Integrated Pest Management Guide

STRAW-COLOURED TORTRIX, Clepsis spectrana Treitschke

Pest Status: This leafroller, which attacks other fruit crops such as raspberry, strawberry and currant as well as white spruce and white cedar in the Pacific Northwest, is found occasionally in cranberries in British Columbia.

Life cycle and feeding habits: Larvae are dark chocolate-brown with tiny yellowish dots on segments along the side. Mature larvae are 12 - 15 mm (1/2 - 2/3 inch) long. Larvae have three pairs of front legs and five pairs of hind legs. Adults are nocturnal and readily attracted to lights. They fly from late March until early August. Larvae have been seen feeding on tips of hardhack (Spirea) on dikes. They roll and tie terminal leaves together and feed within this protected site. Larvae found in March have apparently overwintered from the fall generation of the previous year. Those found from May to August represent the current year's generations. There are two to three generations a year in British Columbia.

Monitoring: Larvae will be detected during fireworm monitoring.

Control: There are no insecticides registered for this insect on cranberry. Insecticides against blackheaded fireworm will provide some control.
 

Straw-coloured tortrix larva	Straw-coloured tortrix moth

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