Lobesia botrana
The crossed grape ( Lobesia botrana ) is a butterfly (moth ) from the family of the winder ( Tortricidae ).
- 3.1 Flight time
- 6.1 Notes and references
Features
The moth has a five to six -millimeter body and a wingspan of 12 to 13 millimeters. The wings are mottled yellow-green to grayish.
Synonyms
- Lobesia vitisana Jacquin, 1788
Dissemination
The crossed grape occurs in all South and Central European wine growing regions. Furthermore, it is common in North Africa, Asia Minor and the Caucasus. The northern vineyards limit is not exceeded. In European vineyards up the kind occurs around since 1910 ( Switzerland ).
Way of life
The species is polyphagous (that focuses not only on vines ), nocturnal, lively and like to hike. The dolls crossed grape berry moth overwinter under the bark of the vine. It has been found on over 20 host plants of the following genera:
- Grapevines ( Vitis )
- Clematis (Clematis )
- Dogwood (Cornus )
- Honeysuckle ( Lonicera )
- (Viburnum )
- Privet ( Ligustrum )
- Gooseberry (Ribes )
- Ivy ( Hedera )
- Daphne (Daphne)
- Rosemary ( Rosmarinus )
- Barberry (Berberis )
Flight time
It forms two, in very warm years and three generations per year, which are differentiated according to the crawler in Heuwurm, sour worm and Süßwurm:
The flight times of the different generations often merge into each other and can not always be separated. Flight, mating and egg-laying take place mainly in the evenings.
Harmful effect
The grape crossed valid as of Monovalent grape berry moth as a pest in vineyards. The larvae of both winder infest the flowers and grapes and thereby reduce the yield. Infested grapes by feeding damage significantly more susceptible to gray mold (Botrytis cinerea). The infestation of Botrytis brings only a significant damage to the grapes.
Combat
The grape berry moth is controlled by insecticides, which are often used preventively. Alternatively, the population size is determined by pheromone traps and then fights the infection with targeted pesticides. When biological control is placed on the disrupter and various natural enemies.