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- Acre antshrike was recognized as a distinct species in 2004.
- WHITNEY, B. M., D. C. OREN, AND R. T. BRUMFIELD. 2004. A new species of Thamnophilus antshrike (Aves: Thamnophilidae) from the Serra do Divisor, Acre, Brazil. Auk 121: 1031-1039.