Stenonartonia is a South American genus of potter wasps.

The 15 known species of Stenonartonia are distributed across forested areas east of the Andes, with diversity concentrated on two areas: the Amazon basin and South-eastern Brazil.

Stenonartonia belongs to a group of genera with axillary fossa tending to be closed by the nearby structures.

Those species in the group of Stenonartonia polybioides have further developed transparent pockets visible under the surface of the scutellum.

Symbiotic mites get sheltered into those pockets and are sometimes visible under the cuticle.