Black bean aphid
is widespread in temperate regions, where it is a serious economic pest of beans. It is highly polyphagous, and attacks a wide range of other crops. Damage [...] therefore need to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit [...] crops. At the same time, photosynthesis in the leaves is reduced, affecting production. Life cycle and appearance of Black bean aphid Aphids have a complex