Danzig, E.M. 1961 On food forms of Eulecanium franconicum (Lndgr.) (Homoptera, Coccoidea).. Entomologicheskoe Obozrenye 40: 571-576.

Notes: Describes and otherwise differentiates 2 new plant-host associated forms of Lecanium franconicum Ldgr.: calluneti and vaccinicola.