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Plodomor Resseliella skuhravyorum

Resseliella skuhravyorum

Popis druhu

It is a serious larch-cone pest.  The swarming season of this cone scale midge is in April and corresponds with the larch blooming period. The females oviposit on sprouting cones. After hatching the tiny bright orange larvae, only 2-3 mm in size even in maturity, tunnel deep into the cones to feed till mid-August.  The mature larvae leave the cone and spend the winter buried in the ground litter. The cone surface is discoloured brown, distorted, with no evident frass or excessive formation of resin. When cross-cut, damage is apparent inside. Affected may be the seeds, medulla and cone scales. The species has one generation in a year.

Symptóm

Žer vo vnútri šišky, poškodený stržeň.

Ohrozené dreviny: Smrekovec

Miesto poškodenia: Plod/Semeno

Významnosť: Menej významný

Kategória škodcov: Hmyz

Zistený na Slovensku: Áno

Invázny druh: Nie

Zistený v EÚ: Áno