Adult canola flower midges appear similar to swede midge (Contarinia nasturtii). They are tiny, delicate flies, 2-5 mm in size. They can be differentiated from swede midge based on the appearance of the female antennae, the damage symptoms they produce and genetically.
Many thanks to Scott Meers and Shelley Barkley (Alberta Agriculture and Forestry) for organizing the Alberta surveys for the canola flower midge.
Submitted by Dr. Boyd Mori and Dr. Meghan Vankosky
Find out more about the insect pests that plague your crops and the natural enemies that keep them in check at the Insect of the Week page!
|“Pop-bottle”-shaped galls created by the canola flower midge.|
(c) 2016 Boyd Mori, AAFC