This antwren occurs in Bolivia, Brazil, Paraguay, and Argentina, in dry or moist lowland forests.
Males have a black crown, white supercilium, a black line behind the eye, a gray back, and a white wing-bar on black wings. Females have a streaked white crown and are more buff or ochraceous than males.
It forages for insects and other arthropods in dry or moist lowland forest. A clutch has two eggs, and both parents share incubation and care of the young.
An extinction-risk assessment has not been added yet.