Guimarães, L. R. Ischnocera (Mallophaga) Infesting Parrots (Psittaciformes). II. Genera Psittoecus Conci, 1942, and Forficuloecus Conci, 1941. Pap. Avulsos Zool. 1974, 28 (1-16 (1974-1975), 163-180. https://doi.org/10.11606/0031-1049.1974.28.p163-180.