Dielis trifasciata, also known as the three-banded scoliid wasp, is a species in the family Scoliidae.

In males, the last three abdominal segments are black, and the scutellum has a single yellow band.

The males of D. t. trifasciata are distinguished from allied species in part by the extensively yellow clypeus.

[1] These parasitic wasps lay eggs on larvae of the scarab Phyllophaga portoricensis.

[7] Dielis trifasciata is present in southern Florida, the Bahamas, and in most of the Greater Antilles.