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Description: Wingspan 5/8-3/4 " (15-20 mm). Body and forewings brownish gray; forewings have fine net-like lines; outer and basal 1/3 darker, many metallic scales in outer 1/3. Hind wings brown, bordered by paler fringes.

Habitat: Fruit orchards, especially apple and pear.

Range: Throughout North America.

Food: Caterpillars of 1st generation feed in developing fruit; 2nd generation feeds in mature fruit.

Flight: Spring-fall.

General: The small, grub-like caterpillars destroy the commercial value of fruit. The caterpillars overwinter in cocoons in tree crotches, bark crevices, among grass and weed clumps, in litter on the ground, or in other objects near trees. They pupate in spring, with adults emerging in about 20 days often when apple trees begin to expand leaves and open flowers. The presence of larvae can be recognized by holes in the fruit skin and quantities of fecal wastes deposited in the core and often pushed out of the hole, this is often called frass. Often damage is also seen as "stings" or circular reddish spots on the fruit surface. Look for damage on the skin surface and at the calyx end of the fruit (opposite stem end). Infestations are often concentrated in the upper portions of the tree canopy. Watch for fruit that is not uniform in colour. The injury caused by the feeding larva causes premature ripening of the fruit around the entry hole. Carefully slice open the fruit to look for larvae inside. In the early stages of infestation, the larva will be very small and near the surface of the fruit. However as the larvae develops, it moves to the center of the fruit to feed on the seeds. Young larvae are white with a black head and about 1/10 inch (2-3mm) long: mature larvae area pinkish white with a brown head and about 1/2 to 3/4 inch (12-20mm) long

 

 
 

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