This species was discovered in 2016 at a location that was well known as the most accessible site to see Scarlet-banded Barbet. It was described in a surprisingly short amount of time in 2017 (A new species of antbird (Passeriformes: Thamnophilidae) from the Cordillera Azul, San Martín, Peru. Andre E. Moncrieff, Oscar Johnson, Daniel F. Lane, Josh R. Beck, Fernando Angulo and Jesse Fagan). www.bioone.org/doi/10.1642/AUK-17-97.1. It was not easy to find during my visit. It was unusually dry and I wonder if that resulted in less vocalization. Continued deforestation of the area also does not help. The local guide (Eugenio) took me to a location away from the "traditional" spots on my last morning, where we finally found a vocal and responsive pair. It was very tough to get a sharp shot due to low light conditions and the fact that the bird was constantly moving. I could have spent longer trying to get a better shot, but did not want to overdo the playback.
Africa (entire continent rather than south of Sahara)
AN
Antarctica
AO
Atlantic Ocean
AU
Australasia (Wallacea (Indonesian islands east of Wallace's line), New Guinea and its islands, Australia, New Zealand and its subantarctic islands, the Solomons, New Caledonia, and Vanuatu)
PAL
Eurasia (Europe, Asia from the Middle East through central Asia north of the Himalayas, Siberia and northern China to Japan)
IO
Indian Ocean
LA
Latin America (Middle and South America)
MA
Middle America (Mexico through Panama)
NA
North America (includes the Caribbean)
NO
Northern oceans
OR
Oriental Region (South Asia from Pakistan to Taiwan, plus Southeast Asia, the Philippines, and Greater Sundas)