Acre Antshrike Thamnophilus divisorius Scientific name definitions

The recently described Acre Antshrike was discovered very recently within the Parque Nacional da Serra do Divisor, in Acre, at the extreme southwest frontier of Brazil, specifically on the Serra da Jaquirana, the easternmost of a series of narrow ridges in the Serra do Divisor. The species was encountered again a few years later on physiognomically similar ridges in the neighboring department of Ucayali, in Peru. Within its range, the Acre Antshrike is common but is restricted to stunted ridgetop woodlands with a broken canopy and dense understory on very thin soils. Males are very dark bluish gray, becoming progressively blacker over the head, wings, and tail, while females are bluish gray above, and brownish orange below, and the birds remain in close-knit pairs, which forage apart from mixed-species flocks.