Willow (Salix)-Aphid

Includes giant willow aphid (Tuberolachnus salignus)

Pest description and damage There are several species of aphids known to feed on the foliage, stems, flowers, or bark of willows. The largest of these soft-bodied piercing-sucking insects is the giant willow aphid. This aphid has a dark body that appears gray due to the many hairs; it also has conspicuous dorsal tubercles. This insect forms large colonies on the bark of willow, often most concentrated close to the ground. Damage seems minimal. There are a number of other species of aphids that infests willows with varying color patterns and preferences for feeding on bark, leaves, branches or new growth. Some produce more honeydew than others and some are regularly tended by ants.

For biology, life history, monitoring and management

See "Aphid" in:

Management-chemical control

See Table 1 in: