Myrmotherula cinereiventris pallida Berlepsch and Hartert, 1902

Myrmotherula cinereiventris pallida Berlepsch and Hartert, 1902

Includes the study populations designated pallida- E and pallida- W in the analysis.

Diagnosis. Female plumage differs subtly from nominate in coloration. Upperparts Dark Olive Grayish Brown (2.5Y4/1–2.5Y4/2), brown wings and tail with pale feather edgings colored like underparts; underparts Yellow Ochre (10YR7/6).

Distribution. Bounded on the north in Colombia by the Rio Inírida extending north to Meta along Andean foothills and in Venezuela by the Rio Orinoco; on the east in Venezuela by the physical barriers of the Roraima- Rupununi savannas, the Gran Sabana, and the Rio Paragua, and in Brazil by the Rio Branco and lower Rio Negro; on the south by the Rio Amazonas and Rio Marañón; and on the west by Andean foothills.

Remarks. M. c. pallida is considered a subspecies of Myrmotherula cinereiventris , rather than a species, based on the similarity of their vocalizations. Subspecies status is supported by differences from cinereiventris s.s. in female plumage and an mtDNA genetic distance of ~2.3%. Male plumage is generally paler than nominate but the differences are not diagnostic. No diagnostic vocal or morphological differences were found between pallida -E and pallida- W. Geographic range in Venezuela is based on Naka (2010, 2011).