Giant conifer aphid (Cinara spp.)
Pest description and damage These are large aphids, up to 0.2 inch in length. Their color may range from gray to brownish to dark. Aphids establish large colonies on the twigs but are found feeding on leaf scales. Their feeding and honeydew production can cause sooty mold problems on foliage and nearby surfaces and reduce the ability of plants to produce sugars.
For biology, life history, monitoring and management
See "Aphid" in:
Management-chemical control
See Table 1 in: