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Citrus belonging to family Rutaceae, is one of the most important fruit of the world grown in more than hundred countries. Citrus is affected by numerous species of insects, mites and disease pathogens that infest the leaves, flowers, bark, fruit, and branches of citrus. Among the citrus insect pests listed above, psylla, D. citri has been recorded most destructive and the losses ranged from 83-95 per cent. The population of psylla varied considerably among different months. After appearance from second week of January, the population reached at three peaks, first in March, second in June and...