Large raspberry aphid
appear in June and July and migrate to new canes or host plants where they produce wingless aphids again. In October to December winged aphids appear again [...] symptoms Large raspberry aphids rarely reach populations that are high enough to reduce yield by direct feeding damage. The major problem is the spreading [...] place by parthenogenesis, with unfertilized viviparous females continuing to produce new generations of females. Aphids moult four times before reaching