Notes on Raspberry Insects
Cane Borer
Identification
This pest is a slender, dark coloured beetle, about 12 mm long, with
antennae as long as its body. Larvae are white, cylindrical and legless.
Adult females chew two zipper-like rings around the tips of raspberry
primocanes and lay an egg between the punctures. The tip wilts above the
point of injury and eventually dries up.
Symptoms of raspberry cane borer
Period of Activity
The beetles are active in late June, July and August. Primocanes wilt
immediately after egg-laying occurs. The larvae tunnel down the canes
and overwinter near the base inside the cane.
Management notes
There are no insecticides labelled for control of this pest.
- Examine canes frequently in June and July for injury.
- Cut off wilted tips below lower ring as they appear and burn them.
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