 Hessian fly larvae and damage Hessian
Fly Larvae are up to 2 mm long, white, and have a greenish stripe down the back. Adults are fragile, reddish-brown flies 2 to 3 mm long. Larvae feed in the stems at the plant crown, causing stems to break. When the dark brown pupa is found between the stems and leaf sheaths at the base of the plant, it is called the “flax seed” stage. Populations are higher on early seeded fall grains, late-seeded spring grains, and in no-till farming. Host plants: cereals, grasses.
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