Aphids are soft- bodied insects. The most common aphids found on winter grains in Georgia are the bird cherry-oat aphid, English grain aphid, corn leaf aphid and greenbug. The most prominent characteristic of aphids is the presence of cornicles located on the abdomen. Wheat, barley, oats, corn, winter grasses and some summer grains.
Aphids often congregate on new tissue and can be found deep within the plant near the growth whorl.
Damaged plants will often curl, wilt, and may die during periods of weather extremes. Plants infested with BYD will appear stunted and yellowish-purple in color and are subject to environmental stress. Aphid feeding and disease damage can significantly reduce yields. The most significant yield reductions occur when aphid infections develop in the fall on winter grains. Overwintering progeny are all females that give birth to living young.