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Redheaded Pine Sawfly

Newly hatched larvae are white, unspotted, and have a brown or black head. As larvae feed and mature, they develop a red head and two to four rows of brown/black spots on the yellow body. Young larvae eat the outside of the needles, leaving behind brown, straw-like needles, while older larvae consume the entire needle. Birds, rodents, parasites, viruses, and other predators can help decrease sawfly populations but are often not enough to manage the pest in a plantation setting. Spot treat young larval infestations with a registered virus or insecticide labeled for sawfly control. Chemical treatment may be needed more than once per season.