- Descrito por / Described by:
James E. Böhlke, 1958

- Nome original / Original name:
Hemibrycon orcési

- Publicado em / Published in:
Proceedings of the Academy of Natural Sciences of Philadelphia v. 110: 1-121, Pls. 1-7.

- Localidade tipo / Type locality:
Rio Macuma, tributário norte do alto rio Morona, província Santiago-Zamora, Equador, 2°07' to 2°13'S, 77°35'W. / Río Macuma, northern tributary of Upper Río Morona, Province Santiago-Zamora, Ecuador, 2°07' to 2°13'S, 77°35'W.