Small canopy antwren, unmistakable in its tiny range. Males have a gray back, gray head, black-and-white streaked flanks, and white underparts. Females have a cinnamon back and a brownish tinge to the underparts and head. Found in a few remaining fragments of semi-humid forest at higher elevation, where it forages actively in the canopy, typically with mixed-species flocks. Draws attention to itself by its fast song with uneven “chip” notes, similar to Streak-capped Antwren, with which it doesn’t overlap in range.