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Western Raspberry Fruitworm -
Byturus bakeri   Courtesy - A. Antonelli Courtesy - Gray   Courtesy - A. Antonelli 
HOSTS: Raspberries,
blackberries, and other cane fruit. DESCRIPTION:
Adults
are small brown oblong beetles ¼ to ½ inch long. The
adults cause characteristic slits in the leaves from their feeding and
destroy developing buds. The larvae feed within the blossoms and inside
developing fruit. LIFE
CYCLE:
Fruitworms overwinter as pupa and adult beetles emerge from the soil in
the spring. They feed on the leaves and lay their eggs near the fruit
buds. CONTROLS:
Pre-bloom
sprays of rotenone and pyrethrum can be applied as flower buds appear
and again before flowers are open to limit populations of adults. Since
fruitworms fall to the ground in mid-summer, fall fruiting cultivars
usually do not have a problem with this insect. Late summer tillage and
early spring tillage may destroy pupa in the soil. |
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