Damage symptoms
The larvae of the carnation tortrix (Cacoecimorpha pronubana) feed on the upper surface, thereby producing holes. Finally, at the third larval instar, the whole leaf is attacked and surrounded by a dense silken mass. The larvae hide inside the rolled leaves, growing tips or flowers that have been spun together.
The feeding caterpillars of the carnation tortrix (Cacoecimorpha pronubana) damage flower buds, fruit and leaves. The buds are penetrated by the larvae. Petals may be joined by larval silk, thus hampering opening and giving flowers a characteristic swollen appearance. In some cases, it may not be apparent that flowers are infested. The species is particularly troublesome in the culture of carnations and strawberries in greenhouses; the damage inflicted to strawberries and other crops grown outdoors is less serious.