Faber, T., & Sengonca, C. 1996 Verbreitungsgebiet der erst in jüngerer Zeit nach Deutschland eingeschleppten Wolligen Napfschildlaus Pulvinaria regalis Canard an Park- und Alleebäumen.. Gesunde Pflanzen 48(6): 221-223.

Notes: Title in English: [Distribution area of the recently introduced horse chestnut scale insect Pulvinaria regalis Canard on urban trees in Germany.] In the present study the distribution area of the horse chestnut scale insect Pulvinaria regalis Canard in Germany was investigated by a survey of towns with populations larger than 100,000.