Infraorder Phthiraptera Haeckel 1896 (parasitic louse)
Parent taxon: Troctomorpha according to R. S. de Moya et al. 2020
See also Johnson et al. 2004 and Kukalová-Peck and Lawrence 2004
Sister taxa: Amphientometae, Liposcelidetae, Manicapsocidae, Nanopsocetae, Pachytroctetae, Sphaeropsocetae
Subtaxa: Amblycera Anoplura Ischnocera