Green apple aphid

Aphis pomi

The green apple aphid is the most common aphid pest of apples in Utah. The green-colored young, called nymphs, begin to hatch from overwintered eggs as early as silver tip, but populations generally do not begin to build until late May to early June when shoot leaves are rapidly expanding. During spring and summer, females produce live young without mating. Aphids can complete a life cycle in as short as 1 week during the warm summer months. The short generation time and ability of these aphids to reproduce asexually allows them to rapidly increase their populations and feeding injury to apple trees.

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