by Bruce Potter, Extension IPM Specialist and Bob Koch, Extension Entomologist Fig. 1. Gall midge larvae and damage under soybean stem epidermis. Rock County, MN. A new potential pest, the soybean (or orange) gall midge, is causing injury to soybean in parts of the Midwest. Reports of this insect from Minnesota soybean are summarized here. Please inform us if you are aware of any additional infestations in Minnesota soybean fields. Earlier this month, we received samples from a Rock County soybean field where stems were infested with small, pale to bright orange gall midge (Diptera:Cecidomyiidae) larvae (Figure 1).