Russian Wheat Aphid
The Russian wheat aphid (RWA) occurs primarily in the Oklahoma Panhandle, and in the
Texas and Colorado High Plains. It 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.