Order
Passeriformes
Family
Furnariidae
Genus
Synallaxis
 
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Version 1.0

This is a historic version of this account.  Current version

SPECIES

Spix's Spinetail Synallaxis spixi

Teresa Pegan
Version: 1.0 — Published July 13, 2012

Systematics

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Geographic Variation

Monotypic. A subspecies, notius, was described from Argentina, but Hellmayr (1925) reported that he "cannot discern any constant difference, either in size or color, between specimens from Brazil, and Buenos Aires (notius Oberholser)" (Hellmayr 1925: 86).

Some earlier authors classified Synallaxis hypospodia (Cinereous-breasted Spinetail) as a subspecies of Synallaxis spixi (e.g., Hellmayr 1925).

Related Species

Described as Synallaxis spixi by Sclater in 1856, with a type locality of Brazil. The type is in the (British) Natural History Museum (Warren and Harrison 1971).

Some earlier authors classified Synallaxis hypospodia (Cinereous-breasted Spinetail) as a subspecies of Synallaxis spixi (e.g., Hellmayr 1925). Vaurie (1980) suggested that spixi was related to Synallaxis albigularis(Dark-breasted Spinetail) and to Synallaxis albescens(Pale-breasted Spinetail), based on similarities in plumage and tail structure.Phylogenetic analysis of DNA sequence data, from three mitochondrial genes and one nuclear intron, indicates that spixi is sister to hypospodia; this pair in turn is the sister to a small clade composed of albigularis, albescens, Synallaxis frontalis (Sooty-fronted Spinetail), Synallaxis azarae (Azara's Spinetail), and Synallaxis courseni (Apurimac Spinetail) (Derryberry et al. 2011).

Recommended Citation

Pegan, T. (2012). Spix's Spinetail (Synallaxis spixi), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/nb.spispi1.01