Vacante, V. 1985 Acari simbionti di Diaspididae (Rynchota, Homoptera) in Sicilia: rilevamento delle specie. Io contributo. [Mite symbionts of Diaspididae (Rynchota, Homoptera) in Sicily: a survey of the species. First contribution.]. Atti XIV Congresso Nazionale Italiano di Entomologia, Palermo, 1985 741-747.

Notes: Conference held on May 28-June 1, 1985. Comstockaspis perniciosus (Quadraspidiotus perniciosus) is the most common, widespread and active host species; on apple and pear.