Trioza centranthi is a sap-sucking hemipteran bug in the family Triozidae which creates galls on the leaves and flowers of Centranthus and Valerianella species.

[1][2][3][4] It was first described by Jean Nicolas Vallot, a French entomologist in 1829 and is found in Europe.

The flowers can also be affected and are a tangled leafy mass (phyllanthy).

[1] Plants galled include Centranthus angustifolius, C. calcitrapa, red valerian (C. ruber), Fedia cornucopiae, Valerianella carinata, V. coronata, V. dentata, common cornsalad (V. locusta) and V.

[5] Trioza centranthi is found in Europe from Great Britain and France in the west to Ukraine in the east.