Many are attracted to the sticky honeydew waste product exudate from the aphids, which is so abundant that it has coated the leaves with a whitish sheen.
Ants, social wasps, parasitic wasps, Blue-bottles, Green-bottles, flesh flies, Sawflies and Hovers (amongst others!) are almost falling over each other to hoover up sugar from the surface of the leaves.
Other insects are attracted to the aphids themselves as a food source rather than the nectar, and home in on the smell of the aphids and the chemical defences that the tree employs in order to protect itself. Two-spot and Harlequin Ladybirds are wandering across the leaves, leisurely munching through their quarry, and egg-laying as they go.
|Harlequin Ladybird larva|
|V zonaria and Eristalsis pertinax|