Mottled arum aphid
large amounts of honeydew, which provides an excellent substrate for the growth of black sooty mould. Large areas of mould covering the leaves can reduce [...] bands behind the head, broken along the midline, and a large horseshoe-shaped spot on the back of the abdomen. These black markings can be highly variable. [...] colonies of mottled arum aphids can greatly reduce plant vigour and kill the plant through sucking of plant sap. However, also at lower densities the aphids