Pest description and crop damage Tiny eriophyid mite, cigar-shaped but not visible to the naked eye, which causes, leaf rolling along the edges, and proliferation of florets and distortion of wheat heads. The pest is a vector of Wheat streak mosaic virus (WSMV), which can cause damage to small grains in some years. Late-planted spring and early-planted fall grains are susceptible to damage. More information on the management of wheat curl mites and WSMV is available at the University of Idaho bulletin 941 (BUL941; https://www.extension.uidaho.edu/publishing/html/BUL941-Wheat-streak-mos...).
Chemical control is not available. See cultural control in BUL941.