The lesser greenlet (Pachysylvia decurtata) is a small passerine bird in the vireo family. It breeds from northeastern Mexico south to western Ecuador. This is a common species of lowlands and foothills up to 1,200 m (3,900 ft) altitude, where it inhabits forest canopy and edges, and the crowns of trees in tall second growth or semi-open areas. The nest is a deep cup of dead leaves and spiderwebs attached by the rim to branches 10–15 m (33–49 ft) high in a tree. The normal clutch is two brown-marked white eggs.