Scarab-beetle-predator
Guides
Mydas clavatus
Clubbed Mydas Fly
Mydas clavatus is a large, striking mydas fly native to temperate eastern North America. Adults are notable Batesian mimics of spider wasps, displaying bold behavior enabled by their wasp-like appearance. The species is distinguished by a prominent orange to red abdominal marking and clubbed antennae—a trait shared across the genus. Adults are active in mid-summer and have been documented visiting diverse flowering plants for nectar.
Batesian-mimicrywasp-mimicpollinatorwoodboring-predatorMydidaeDipteraeastern-North-Americamid-summernectar-feederscarab-beetle-predatorclubbed-antennaeorange-abdominal-markingspider-wasp-mimicharmlessconspicuousbold-behaviormock-stinging-displayheart-rot-habitatOsmoderma-predatorflowering-plant-visitorlarge-flyglabrate-bodytemperate-forestmeadowgarden-visitordeciduous-woodlandScolia dubia haematodes
Blood-tailed Scoliid Wasp, Blue-winged Digger Wasp
Scolia dubia haematodes is a subspecies of digger wasp in the family Scoliidae. Adults are recognized by iridescent blue-black wings, black body, and reddish-brown terminal abdominal segments. Females hunt scarab beetle grubs in soil, paralyze them with a sting, and deposit eggs on the living hosts. The developing wasp larvae consume the grubs, making this taxon a significant biological control agent of turfgrass and garden pests.