Sulphur-rumped Myiobius (Myiobius sulphureipygius) [XC225996]
by Niels Krabbe from Bonampak, Chiapas, Mexico (call)
Sulphur-rumped Myiobius (Myiobius sulphureipygius) [XC262209]
by Patricio Mena Valenzuela from Esmeraldas: Agua Blanca, R\u00edo Chimbagal, Ecuador (call, calls)
Subspecies
Myiobius barbatus (Sibley and Monroe 1990, 1993) has been split into Whiskered Flycatcher (Myiobius barbatus) following Stotz et al. (1996) and Sulphur-rumped Flycatcher (Myiobius sulphureipygius) following Stotz et al. (1996) and AOU (1998), contra SACC (2005), pending the outcome of investigation into the taxonomy of this group by SACC.
Sometimes treated as conspecific with Whiskered Flycatcher (Myiobius barbatus). Subspecies aureatus thought by some to be possibly a separate species.
The following 2 subspecies are recognised:
sulphureipygius (P. L. Sclater, 1857) - South-eastern Mexico (from southern Veracruz and northern Oaxaca) southern on Caribbean slope to Honduras.
aureatus Bangs, 1908 - Southern Honduras southern on Caribbean slope, and locally on Pacific slope in Costa Rica and Panama, to Pacific lowlands of western Colombia and western Ecuador.