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Call Toll Free
1-800-363-6684
Kelowna
3335 Sexsmith Road
Kelowna, BC V1X 7T5
(250)491-3016
Penticton
272 Dawson Avenue
Penticton, BC V2A 3N6
(250)490-3572
Osoyoos
11401-115th Street
Osoyoos, BC V0H 1V5
(250)495-2555
Spray Lines
Kelowna
763-1946
Winfield
766-2577
Vernon
549-1422
Penticton & Area
487-7516
Osoyoos & Area
495-6518 or
498-3491

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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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Copyright 2004 Okanagan-Kootenay
Sterile Insect Release Program
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