Insect Management Handbook

Marmara arbutiella

See:

Common Pests of Nursery Crops

Pest description and crop damage The adult is a moth. Larvae of this leaf- and twig-mining moth blaze sinuous, serpentine mines across the undersides of leaves. Although damage is unsightly on individual leaves, they do not affect the long-term health of the tree. This moth affects madrone throughout its range.

Tetranychus spp.

See:

Apricot, flowering (Prunus)-Spider mite

Linden gall mite (Phytoptus tillae)

Pest description and crop damage A very tiny mite that causes red to greenish galls on leaves. Damage is seldom serious.

Management-chemical control

No controls are registered.

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Eucallipterus tiliae

Pest description and crop damage The linden aphid is green with black lateral stripes. The aphid feed in colonies on the undersides of leaves. Feeding damage to the plant is usually minor, although some leaf and shoot distortion can occur if populations are high. Aphid also produce honeydew, a sweet, sticky secretion that collects on plant tissues and encourages growth of a black sooty mold. This can interfere with photosynthesis of the plant.

Lepidosaphes ulmi

See:

Common Pests of Nursery Crops

Caloptilia syringella

See:

Common Pests of Nursery Crops

Pest description and crop damage Adult is a small, brownish moth. Greenish larvae mine and roll leaves down at tips. Leaf mining results in large, brown blotches. Ligustrum, Deutzia, Euonymus, Sorbus, and Fraxinus also may be attacked.

Synanthedon exitiosa

See:

Apricot, flowering (Prunus)-Peachtree borer

Cacaecimorpha pronubana

Oligonychus ununguis

See:

Common Pests of Nursery Crops

Management-chemical control

See:

Chemical Control of Nursery Pests

Often difficult to control unless the sprayer can drive the spray into dense foliage.

Dichomeris marginella