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Rhomb tensioner

The rhomb moth is a butterfly (moth) of the moth family and is widespread in Central and Southern Europe. Its caterpillar (also known as the creppelworm) is a pest on numerous plants including grapevines. It overwinters as a young caterpillar in the bark on the stem and in the foliage.

Rhombenspanner - Raupe vor der ausgehöhlten Knospe.

In March to April, the grey-brown caterpillars infest the buds. These are hollowed out like holes so that no more shoots can develop. On older shoots, the caterpillar can no longer cause feeding damage, which is described as "the shoot grows out of the rhombic moth's mouth" . Due to the deceptively similar camouflage of a twig, they are hardly recognisable. When feeding, the hind legs are pulled towards the front legs, which results in the cat-hump-like appearance. The picture above shows a caterpillar in front of the bud it has hollowed out.

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