M. H. C. Lichtenstein, 1820,
Closely related to D. hoffmannsi (which see) and D. platyrostris, and work needed to justify their continued separation. Has apparently hybridized intergenerically with Hylexetastes stresemanni in W Brazil, one of few cases of possible hybridization in suboscines. Races form three groups, occurring in distinct biogeographical regions and differing in morphology, albeit not in voice: “picumnus group” (in which strikingly different transfasciatus sometimes treated as full species) is primarily Amazonian, but apparently with recent invasion into N Andes and mountains of S Central America (multistrigatus and costaricensis); montane “puncticollis group” occurs at fringes of species’ range; monotypic “pallescens group”, in Chaco region, regarded by some as constituting a separate species. Lone record from E Formosa (N Argentina) may be referable to race pallescens. Proposed race veraguensis (W Panama) indistinguishable from costaricensis; proposed race casaresi (NW Argentina) synonymized with pallescens, as claimed larger size of casaresi not supported by recent study#R; purported race extimus, known only from type locality (R Alto Paraná, in SE Paraguay), likewise inseparable from pallescens and described from a series of specimens that were probably mislabelled. Nine subspecies recognized.
Food and feeding
Status and conservation
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