n African Entomology - Field biology of woolly apple aphid, (Hausmann), and its natural enemy, (Haldeman), in apple orchards in the Western Cape Province




The seasonal cycles of (Homoptera : Aphidiae) and its natural enemy, (Hymenoptera: Apelinidae), were studied in the Western Cape Province region of South Africa. Crawlers of migrated from the roots into the apple trees during spring to initiate above-ground colonies. Population numbers peaked at the end of summer. became active from February until June. numbers declined with the onset of winter but a few colonies remained on apple trees during winter.


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