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Species Scolia dubia

Family Scoliidae - Scoliid Wasps, ID please - Scolia dubia - female Pollinating Wasp - Scolia dubia wasp on goldenrod - Scolia dubia Wasp - Scolia dubia Digger Wasp - Scolia dubia Ground wasp?  - Scolia dubia Scolia dubia dubia - Scolia dubia - male Blue-winged Wasp - Scolia dubia - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
Superfamily Scolioidea
Family Scoliidae (Scoliid Wasps)
Tribe Scoliini
Genus Scolia
Species dubia (Scolia dubia)
Other Common Names
Blue-winged Wasp (note: this applies to many unrelated species as well), Blue-winged Scoliid Wasp, Blue-winged Digger Wasp
Explanation of Names
Scolia dubia Say 1837
dubia = 'doubtful'
20-25 mm
Black with reddish orange abdomen. The nominate subspecies has two large yellow spots while the subspecies haematodes lacks these spots. Males have longer antennae than females, and a pronglike pseudostinger.

The larva is a hairless, legless white grub with a brown head, no eyes, one-segmented antennae, maxillary and labial palpi, and a slit-like silk gland on the labium.
much of the US except the northwest (map) - Discoverlife
Range from the St. Laurence River down to Florida, and west to Arizona
mostly Aug-Oct (BG data)
Adults take nectar, may also feed on juices from beetle prey. Larvae are parasites of scarab beetles, mainly June beetles and also the introduced Japanese beetle.
Life Cycle
Males and females have a courtship dance, flying close to the ground in a figure-8 or S pattern. Females burrow into ground in search of grubs, especially those of Cotinis and Popillia japonica. She stings it and often burrows farther down, then constructs a cell and lays an egg on the host. Larva pupates and overwinters in a cocoon within the body of the host. One generation per year in North, more in South.
Males have a 3-pronged "pseudostinger," a part of copulatory gear
Internet References
Scolia dubia - NCSU