Violet gall midge

Violet gall midge, Prodiplosis violicola, was once considered the most important pest of the Violet industry. This pest has become uncommon in recent times.

Feeding from the midge larvae causes the leaves to roll and split into 2 bladder-like sacs. The petiole of the leaf is shortened and becomes thick.

Cultural control practices include removal and disposal of all infested leaves. Established and otherwise healthy plants usually survive.

Orginal publication: 5-7-2009

Latest update: 3-19-2019

Author: R.L. Rosetta, Extension Nursery Integrated Pest Management, Department of Horticulture, Oregon State University

Violet gall midge adult

Violet gall midge adult

Violet gall midge damage

Violet gall midge damage

Violet gall midge damage

Violet gall midge damage

Violet gall midge damage

Violet gall midge damage

Violet gall midge damage (section)

Violet gall midge damage (section)