Čeleď: Stevardiidae Gill, 1858
Rod: Monotocheirodon Eigenmann & Pearson, 1924
Jižní Amerika — horní tok řeky Guayabero, povodí Orinoka, departement Meta, Kolumbie.
Río Guape, Río Duda drainage, Guayabero River basin, La Uribe, Meta Department, Colombia, 03°15'00"N, 74°16'00"W, elevation 605 meters.
Carvalho, T. P., Thomaz, A. T., Urbano-Bonilla, A. & Prada-Pedreros, S. 2024. A new characid species with remarkable sexual dimorphism (Characiformes: Characidae: Stevardiinae) from the upper Guayabero River, Orinoco basin, Colombia. Journal of Fish Biology v. 104 (no. 6): 1947-1959 1-13.
Fricke, R., Eschmeyer, W. N. & Van der Laan, R. (eds). 2024. Eschmeyer's catalog of fishes: Genera, species, references. World Wide Web.