Gray-backed Tachuri

Here the details of the Gray-backed Tachuri named bird below:

SCI Name:  Polystictus superciliaris
Protonym:  E[uscarthmus] superciliaris Beitr.Naturgesch.Brasil. 3 p.953
Taxonomy:  Passeriformes / Tyrannidae / Polystictus
Taxonomy Code:  gybtac1
Type Locality:  border of Minas Gerais and Bahia, Brazil; restricted to Vallo [= Vale] Fundo, southern Bahia, by Zimmer, 1955, Amer. Mus. Novit, no. 1749, p. 9.
Author:  zu Wied
Publish Year:  1831
IUCN Status:  Least Concern

DEFINITIONS

POLYSTICTUS
(Tyrannidae; Ϯ Bearded Tachuri P. pectoralis) Gr. πολυστικτος polustiktos  much spotted  < πολυς polus  much; στικτος stiktos  spotted  < στιζω stizō  to tattoo. Reichenbach's 1850, plate LXVII, labelled Muscicapinae: Muscipetinae & Platyrhynchinae, shows a variety of flycatchers, including this bird with a heavily streaked head and face. "Polystictus Reichenbach, 1850, Avium Syst. Nat., pl. 67. Type, by subsequent designation (G. R. Gray, 1855, Cat. Genera Subgenera Birds, p. 54), "Platyrhynchus minimus Gould" = Pachyramphus minimus Darwin = Sylvia pectoralis Vieillot." (Traylor in Peters 1979, VIII, 49-50).
Synon. Habrura.

polystictus
Gr. πολυστικτος polustiktos  much spotted  < πολυς polus  much; στικτος stiktos  spotted   < στιζω stizō  to tattoo.

superciliare / superciliaris
Mod. L. superciliaris  eye-browed  < L. supercilium  eyebrow.
● ex “Janfréderic” of Levaillant 1801-1804, pl. 111 (syn. Cossypha caffra).
● ex “Sourcirou” of Levaillant 1799 (syn. Cyclarhis gujanensis).
● ex “Ypacahá ceja blanca” of de Azara 1802-1805, no. 377 (syn. Hapalocrex flaviventer).
● ex “Hatí ceja blanca” of de Azara 1802-1805, no. 415 (Sternula).
● ex “White-browed Tern” of Latham 1824 (syn. Sternula superciliaris).