بررسی زیست شناسی شپشک ستاره‌ای انجیر Ceroplastes rusci L. (Hom.: Coccidae) روی درختان انجیر شهرستان پل دختر لرستان

The fig wax scale insect, Ceroplastes rusci L. (Hemiptera: Coccomorpha: Coccidae) is considered as a serious pest of fig that by feeding from young shoots, leaves and fruits cause damage. In this study, the biology of pests on fig trees at 1394-1396 in Poldakhtar city was investigated. For this purpose, after weekly sampling, leaves and tip branches of orchard trees were randomly collected and transferred to the laboratory. The living population, including nymphs, adult females and eggs inside the adult insect's body was counted and the pest's life cycle and seasonal population changes were also investigated. The results of this study showed that this depositor reproduces via vivioporous method and due to the long shelf life of first-generation nymphs, generational interference will occur in next generations. In Poldakhtar condition at the time of our investigation, all the biological stages of the insect can be seen simultaneously. surveying of insect population changes also showed that the pest has three complete generations. this pest mates as a adult female and spends the winter in holes, crakes and under tree skins. Three peak points were observed in the population of nymphs and adult insect. The maximum population of nymphs in the first generation was observed in early July, the second generation in late August and the third generation in mid-November. The adult insect population had three peak points in early April, August (highest) and February.