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A New Species in the Myrmotherula haematonota Superspecies (Aves; Thamnophilidae) from the Western Amazonian Lowlands of Ecuador and Peru

Niels Krabbe, Morton L. Isler, Phyllis R. Isler, Bret M. Whitney, Jose Alvarez A. and Paul J. Greenfield
The Wilson Bulletin
Vol. 111, No. 2 (Jun., 1999), pp. 157-165
Stable URL: http://www.jstor.org/stable/4164061
Page Count: 10
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Abstract

A new species of antwren (Myrmotherula fjeldsaai) closely related to Myrmotherula haematonota is described from the lower tropical zone of eastern Ecuador and immediately adjacent Peru. It primarily differs from M. h. haematonota by its brown instead of red back in both sexes. New distributional data for nominate M. h. haematonota shows that it meets the new species north of the Río Marañón, between the Ríos Napo and Pastaza, with no apparently significant physical barrier between them.

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