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Willow Flea Weevil



P_wllowfleaweevil

Willow Flea Weevil

Usually appear in

Spring to Autumn.


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Caused By:-     The Weevil Isochnus(Rhynchaenus) rufipes

Description

Willow, bayleaf, cherries, plums, and poplar leaves may be severely damaged by these small insects from mid-summer on. Eventually the leaves blister, turn brown and drop off early in the autumn. Adults are tiny, elliptical, black weevils, about 3mm long, with orange legs that eat out tiny holes in the leaves from the underside leaving only the top surface above the holes. The overwintering adults emerge in early May, from the ground litter or bark crevices, as new leaves are developing and continue making holes in the leaves until July. Eggs are laid in small masses inside the leaves in early June. Larvae soon hatch and feed as leaf miners within the leaf tissue. Larvae pupate in the mines and emerge as adults in August at which time adults are again plentiful and eating holes in the leaves again. With cold temperatures the adults hibernate for the winter in bark crevices or leaf litter.
See these other Weevils Apple Blossom Weevil, Beech Leaf Mining Weevil, Figworth Weevils, Gorse Seed Weevil, Leaf Weevils, Nut Weevil, Pea and Bean Weevil, Turnip Gall Weevil, Vine Weevil, Weevils.


Control

Spraying with a knock down insecticide in spring when the adults are emerging may be the only option. After the eggs are laid the main problem is that the young larvae are inside the leaves and therefore a systemic insecticide will have to be used. Biological control may be possible with certain wasps or fungus like Bacillus thuringiensis.



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