De Pinna & Ferraris & Vari, 2007

De Pinna, Mário C. C., Ferraris, Carl J. & Vari, Richard P., 2007, A phylogenetic study of the neotropical catfish family Cetopsidae (Osteichthyes, Ostariophysi, Siluriformes), with a new classification, Zoological Journal of the Linnean Society 150 (4), pp. 755-813 : 802-803

TRIBE DENTICETOPSINI , NEW TRIBE

Type genus: Denticetopsis Ferraris, 1996

Diagnosis (Br:> 5, jk: 99,bs: 99)

Lateral-most one or two premaxillary teeth larger than remaining premaxillary teeth, with their longitudinal axis parallel, or nearly parallel, to longitudinal plane of premaxilla (10);

Hyoid branch of hyoideomandibular nerve on hyomandibula trespassing hyomandibula and running exposed on its lateral surface (18, convergent with Helogeninae );

Passage for trigeminal nerve narrow and constricted by dorsal lamina of metapterygoid (19);

Vomer with median protuberance anteriorly on ventral surface (41, convergent with clade formed by Cetopsidium pemon and Cetopsidium sp. );

Dorsal surface of shaft of mesethmoid strongly concave (43, convergent with Cetopsis amphiloxa );

First hypobranchial with posteromedial concavity, strongly arched (66);

Interhyal distinctly elongate, with length approximately six or more times its length (80);

Posterior process of posterior ceratohyal long and well defined, extending posteriorly or posterodorsally along posterior margin of interhyal (85);

Posteriorly directed process of basipterygial cartilage distal to lateral bifurcation absent (111);

Base of unbranched ray of pelvic fin approximately twice as wide as base of branched fin rays (116).

Included genera: Denticetopsis Ferraris, 1996

Genus Denticetopsis Ferraris, 1996

Denticetopsis Ferraris, 1996 (type species: Denticetopsis sauli Ferraris, 1996 ).

Diagnosis: As for tribe.

Included species: Denticetopsis epa Vari, Ferraris, and de Pinna , D. iwokrama Vari, Ferraris, and de Pinna ( Fig. 36 ), D. macilenta (Eigenmann) , D. praecox (Ferraris and Brown) , D. royeroi Ferraris , D. sauli Ferraris.

Included species: Paracetopsis atahualpa Vari, Ferraris, and de Pinna , P. bleekeri Bleeker , P. esmeraldas Vari, Ferraris, and de Pinna ( Fig. 37 ).

Figures

Figure 36. Denticetopsis iwokrama, ANSP 177215, 43 mm SL; Guyana, Essequibo, Essequibo River basin, Siparuni River.

Figure 37. Paracetopsis esmeraldas, MCZ 48768, 68 mm SL; Ecuador, Esmeraldas, Río Esmeraldas basin, Río Blanco.