Psyllaephagus sp. (Hymenoptera: Encyrtidae) is a newly recognized and important parasitoid of Cacopsylla chinensis (Yang Li) (Hemiptera: Psyllidae), pest pear orchards. Its parasitism potential rearing were studied in the laboratory. The studies showed that most suitable hosts fourth- fifth-instar nymphs psyllids (C. chinensis). development duration females males was 15.25 ± 0.37 13.57 0.27 day...

The species of pear sucker, also called psylla or psyllid, which are destructive insects belonging to the genus Cacopsylla (Hemiptera: Psyllidae) cause substantial damage tree plantations. Two consecutive years research were conducted on population structure and biological cycle in a small, elderly, unmaintained orchard northern Romania. Of two identified (C. pyri L. C. pyricola Forster), domin...

Pear psylla, Cacopsylla pyricola (Förster) (Hemiptera: Psyllidae), is a pest of pears, Pyrus L. (Rosaceae), throughout North America and western Europe. Previous studies in our laboratory showed that males of the overwintering form (winter morphotype) were attracted to volatile chemicals from pear shoots infested with post-diapause females. The current study shows that males of the summer morph...