Type locality, Pará: Rio Pará between Rio Boa Vista and Rio Tocantins, between towns of Boa Vista and Abaetetuba, INPA 28377 (holotype of Sternarchorhynchus starksi, 23.1 cm TL; formerly FMNH 115485). Samples with definite locality information came from the easternmost portions of the Amazon basin or were purchased in the fish market at Belém (Starks, 1913: 4, 23; cited as S. curvirostris; given the fishing and transportation technology at this time, it is likely that those market samples were captured close to that city in the lowermost portion of the Amazon River) (Ref. 84053).