The local subspecies is Amazilia fimbriata nigricauda, distributed south of the Amazon in central and eastern Brazil. RPPN Mãe-da-lua.
Synonyms: Trochilus fimbriatus GMELIN 1788; Thaumatias nigricauda ELLIOT 1878
Figure 1. Amazilia fimbriata nigricauda (this page) can quite easily be confused with the Versicoloured Emerald Amazilia versicolor nitidifrons, which also occurs in Ceará.
Among the morphological differences between these taxa are the undertail-coverts, which are white with bronze spots in A. versicolor nitidifrons, and pure white in A. fimbriata nigricauda. Furthermore, nitidifrons has a dark subterminal band crossing the rectrizes, which is absent in A. fimbriata (see Mata et al. 2006, p. 281 fig. 9).To top of page