I viewed this colorful insect with a wary eye since red and black tend to be warning signs in nature. Turns out that Common Thread-waisted Wasps (Ammophila procera) are relatively harmless as the adults mainly feed on nectar. Vocab word of the day: petiole is the narrow waist in between the abdomen and thorax.
Unlike the male, the female has an ovipositor, which is used for egg-laying (and stinging, when necessary). She does all her parenting upfront: paralyzing a caterpillar, dragging it into a sandy burrow, inserting a single egg, and sealing the burrow, before flying away.
When the larva hatches, it consumes the (immobile but still alive) caterpillar from the inside out. Makes me glad I’m not a caterpillar!