Midges overwinter as adults. When the new foliage emerges in spring, females insert their eggs inside individual leaflets. The larvae soon hatch and immediately begin to feed on the inner leaflet tissue. Podgall midges may have five to seven generations annually.
Injured leaflets dry out to a reddish-brown color, and fall prematurely.
There are few cultural control methods for honey locust podgall midge. Prune out dead twigs and water regularly to promote new growth. While other methods for control of honey locust podgall midge are available, they are often not feasible either from economic or plant health care standards. For further information on Honey Locust Podgall Midge, contact the University of Wisconsin-Extension Office at 1304 S. 70th Street, West Allis, WI 53214. Copyright 1997, Division of Forestry.