Berlepsch and E. J. O. Hartert, 1902,
Puerto Ayacucho, Amazonas, Venezuela.
Member of the “streaked antwren assemblage” (see M. brachyura). Appears to be most closely related to M. pacifica, differences from which include female’s paler and well-streaked forehead and underside, male’s black lower mandible, and voice (e.g. loudsong evenly paced, not accelerating)#R. Monotypic.
SE Colombia (Vichada and Meta to Vaupés), SW Venezuela (Amazonas) and NW Brazil (R Negro and lower R Branco drainages); also locally in NE Peru (along R Tigre and R Nanay, Loreto)#R.
Food and feeding
Status and conservation
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