[1]
Lopes, L.E. and Gonzaga, L.P. 2016. Morphological data support the recognition of four species in the genus Sirystes Cabanis & Heine, 1859 (Aves: Tyrannidae). Zootaxa. 4127, 3 (Jun. 2016), 401–431. DOI:https://doi.org/10.11646/zootaxa.4127.3.1.