Gustafsson, D.R., Najer, T., Zou, F. and Bush, S.E. 2022. New species of Philopterus Nitzsch, 1818 (Ischnocera: Philopteridae), with notes on Cypseloecus Conci, 1941. European Journal of Taxonomy. 790, 1 (Feb. 2022), 1-52. DOI:https://doi.org/10.5852/ejt.2022.790.1641.