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The adult moth have a wingspread of about 1/2 inch and vary considerably in color. The front wing may be brown , or almost red. The hind wings are almost black. The most distinctive feature of this moth is the presence of two gold metallic bands on the wings. The larvae have creamy bodies and brown head. When full grown , they are 1/2 to 5/8 inch long.

Biology and Damage

C.latiferreana overwinter as diapausing larvae in silk cocoons. The cocoons are found in leaves and debris on the ground or in cracks and crevices of other shelters. Some larvae hibernate 1 to 2 inches below the soil surface. The larvae pupate within their cocoons and adults emerge 2 to 5 weeks after pupation occur.Most of the larvae change to pupae by the end of June. Adults emerge and fly from the middle of June until the end of October. The eggs usually are deposited during the wormest part of the day, on pleasent sunny days. They are laid singly on leaves close to nuts and occasionally on exposed parts of the nuts itself. The eggs hatch in 8 to 10 days and larvae do little feeding during searching period. The larvae tunnels through the husk and continues along the filbert shell until resching the micropile or soft spot. Occasionally nut entry is incomplate and the larvae moves on to other nuts. Larvae mature in 3 to 4 weeks. Mature larvae may leave the nut either by enlarging the entrance hole or by making a new opening on the side of nut. Larvae that have left the nut then form a cocoon where they spend the winter either in the soil or on ground debris.A few of the early emerging larvae pupate soon after cocoon formation and may emerge as adults in September. This pest is only present in orchards of North America.

Damage is caused by the larvae feeding on kernels within the shell. After hatching the young larvae seek nut clusters and during the search they do a little feeding mostly on the nut surface.

Common Names

USA: Filbertworm.