Ferris, G.F. 1950b . Atlas of the Scale Insects of North America. (ser. 5) [v. 5]. The Pseudococcidae (Part I). Stanford University Press Palo Alto, California 278 pp.
Notes: Characterization of family; key to 21 genera; descriptions and keys for 103 scale insects, including 18 new species, in 21 genera, 12 presented as new.