Author: de Santana & Vari, 2013
Remark: The report of <i>A. leptorhynchus</i> from the Río Claro, a left bank tributary of the lower Río Caroni and from Gran Sabana region of the upper Rio Caroni basin may be based on samples of <i>A. pemon</i>, which is the only member of the species-group known from that river system (Ref. 93867).