Schmutterer, H. 1952 Die Ökologie der Cocciden (Homoptera, Coccoidea) Frankens. 2. Abschnitt. [The ecology of the Cocciden (Homoptera, Coccoidea) Franconia. 2. paragraph.]. Zeitschrift für Angewandte Entomologie 33: 369-420, 544-584; 34: 65-100.

Notes: Both detailed and generalized observations on the ecology of 85 scale insects, with detailed descriptive information on 16, including 2 new species.