Endoterapia Vegetal

Flathead oak borer

Flathead oak borer2019-02-28T13:35:45+00:00

Project Description

Beetle of the Buprestidae family that affects cork oaks. It has great importance in the forestry sector since it can devalue the market price of cork up to 75%.

The adult beetle is 10 to 16 mm long and elliptical in shape. It is metallic greenish-blue and has three lighter, very characteristic transverse sinuous bands on the back (Fig. a). Adults can live 3 weeks hidden in cracks in the bark and in bushes, feeding on leaves.

The larvae are quite elongated (they can reach 50 mm), slightly flattened, light in colour and with a larger head than the rest of the body; it has very visible jaws (Fig. b). The larval instar lasts from two to three years and develops under the cork bark, feeding on the cork layer closest to the sapwood and living conductive tissue, creating galleries of different diameters depending on their larval stage. They can make galleries that are over 2 m in length throughout their cycle.

The galleries that the larvae make in the cork during their development mean that the cork will not be suitable to make stoppers. It can only be used shredded for non-food products or products of a lower quality, thus considerably reducing its price (Fig. c).

Carry out a treatment with plant endotherapy (ENDOterapia Vegetal®) at the end of spring in a preventive or curative way to avoid or eliminate possible infestations. The treatment will act on the larvae when they feed on the living conductive tissue of the sapwood and the subcortical (under bark) cambium.

Project Details

Common name:
Scientific name:
Coraebus undatus.
Affected plants:
Quercus suber (cork oak).

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ENDOterapia Vegetal
C/ Ripollès, 23 - Pol. Ind. el Pla CP. 17486 - Castelló d'Empúries Girona - Spain
Tel.: +34 972 158 889 Fax: +34 972 158 890