Foxglove aphid

Distribution. This aphid is globally distributed, located in all but the coldest terrestrial habitats.
Host associations. It has one of the broadest host ranges of any aphid, having been recorded from species of over 82 plant families, including monocots and dicots.
Symptoms. Light infestations of A. solani can severely injure potato foliage. Its feeding causes discoloured spots on tobacco, and heavily infested plants can show large necrotic areas, sometimes resulting in the senescence of the entire leaf. Feeding also causes irregular curling of young potato leaflets and it is speculated that growth of the leaflet is hindered as a result of the feeding puncture. In potato stores, A. solani can attack potato sprouts.
Indirect damage is caused by honeydew production and virus transmission. Honeydew, a sticky liquid excreted by the aphid, covers the foliage and is often colonized by black saprophytic fungi, hampering respiration and photosynthesis.