Insect Management Handbook

Bow-legged fir aphid (Cinara curvipes)
Giant conifer aphid (Cinara spp.)

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Dioryctria spp.

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Adelges piceae

Mindarus abietinus

Numerous species

Pest description and damage Identification is important as different species differ in susceptibility to pesticides. Adult weevils are dark colored, nocturnal beetles, from 0.2 to 0.25 inch in length, with a snout (rostrum) and elbowed antennae. Look for ragged notches on the edges of leaves, or flower petals. Larvae are C-shaped, legless, and white, sometimes reddish, with tan heads, up to 0.5 inch in size.

For biology, life history, monitoring and management

Unaspis euonymi

Pulvinaria floccifera

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Nymphalis antiopa

Image related to Elm (Ulmus)-Spiny elm caterpillar (mourningcloak butterfly)

Lepidosaphes ulmi

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Hyphantria cunea

Image related to Elm (Ulmus)-Fall webworm