Cnesterodon carnegiei Haseman, 1911

Lucinda, Paulo H. F., 2005, Systematics of the genus Cnesterodon Garman, 1895 (Cyprinodontiformes: Poeciliidae: Poeciliinae), Neotropical Ichthyology 3 (2), pp. 259-270 : 266-267

Cnesterodon carnegiei Haseman, 1911

( Fig. 10 )

Cnesterodon carnegiei Haseman, 1911: 385 . Plate 83. Type - locality: Serrinha, Paraná.

Diagnosis. Cnesterodon carnegiei is readily distinguished from C. omorgmatos and C. raddai by dark brown blotches along body sides (forming bars vs. circular or irregular, respectively). Cnesterodon carnegiei is distinguished from C. decemmaculatus , C. brevirostratus , and C. iguape by dark bars of body very elongate reaching dorsal and ventral profiles, covering more than four scales in a transverse row (vs. dark bars on sides of body, mostly confined to midline, covering less than three scales in a transverse row, never extending to dorsal and ventral profiles). The absence of small scales covering lateral and ventral region below pectoral fin and the pointed snout also differs C. carnegiei from C. brevirostratus . The absence of a longitudinal dark brown band along flank differentiates C. carnegiei from C. hypselurus . Cnesterodon carnegiei is distinguished from C. septentrionalis , C. omorgmatos , and C. decemmaculatus , by the number of epipleural ribs (10-12 vs. 6 in C. septentrionalis , 7 or 8 in C. omorgmatos and C. decemmaculatus ). Cnesterodon carnegiei also differs from C. septentrionalis by the number of caudal-fin rays (25-26 vs. 20-22, respectively), by the number of longitudinal scales (28-31 vs. 25-26, respectively) and by the number of transverse rows between dorsal and anal fin (8-10 vs. 7, respectively).

Distribution. Cnesterodon carnegiei is known from the upper portions of rio Iguaçu and its upper tributaries ( Fig. 1 ).

Figures

Fig. 10. Cnesterodon carnegiei. MHNCI 7609, rio Passaúna, Almirante Tamandaré,Paraná,Brazil:(a) male,24.3 mm SL; (b) female,30.1 mmSL.

Fig. 1. Collection localities of Cnesterodon species: C. septentrionalis (eight-pointed stars, 1), C. hypselurus (triangles, 2), C. iguape (five-pointed stars, 3), C. omorgmatus (cross, 4), C. carnegiei (lozenges, 5), C. raddai (pentagons), C. brevirostratus (circles, 6), and C. decemmaculatus (squares, 7). Some symbols represent more than one lot or locality. Numbers represent type localities.