Insect Management Handbook

Lecanium spp.

See:

Common Pests of Nursery Crops

Cacaecimorpha pronubana

See:

Laurel, Portuguese (Prunus)-Carnation tortrix

Eriococcus azaleae

See:

Common Pests of Nursery Crops

Pest description and crop damage White, cottony sacs enclosing small, reddish eggs.

Management-chemical control

See:

Masonaphis spp.

See:

Common Pests of Nursery Crops

Pest description and crop damage Green, soft-body insects. White, cast skins are conspicuous. Usually found only on new tender growth.

Management-biological control

See:

Caloptilia syringella

Pest description and crop damage Slender and straw color. Cause leaf distortion.

Management-chemical control

See:

Chemical Control of Nursery Pests

For more information

Caloptilia syringella

For more information

See:

Lilac (Syringa)-Lilac leafminer

Leucoma salicis

Pest description and crop damage Brownish caterpillars with white spots on back.

Management-chemical control

See:

Chemical Control of Nursery Pests

Spray in late summer when larvae are seen.

For more information

Cryptorhyncus lapathi

Pest description and crop damage Larvae bore under bark and into wood. They weaken and break limbs.

Scouting and thresholds Entry holes and borer damage greatly affect marketability; action thresholds are very low. Prevention is key.

Management-cultural control

Keep trees vigorous.

Management-chemical control

Lepidosaphes ulmi

See:

Common Pests of Nursery Crops

Pemphigus spp.

See:

Common Pests of Nursery Crops

Pest description and crop damage Aphids cause flask-shape galls on leaf petioles. Galls are not hazardous to trees.

Management-chemical control

See: