Cornicles are very short, rounded, and appear to be lacking. There is an appendage above the cauda giving the aphid the appearance of having two tails. The saliva of this aphid is toxic to the plant and causes whitish striping on cereal leaves.
Cornicles are extremely short and rounded, giving an impression of being absent. There is a structure above the cauda that gives the aphid a dual-tail appearance. The aphid's saliva is harmful to plants and causes white streaking on cereal leaves.