The Lanceolated Monklet is a small, distinctive puffbird, and a seldom-seen and oft-overlooked rainforest inhabitant from Costa Rica south through Peru and Brazil to the Bolivian border, as well as the western Amazon basin. Though widely distributed, this species' range seems to be patchy and localized, and it seems to prefer older second growth woodland, often near edges or openings. The Lanceolated Monklet is most often seen associating loosely with sub-canopy flocks, perching quietly, often without moving for extended periods. This is a distinctive species, which, if seen well, is unlikely to be confused with any other species. The Lanceolated Monklet is small and squat, with a large head and chocolate-brown upperparts. The white lores form a spectacled look, and the underparts are white, with thick, well-defined black streaks.