Vesperus xatarti , known as castañeta , is a species of beetle insect in the family Vesperidae . These longicorns are distributed throughout peninsular Spain and the Balearic Islands and in the south of France .
The chestnut measures between 18 and 30 mm , with adults being active all year round except in the middle of summer; causes significant damage to the olive tree . The females have an ovipositor and lay in groups on wood.
To combat it, the following methods can be used:
Monitoring the appearance of adults with traps.
Cultural methods: debarking.
Chemical fight: against neonatal larvae, with organophosphates (chlorpyrifos).
Biological fight: nematodes .
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