Arthropod pests reduced overall yield by 4.53% in 2001. Acreage and yields were up in most of the cotton production areas in the US. Alabama at 9.19% reported the greatest percentage loss to insects in 2001. The bollworm/budworm complex was the top pest of 2001 taking 1.228% of the crop. About 64% of the US crop was infested with the complex of which 72% were bollworms. No other pest exceeded 1% reduction. Fifty-five percent (55%) of US cotton acres was infested by Lygus which reduced yields by 0.982%. Stink bugs, a heavy hitter in the east, was fourth at 0.768% reduction. These pests continue to expand. They infested 42% of the US crop in 2001. Thrips at 0.795% loss was 3rd and aphids at 0.275% were 5^th. Cotton fleahoppers (0.126%) were 6^th in the pest loss rankings. Boll weevil at 0.097% were almost a non player infesting 2.69 million acres. Silverleaf whitefly (0.08%), pink bollworm (0.39%), and beet armyworm (0.031%) complete the the top ten insect pests of 2001. Total cost of management and loss to insects to the 2001 crop was $1.158 billion or $78.60 per acre. Of those costs approximately $52 are direct insect management costs.