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| Syrphid fly larvae, shown here with aphids. (Syrphid flies are also known as hover flies or flower flies.) Photo: U of MN Department of Entomology | |
| Size: Up to 3/8 inch long | |
| Where/When: Found on plants in many types of environments, including gardens, landscape plants, and agricultural fields. Active from spring through summer. | |
| Significance: An important natural control agent. They feed primarily on aphids and other soft-bodied insects, such as scale insects. | |