Cayenne, French Guiana.
Genetic and morphological analyses indicate that this species and M. ignota, M. ambigua, M. sclateri, M. surinamensis, M. multostriata, M. pacifica, M. cherriei, M. klagesi and M. longicauda represent a monophyletic group (the “streaked antwren assemblage”). Present species is closely related to M. ignota (which see), and previously treated as conspecific. Possibility of geographical variation requires investigation. Monotypic.
C & E Colombia (base of Andes S from Meta to E in Guainía, Vaupés and Amazonas), E Ecuador, E Peru, S Venezuela (Bolívar, Amazonas), the Guianas, Amazonian Brazil (E to R Tocantins, S to N & W Mato Grosso) and NW & NE Bolivia.
Food and feeding
Status and conservation
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