Callopanchax, MYERS, 1933

Costa, Wilson J. E. M., 2015, Comparative morphology, phylogeny, and classification of West African callopanchacine killifishes (Teleostei: Cyprinodontiformes: Nothobranchiidae), Zoological Journal of the Linnean Society 175 (1), pp. 134-149 : 140-141

GENUS CALLOPANCHAX MYERS, 1933

Callopanchax Myers, 1933: 184 [proposed as a subgenus of Aphyosemion Myers, 1924 ; type species Aphyosemion sjoestedti non A. sjoestedti (Lönnberg, 1895) (misidentification of Aphyosemion occidentale Clausen, 1966 ); type by original designation].

Roloffia Clausen, 1966: 338 (type species Aphyosemion occidentale Clausen, 1966 ; type by original designation).

Diagnosis

Species of the genus Callopanchax differ from species of all other genera of the Callopanchacini by four osteological synapomorphies: dorsal portion of the autopalatine twisted and narrow as a result of a internal torsion (21.1; Fig. 2B ), versus not twisted and broad ( Fig. 2A ); anteroventral margin of the hyomandibula convex as a result of an anterior expansion of the ventral portion of the hyomandibula and adjacent metapterygoid (23.1; Fig. 2B ), versus hyomandibula and adjacent metapterygoid not expanded ( Fig. 2A ); neural processes of the first vertebra medially fused (47.1; Fig. 5B ), versus not fused ( Fig. 5A ); neural prezygapophyses of the anterior caudal vertebrae long (52.1; Fig. 5D ), versus short ( Fig. 5E ). Included taxa

Four valid species, according to Sonnenberg & Busch (2010: Callopanchax monroviae (Roloff & Ladiges, 1972) ; Callopanchax occidentale ( Clausen, 1966) ; Callopanchax sidibei Sonnenberg & Busch, 2010 ; and Callopanchax toddi ( Clausen, 1966) .

Figures

Figure 2. Jaws, jaw suspensorium, and opercular series, left lateral view, of Archiaphyosemion guineense (A), and Callopanchax monroviae (B). Numbers in brackets are character states numbered according to Appendix S2. Larger stippling indicates cartilage. Scale bars = 1 mm.

Figure 5. Vertebrae and caudal skeleton (all in left lateral view except A, in laterodorsal view): first vertebrae of Nimbapanchax leucopterygius (A) and Callopanchax monroviae (B); epipleural rib of second precaudal vertebra of N. leucopterygius (C); fourth caudal vertebra of C. monroviae (D) and N. leucopterygius (E); caudal skeleton of Scriptaphyosemion guignardi (F) and Callopanchax occidentalis (G). Larger stippling indicates cartilage. Scale bars: 0.5 mm.