Author: Heckel, 1840
Remark: Redescription in Ploeg (1991:70). Ploeg places the type locality in Venezuela, Rio Orinoco system, although all known evidence suggests that it is Rio Negro. The correct catalog number for the lectotype is BMNH 1893.4.24.6 (not 1893.2.24.6 as stated in Ploeg, 1970: 70, fig. 81) and the correct number for the paralectotypes is BMNH 1893.4.24:7-8 (not 1893.4.34:7-8, as stated in Ploeg ,1970: 72).