Morrison, H., & Morrison, E.R. 1923 The scale insects of the subfamilies Monophlebinae and Margarodinae treated by Maskell.. Proceedings of the United States National Museum (Washington) 62: 1-47.

Notes: Describes 3 new genera, 3 new species; redescribes 8 species, notes on 7 others; keys to 5 Monophlebulus and 5 Callipappus.