Ferris, G.F. 1955a . Atlas of the Scale Insects of North America, v. 7, the Families Aclerdidae, Asterolecaniidae, Conchaspididae Dactylopiidae and Lacciferidae. iii. Stanford University Press Palo Alto, California 233 pp.

Notes: Varied taxonomic treatment for 168 scale insects in 21 genera; 4 new genera and 18 new species described.