In the Dept. de Antioquia, Colombia, Neocorynura pubescens is active throughout the year. Females collect pollen from weedy Compositae. Many nests in the banks of a small ditch were surprisingly similar in number of inhabitants, structure, manner of construction, and re-use to those of the strikingly different looking species, N. fumipennis, in Costa Rica. Mating presumably occurs in the nesting area; a clump of males prepared to pass the night on a perch in that area.