Woolly apple aphid
January 1, 1970
occur during the summer months, also on new growth. Water shoots arising from the trunk or main branches, are very frequently attacked. The aphids mainly [...] aphid In contrast to other aphids , the life cycle and survival from year to year of the woolly aphid depends entirely on wingless, parthenogenetic and viviparous [...] females of the woolly aphid are 1.2-2.6 mm long, purplish brown and covered by masses of white, mealy wax. The siphunculi are pore-like and the cauda is