White-shouldered Antbird

Here the details of the White-shouldered Antbird named bird below:

SCI Name:  Akletos melanoceps
Protonym:  Thamnophilus melanoceps Av.Sp.Nov.Brasil. 2 p.28 pl.39 fig.1
Taxonomy:  Passeriformes / Thamnophilidae / Akletos
Taxonomy Code:  whsant1
Type Locality:  'in Sylvis Parae''; error = Rio lea, Brazil, substituted by Hellmayr, 1924.
Author:  von Spix
Publish Year:  1825
IUCN Status:  Least Concern

DEFINITIONS

AKLETOS
(Thamnophilidae; Ϯ White-shouldered Antbird A. melanoceps) Gr. ακλητος aklētos  uncalled, unbidden  < negative prefix α- a- ; κλητος klētos  called, chosen  < καλεω kaleō  to summon; "AKLETOS, new genus.  Description. - Similar to Attila Lesson, but tarsus longer and beak smaller. Bristles of the gape undeveloped. Beak about as long as the head; its shape is reminiscent of those of Attila and Laniocera Lesson. The outer toe is united to the middle one over a greater distance than in Attila, but not quite to the end of the second phalange. Tarsus pycnaspidean, longer than the culmen and the clawed middle toe, and longer than one-third of the wing length. Tail short and slightly rounded. The fifth and sixth primaries are the longest, the tenth between the second and third.  Genotype:- AKLETOS PERUVIANUS, new species" (Dunajewski 1948); "Akletos Dunajewski, 1948, Bull. Brit. Ornith. Club, 68 (7), p. 131.  Type, by original designation and monotypy, Akletos peruvianus Dunajewski, 1948 (♀)  = Thamnophilus melanoceps von Spix, 1825." (JAJ 2020).
Synon. Inundicola.

melanoceps
L. melas, melanos  black  < Gr. μελας melas, μελανος melanos  black; -ceps -capped  < caput, capitis  head.