Neotropical Birds
Version  1.0
This is a historic version of this account.   Current version

Castelnau's Antshrike Thamnophilus cryptoleucus

Thomas S. Schulenberg and Gary H. Rosenberg
Version: 1.0 — Published April 27, 2012


Geographic Variation



Related Species

Described as Myrmelastes cryptoleucus by Menegaux and Hellmayr (1906), with a type locality of Pebas, Peru. The genus Myrmelastes currently is considered a junior synonym of Myrmeciza. For many years cryptoleucus was very poorly known. Cory and Hellmayr (1924) classified it as Myrmeciza cryptoleuca; at that time it was known from very few specimens, so few that at first the female plumage was mistaken for that of the male (Cory and Hellmayr 1924, Todd 1927).

Todd (1927) was the first to identify cryptoleucus as a Thamnophilus and recognized it as a species, although later it was classified for many years instead as a subspecies of Blackish-gray Antshrike Thamnophilus nigrocinereus (e.g. Zimmer 1933, Peters 1951, Meyer de Schauensee 1966). As field ornithologists became more familiar with cryptoleucus in life, it was recognized again as a full species (e.g. Hilty and Brown 1986, Ridgely and Tudor 1994). These two, cryptoleucus and nigrocinereus, were identified as sister species in a phylogenetic analysis of DNA sequence data, from both mitochondrial and nuclear genes (Brumfield and Edwards 2007).

Recommended Citation

Schulenberg, T. S. and G. H. Rosenberg (2012). Castelnau's Antshrike (Thamnophilus cryptoleucus), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/nb.casant1.01
Birds of the World


A global alliance of nature organizations working to document the natural history of all bird species at an unprecedented scale.