Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Species Scolia dubia - Blue-winged Wasp

Orange and Black Wasp - Scolia dubia - female Digger wasp / Scolia dubia - Scolia dubia Large wasp - Scolia dubia Spotted Wasp? - Scolia dubia Triscolia? - Scolia dubia Wasp on wild flowers in grasses - Scolia dubia small wasp with two yellow dots on an orange abdomen - Scolia dubia Bee - Scolia dubia
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)
Subfamily Scoliinae
Genus Scolia
Species dubia (Blue-winged Wasp)
Other Common Names
Digger Wasp
Explanation of Names
Scolia dubia Say 1837
dubia = 'doubtful'
20-25 mm
Black with reddish orange abdomen, two large yellow spots. 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. Males have longer antennae than females, and a pronglike pseudostinger.
much of the US except the northwest (map) - Discoverlife
mostly Aug-Oct (BG data)
Adults take nectar, may also feed on juices from beetle prey. Larvae are parasites of scarab beetles, mainly Jne 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
Fact sheet - NCSU