On the identity of Micrastur guerilla jugularis Gurney, 1884, with lectotype designation

Micrastur guerilla jugularis Gurney was described based on six specimens from widespread localities in South America and subsequently considered a junior synonym of Barred Forest Falcon Micrastur ruficollis (Vieillot). Nonetheless, it has not been discussed in relation to any of the taxonomic splits and descriptions of new species within the M. ruficollis clade in the last 50 years, despite being a potential senior synonym of M. mintoni Whittaker, 2003. To clarify the status of Gurney's name, here we report on the location and composition of the type series, confirm its mixed composition and, therefore, designate a lectotype that fixes the application of M. jugularis Gurney as a junior synonym of nominate M. ruficollis (Vieillot).