Effects of sticky banding of custard apple tree trunks on ants and citrus mealybug, Planococcus citri (Risso) (Pseudococcidae (Hem)) in south-east Queensland.
The application of sticky bands to the trunks of custard apple trees in south-eastern Queensland in 1979-80 reduced the numbers of ants (Pheidole megacephala (F.)) in the trees and resulted in lower, though still unacceptably high, levels of infestation by Planococcus citri (Risso). Although there were more mealybug predators (especially Oligochrysa lutea (Wlk.), Cryptolaemus montrouzieri Muls. and Syrphus sp.) on treated than untreated trees, natural enemies were ineffective. Parasitism of P. citri (by Leptomastidea abnormis (Gir.)), was low and was unaffected by banding.