Una enorme congregación de Episcada hymenaea (Lepidoptera: Nymphalidae: Danainae) en las yungas del norte de Salta, Argentina

This work documents the first record of a large winter concentration of thousands of Episcada hymenaea specimens from August 2014 to October 2017 in the Yungas of the far north of Argentina. This information was documented through photographs and video recordings, and is compared to the available in Brazil and Paraguay for the same tribe.