Dielis tolteca, the Toltec scoliid wasp, is a species of hymenopteran in the family Scoliidae. It is commonly found on plants in the genus Solidago.

Description and identification
Female D. tolteca have extensive orange on at least three tergites of the gaster. The first segment is variable from a complete band to no band at all, and every possible degree in between. The only other orange-marked ally, D. dorsata, has the orange restricted to the second and third tergites of the gaster.

Male D. tolteca have four pale yellow bands on both the tergites and sternites of the gaster and a yellow band on the pronotum. As with the females, the most similar species is D. dorsata, which has sparser setae on the external valve of the penis and lacks banding on the sternites. The males further share the paler markings with D. plumipes, a species that is sympatric in Texas and which has the clypeus and pronotum entirely black. Another ally, D. pilipes, has a fifth band on the abdomen (only shared with D. tejensis) and is structurally distinct from all other members of the genus by the microstructuring on the frons, propodeum, mesonotum, and hind tibiae.

Distribution
D. tolteca is mainly found in the Southwestern United States and Mexico but also occurs in Haiti.

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Parasitic wasps
Insects described in 1857
Taxa named by Henri Louis Frédéric de Saussure
Scoliidae
Insects of Mexico
Insects of the United States