Last modified: April 13, 2021, 10:24 a.m.
Status in Belgium insufficiently known due to the similarity with Grapholita funebrana.
Hitherto, there is not any prove that the species occurs in Belgium after 2004 (no genitalia were studied on claimed specimens of G. molesta, and even individuals that were atracted by pheromones of this species, turned out to be Grapholita funebrana after study of their genitalia).
Native In Belgium since August 1945.
The first generation drills in the spring in the tips of new shoots of fruit trees. The boring is maximum six cm deep. Infested shoots wither and die off, to compensate, the tree partially forms several new shoots.
The following generations harm the fruits in summer. Outer feeding marks appear or drill holes with frass can be seen on the calyx, stalk or between touching fruits.
In the case of stone fruit, rubber flow exits the boreholes. The larva limits its feeding activity on the pulp and rarely penetrates to the core house.
The adults come to light and pheromones.
The adults fly in two or three generations a year: from late April towards early September.