Monday, October 5, 2020

[Ornithology • 2020] Type Specimens Matter: New Insights on the Systematics, Taxonomy and Nomenclature of the Subalpine Warbler (Sylvia cantillans) complex


Sylvia subalpina Temminck, 1820

in Zuccon, Pons, Boano, ... et Brambilla, 2020. 

Abstract
We revise the taxonomy of the Sylvia cantillans complex, a group of phenotypically distinct warblers with mainly parapatric distributions around a large part of the Mediterranean basin. We redefine the species limits using a combination of mitochondrial and nuclear markers and we objectively link available names to the genetically defined lineages by genotyping the surviving type specimens. In addition, the study of archival documents clarifies the exact composition of type series and provides further evidence for the identification of lost types. These results support the recognition of three species-level taxa: Moltoni’s warbler, Sylvia subalpina (north-central Italy, Corsica, Sardinia and the Balearics); the western subalpine warbler, S. iberiae (North Africa, Iberia, southern France and extreme north-west Italy); and the eastern subalpine warbler, S. cantillans, with subspecies S. cantillans cantillans (southern Italy, Sicily) and S. cantillans albistriata (Balkans, Greece, western Turkey).

Keywords: species limits, Sylvia cantillans, taxonomy, types


Neotype of Sylvia subalpina Temminck, 1820, MSNM Av37427, ventral (A), lateral (B) and dorsal (C) views.
The images were calibrated with the Xrite ColorChecker.

....

In conclusion, we recommend the recognition of three species in this complex: 

Sylvia subalpina Temminck, 1820 (Moltoni’s warbler), 
monotypic north-central Italy, Corsica, Sardinia, 
Balearics Synonyms: Sylvia subalpina Temminck, 1820 Sylvia subalpina inornata Tschusi, 1906 Sylvia cantillans moltonii Orlando, 1937 

Sylvia iberiae Svensson, 2013 (western subalpine warbler), 
monotypic North Africa, from Tunisia to Morocco, Iberia, southern France, extreme north-west Italy 
Synonyms: Sylvia inornata iberiae Svensson, 2013 

Sylvia cantillans (Pallas, 1764) (eastern subalpine warbler), 
polytypic 
Sylvia cantillans cantillans (Pallas, 1764) 
southern Italy, Sicily 
Synonyms: Motacilla cantillans Pallas, 1764 Sylvia leucopogon ‘Heckeli’ Schinz, 1821 Sylvia leucopogon ‘Heckeli’ Meyer B, 1822 
Sylvia cantillans albistriata (Brehm CL, 1855) 
extreme north-east Italy, Balkans, Greece, western Turkey 
Synonyms: Curruca albistriata Brehm CL, 1855


Dario Zuccon, Jean-Marc Pons, Giovanni Boano, Giorgio Chiozzi, Anita Gamauf, Chiara Mengoni, Davide Nespoli, Georges Olioso, Marco Pavia, Irene Pellegrino, Marko Raković, Ettore Randi, Hamid Rguibi Idrissi, Moez Touihri, Markus Unsöld, Severino Vitulano and Mattia Brambilla. 2020. Type Specimens Matter: New Insights on the Systematics, Taxonomy and Nomenclature of the Subalpine Warbler (Sylvia cantillans) complex. Zoological Journal of the Linnean Society. 190(1); 314–341. DOI:  10.1093/zoolinnean/zlz169