Comments |
new combination for Petrocephalus guttatus While examining the type specimens of all Petrocephalus species known from the Congo and Lower Guinea provinces, we noted that Petrocephalus guttatus Fowler, 1936 does not exhibit the characteristic combination of traits diagnostic for this genus. The holotype of P. guttatus [from the Kribi Creeks, Lower Guinea region (Fowler, 1936)] lacks all of the following character states typical of Petrocephalus: nares closely apposed and directly in front of the eye; all teeth of the lower and upper jaws bicuspid and of the same size; mouth inferior, rictus under eye; Knollenorgan electroreceptors organized into rosettes (Harder, 1968; 2000). Therefore, we provisionally re-assign Petrocephalus guttatus to the genus Pollimyrus based on the apparent morphological similarity between Petrocephalus guttatus and Pollimyrus isidori (Valenciennes in Cuvier and Valenciennes, 1847). |