Myzus cerasi F Cherry blackfly

This insect is a potentially serious pest of cherry, affecting both fruiting and ornamental species. In spring, the aphids form dense, ant-attended colonies at the tips of the shoots. They cause considerable distortion and interruption of growth; the aphids are also virus vectors. In summer, the aphids occur on various summer hosts, including Galium and Veronica; a return migration to primary hosts occurs in the autumn. Apterae are 1.5-2.6 mm long and mainly brownish-black to black. Alatae are slightly smaller and paler in colour.

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