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Pontania proxima

Sawfly Pontania proxima

Description

The gall is of a bean-like shape, 0.5-0.8 cm long, visible on both the upper and the lower side of a leaf. The surface is shiny, usually with a shade of red (sometimes also completely red). The only one green larva, which lives inside, usually forms a small opening on the lower side of the gall. It is common on most species of willows occurrence.  

Symptom

Galls on the leaf. The gall is of a bean-like shape, 0.5-0.8 cm long, visible on both the upper and the lower side of a leaf.

Tree Species: Willow

Part of a plant- attacked: Leaf / Needle

Pest significance: Less harmful

Pest Category: Insects

Invasive Species: No

Present in EU: Yes

Seasonal frequency of occurrence

Seasonal frequency of occurrence