sheep blow fly

Sheep blow flies are a type of blow fly that specifically targets sheep. Blow flies, in general, are insects that play a crucial role as decomposers, rapidly breaking down carrion and other decaying organic matter, which aids in nutrient cycling.1

Adult blow flies have six legs and a body divided into a head, thorax, and abdomen. They are typically metallic blue, green, or black and are known for their noisy flight. Their larvae, commonly called maggots, lack true legs but may have prolegs for crawling. Maggots have a pointed head with mouth hooks and a blunt posterior end with spiracles for breathing.12

While most blow fly larvae feed on decaying matter, some species, like certain sheep blow flies, can infest soiled wool or wounds on sheep, causing a disease known as sheep strike. The larvae of some blow flies can also infest living tissues, a condition called myiasis, which can be harmful to livestock and humans. However, some blow fly maggots are used medicinally for wound debridement.21