Please first read the evidences found in the biodiversity literature before you make the judgment about whether this name is a taxonomic name or not.
Basileuterus brasieri, Scl. P. Z. S. 1855, p. 669; Scl.P. Z. S. 1856, p. 29210; Scl.P. Z. S. 1859, p. 37411; Scl. & Salv. Ibis, 1860, p. 27412.
Though many of the sixteen birds described as from Texas by Giraud have been found within the borders of the United States, B. culicivorus (included by that author as B. brasieri) is not amongst them, and its Texan habitat remains to be confirmed. Its northern range does not, so far as we know at present, extend beyond the temperate
In his note on Giraud’s ‘Birds of Texas,’ Mr. Sclater, while recognizing the identity of Muscicapa brasieri of Giraud, and Sylvia culicivora, Licht., says that the bird should be called Basileuterus brasieri (Giraud); and it thus passed for several years. In giving this decision, however, he overlooked Lichtenstein’s short but recognizable description of his S. culicivora1, published in 1830, the latter name having some ten years’ priority.