AVIAN SPECIATION IN THE PANTEPUI: THE CASE OF THE RORAIMAN ANTBIRD (PERCNOSTOLA [SCHISTOCICHLA] ‘‘LEUCOSTIGMA’’ SATURATA)

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Issue Date
2005-05Author
Braun, Michael J.
Isler, Morton L.
Isler, Phyllis R.
Bates, John M.
Robbins, Mark B.
Publisher
Central Ornithology Publication Office
Type
Article
Article Version
Scholarly/refereed, publisher version
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Show full item recordAbstract
We document the first records for Guyana of Roraiman Antbird (Percnostola [Schistocichla] “leucostigma” saturata), an endemic of the tepui highlands of southeastern Venezuela, northern Brazil and western Guyana. This form is well differentiated from nominate leucostigma (Spot-winged Antbird) of the Guianan lowlands in morphology, vocalizations, and genetics, and replaces it both altitudinally and ecologically. The two taxa are distributed parapatrically on the continuously forested northeastern slopes of the eastern tepuis, and they almost certainly come into contact, yet there is no evidence of intermediacy. We recommend that saturata be treated as a distinct species of Percnostola, and consider its' origin in the light of various models of speciation in the tepuis.
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Citation
Braun, Michael J., Morton L. Isler, Phyllis R. Isler, John M. Bates, and Mark B. Robbins. "Avian Speciation In The Pantepui: The Case Of The Roraiman Antbird (Percnostola [Schistocichla] “Leucostigma” Saturata)." The Condor Condor 107.2 (2005): 327. DOI:10.1650/7647
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