@article{article6b69d17b,
title   = {Hybrid, subspecies, or species? The validity and taxonomic status of Phaethornis longuemareus aethopyga Zimmer, 1950 (Trochilidae)},
author = {Piacentini, Vítor de Queiroz and Aleixo, Alexandre and Silveira, Luís Fábio},
year = {2009},
doi = {10.1525/auk.2009.08130},
journal   = {Auk}
}