“…) are open cups, and differ from the single known purse-shaped nest attributed to P. virescens, which we believe actually belongs to Phylloscartes ventralis (Castelino and Saibene 1989, see above). The phylogenetically isolated Gray-capped Tyrannulet (P. griseocapilla) was recently found to be sister to Zimmerius (Harvey et al 2020) and, accordingly, builds a distinctive globular nest made mostly of Tillandsia usneoides, unlike those of any Phyllomyias (Piato et al 2015, Legal 2018). The fourth group includes P. burmeisteri (nominate and zeledoni as sister), the Black-capped (P. nigrocapillus; type of the genus Tyranniscus, see Cabanis and Heine 1859), Tawny-rumped (P. uropygialis), and Ashy-headed (P. cinereiceps) Tyrannulets.…”