The cryptic treehunter (Cichlocolaptes mazarbarnetti) is or was a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae.

[2] The cryptic treehunter was described from a specimen collected in 1986 that originally had been identified as an Alagoas foliage-gleaner (Philydor novaesi).

[1] The International Ornithological Committee (IOC) and the Clements taxonomy had accepted it as a species but did not note it as being extinct.

Its iris is brown, its maxilla black, its mandible paler, and its legs and feet grayish olive.

[5] The cryptic treehunter has only been recorded at two sites in northeastern Brazil, the Murici Ecological Station in Alagoas and the private preserve RPPN Frei Caneca in Pernambuco.

The habitat at the sites is humid forest on hilly terrain with many vine tangles, bromeliads, and mosses.

[1] The specimens were collected in nominally protected areas, but Murici remains under pressure from illegal logging and hunting.