Red-rumped Bush-Tyrant

Here the details of the Red-rumped Bush-Tyrant named bird below:

SCI Name:  Cnemarchus erythropygius
Protonym:  Taenioptera erythropygia Proc.Zool.Soc.London(1851) (1851), Pt19 no.231 p.193 pl.41
Taxonomy:  Passeriformes / Tyrannidae / Cnemarchus
Taxonomy Code:  rrbtyr1
Type Locality:  Ecuador; restricted to Verdecocha, Pichincha (J. T. Z.).
Author:  Sclater, PL
Publish Year:  1853
IUCN Status:  Least Concern

DEFINITIONS

CNEMARCHUS
(Tyrannidae; Ϯ Red-rumped Bush Tyrant C. erythropygius) Gr. κνημος knēmos  mountain-slope; αρχος arkhos  ruler, chief  < αρχω arkhō  to rule; the Red-rumped Bush Tyrant was described from the high Andes of Ecuador; "Cnemarchus gen. nov.  (Tyrannidae)   Somewhat like Myiotheretes Reichenbach, but tarsus relatively much shorter (much less than twice as long as the relatively shorter middle toe, with claw); claw of hallux not longer than its digit; wing only moderately lengthened, the longer primaries exceeding secondaries by much less than twice the length of tarsus and much less than one-third (instead of nearly one-half) the total length of wing; outermost (tenth) primary shorter than sixth (instead of equalling or exceeding ninth) and not attenuated at tip; tail more than two-thirds as long as wing, even (instead of emarginate), extensively rufous in color; bristly tips of latero-frontal feathers well-developed, arched; bill relatively much smaller, the exposed culmen not longer than outer toe, without claw; rump rufous but no rufous on remiges.   Type, Tænioptera erythropygia Sclater = Cnemarchus erythropygius.  (Kνημος, slope of a mountain; αρχος, ruler, chief.)" (Ridgway 1905); "Cnemarchus Ridgway, 1905, Proc. Biol. Soc. Washington, 18, p. 208.  Type, by original designation, Taenioptera erythropygia Sclater." (Traylor in Peters, 1979, VIII, p. 160). 

erythropygia / erythropygium / erythropygius
Gr. ερυθρος eruthros  red; -πυγιος -pugios  -rumped  < πυγη pugē   rump.
● ex “Red-rumped Creeper” of Latham 1801 (syn. Myzomela sanguinolenta).

SUBSPECIES

Red-rumped Bush-Tyrant (orinomus)
SCI Name: Cnemarchus erythropygius orinomus
orinoma / orinomus
Gr. ορεινομος oreinomos  feeding on the hills  < ορος oros, ορεος oreos  mountain; -νομος -nomos  -feeding  < νεμω nemō  to consume.

Red-rumped Bush-Tyrant (erythropygius)
SCI Name: Cnemarchus erythropygius erythropygius
erythropygia / erythropygium / erythropygius
Gr. ερυθρος eruthros  red; -πυγιος -pugios  -rumped  < πυγη pugē   rump.
● ex “Red-rumped Creeper” of Latham 1801 (syn. Myzomela sanguinolenta).