Hylaeus (Planihylaeus) Houston 1981

Houston 1981. A revision of the Australian hylaeine bees (Hymenoptera: Colletidae) 2. Genus Hylaeus Fabricius: subgenera Analastoroides Rayment, Edriohylaeus Michener, Euprosopellus Michener, Euprosopis Perkins, Euprosopoides Michener, Gnathoprosopis Perkins, Gnathoprosopoides Michener, Hylaeorhiza Michener, Hylaeteron Michener, Laccohylaeus, subgen. nov., Macrohylaeus Michener, Meghylaeus Cockerell, Planihylaeus, subgen. nov., Sphaerhylaeus Cockerell and Xenohylaeus Michener. Australian Journal of Zoology Supplementary Series, No. 80 1981: 1-128