Reserva Aguas do Brilhante, Itajai, Santa Catarina, Brasil - foto de Maria Isabel Weyermanns.
Quite excited about this one. The shape of the ostiolar canal is an important identifying feature. David Rider took a look at the photos and thinks this must be planifrons as well.
Pepsis thisbe
Source: Wikipedia
Pepsis thisbe, also known as Thisbe's tarantula-hawk wasp,[1] is a species of spider wasp in the family Pompilidae. [2][3] Females are 32-44 mm long with a dark blue body and orange wings. [4]
Description
The females of this species sport curly antennae, while the males' are straight. Males do not have stingers and females have ones about 7mm (1½ inch) in length. Adults are nectavores (feeding on flower material), but females hunt tarantulas as food for larvae, hence their name. They're found throughout the American Southwest in desert areas. [5]
Bumble Bee on White Prairie Clover in the native food forest