The Lobesia botrana known as grape moth-key pest is in the vineyard. It is a lepidopteran with twilight habits. During the wine growing season there are normally three generations, however, in longer summers and with persistently high temperatures, a fourth generation begins.
The damage caused by moth caterpillars is very irregular, varying between the various generations and from one year to the next. There is no direct relationship between the importance of the three generations, nor between the adult populations and the number of nests and perforations in the bunches.