Fig 1
DESCRIPTION: The causal agent of these leaf rolls is a gall midge and where present can be quite abundant. Attacks can bring about premature leaf drop. In spring, adult females lay eggs on leaf tips, and larval feeding causes a rolling of leaflet margins which turn a paler green. There can be up to 4 generations per yer with the larvae of the last generation leaving the galls to overwinter and pupate in the soil. DISTRIBUTION: First described as new to Britain in 2007 this species seems to be spreading and present wherever the host is found. HABITAT: Found on the leaves of Black Locust.

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