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Diplolepis eglanteriae

Gall wasp Diplolepis eglanteriae

Description

Gall wasp Diplolepis eglanteriae is a gall-inducing wasp species that targets rose leaves. The galls it forms are spherical and can appear on either the upper or lower surface of the leaves. Initially, the galls are light green, later turning red and eventually brown as they mature. Each gall contains a single chamber where the larva develops. The galls ripen in the summer and fall off the plant, with the larvae overwintering inside. The adult wasps emerge in May or June. After mating, females lay eggs on rose leaves, initiating a new cycle of gall formation. This species has one generation per year and feeds exclusively on roses.

Symptom

The galls it forms are spherical and can appear on either the upper or lower surface of the leaves. Initially, the galls are light green, later turning red and eventually brown as they mature.

Tree Species: Rose

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes