Myrmotherula assimilis transamazonica Gyldenstolpe, Ark. f. Zool., Ser-2, 2, 1951, p. 198.= Myrmotherula assimilis transamazonica Gyldenstolpe, 1951
Holotype : Male, Ilha do Urucurituba in the lower Amazon (opposite Santarém), State of Pará, Brazil. 18 Sept. 1934. A. M. Olalla leg.Click on the picture for enlargement.