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Issue: Vol. 5383 No. 4: 13 Dec. 2023
Type: Article
Published: 2023-12-13
DOI: 10.11646/zootaxa.5383.4.3
Page range: 476-490
Abstract views: 932
PDF downloaded: 23

The type of Setophaga ruficoronata (Kaup 1851) is a hybrid: implications for the taxonomy of Myioborus warblers (Passeriformes: Parulidae)

Instituto de Ciencias Naturales; Universidad Nacional de Colombia; Bogotá; Colombia
Committee on Evolutionary Biology; The University of Chicago; Chicago; IL 60637; USA; Field Museum of Natural History; 1400 S Lake Shore Drive; Chicago; IL 60605; USA
Aves birds Colombia Ecuador holotype hybridization ornithology type locality

Abstract

Hybridization, rapid diversification, and uncertainties surrounding type specimens add complexity to the already intricate taxonomy of high Andean Myioborus warblers of northern South America. In this study, we propose a reassessment of species boundaries within M. ornatus and M. melanocephalus, drawing on comparisons of name-bearing types. We also consider insights from a recent study of a hybrid zone in southern Colombia and northern Ecuador. We present three species delimitation alternatives that offer improved clarity compared to the current taxonomy, and discuss the rationale behind recognizing chrysops and bairdi as distinct species while redefining the species ornatus and melanocephalus, given the available evidence.

 

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