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house fly (Musca domestica)

Closeup of a house fly perched on a green leaf. The fly has large red eyes, black legs and head, a black thorax with light brown stripes, a light brown abdomen, and smoky translucent wings.

Thus far overshadowed by its cousin the black soldier fly, the house fly (Musca domestica) offers similar potential for recycling waste generated in livestock production, a new study shows. House fly larvae are chock full of protein to juice up feed and fat to produce biodiesel, while their droppings, called frass, can be used as a soil amendment. Manure digested by house fly larvae yields biomass comprised of 55 percent to 63 percent protein and 15 percent to 23 percent fat, and the fat from larvae can be processed into biodiesel. (Photo by Nikolai Vladimirov via iNaturalist, CC BY-NC 4.0)

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