- Descrito por / Described by:
Jacques Géry, 1959

- Nome original / Original name:
Thayeria ifati

- Nome do artigo / Article name:
Contributions to the study of the characoid fishes, 1. Thayeria ifati n. sp. of Guiana, with considerations on the evolution of the genus.

- Publicado em / Published in:
Senckenbergiana Biologica v. 40 (nos 3/4): 127-133.

- Localidade tipo / Type locality:
"Gaa Kaba", Maroni, Guiana, norte do quarto paralelo. / "Gaa Kaba", Maroni, Guiana, north of the 4th parallel.