Russian Wheat Aphid (Diuraphis noxia)
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The Russian wheat aphid (RWA) occurs primarily in the Oklahoma Panhandle, and in the Texas and Colorado High Plains. The RWA is pale green in color and "spindle shaped" with a waxy coating that gives it a powdery appearance. It does not have prominent cornicles (the tail pipe looking projections that occur on the rear end of the other aphid species that infest wheat). Damage symptoms appear as visible white, yellow, or purple longitudinal streaks on the leaves and stems of wheat plants. Use the RWA Economic Threshold Calculator and Glance 'n Go sampling to determine the need for insecticidal treatment in wheat.


For more information visit OSU Fact Sheets.

 

 

THIS INTEGRATED PEST MANAGEMENT SOFTWARE IS BASED ON EMPIRICAL DATA OBTAINED THROUGH MANY YEARS OF RESEARCH. HOWEVER, NEITHER THE USDA, OKLAHOMA STATE UNIVERSITY, OR SST DEVELOPMENT GROUP, INC. WARRANT THE VALIDITY OF THE INTEGRATED PEST MANAGEMENT SOFTWARE AND MAKE NO REPRESENTATIONS WHATSOEVER WITH REGARD TO THE USE OF THE SOFTWARE FOR PEST MANAGEMENT. FURTHER, USDA, OKLAHOMA STATE UNIVERSITY AND SST DEVELOPMENT GROUP, INC MAKE NO WARRANTIES AS TO THE MERCHANTABILITY OR FITNESS OF THE INTEGRATED PEST MANAGEMENT SOFTWARE FOR ANY PARTICULAR PURPOSE, OR ANY OTHER WARRANTIES EXPRESS OR IMPLIED. If you have any questions concerning this site please contact Tom Royer at Tom.Royer@okstate.edu

   

Russian Wheat Aphid

 

Russian wheat aphid damage to wheat.

 

 

Russian wheat aphid on wheat.