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Campagna, Geale, Handford, Lijtmaer, Tubaro & Lougheed 2011. A molecular phylogeny of the Sierra-Finches (Phrygilus, Passeriformes): extreme polyphyly in a group of Andean specialists. Mol Phylogenet Evol: in press. [abstract]
Thanks Richard, the perhaps inevitable...(my bold):
.."Finally, we explored whether Phrygilus species, especially those with broad altitudinal and latitudinal Andean distributions, showed phylogeographic structure. Our best-sampled taxon (P. fruticeti) exhibited no clear pattern; however, we found deep genetic splits within other surveyed species, with P. unicolor being the most extreme case and deserving of further research."
Divergence in P unicolor was observed between individuals from S Peru (Cusco & Puno - presumably inca) / N Argentina (Catamarca - presumably tucumanus) and individuals from N Peru (Cajamarca & Huánuco - presumably inca). So probably not a neat divergence between existing sspp.
Campagna, Geale, Handford, Lijtmaer, Tubaro & Lougheed 2011. A molecular phylogeny of the Sierra-Finches (Phrygilus, Passeriformes): extreme polyphyly in a group of Andean specialists. Mol Phylogenet Evol: in press. [abstract]
Álvarez-Varas, González-Acuña & Vianna (in press). Comparative phylogeography of co-distributed Phrygilus species (Aves, Thraupidae) from the Central Andes. Mol Phylogenet Evol. [abstract]