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Family Scoliidae - Scoliid Wasps

Campsomeris species - Campsomeris trifasciata Scolia dubia - male Trielis octomaculata?  - Crioscolia alcione - male wasp on flower - Campsomeris plumipes - male Scolia dubia? - Scolia dubia Wasp foraging on mint flowers - Scolia nobilitata ID Request - Scolia bicincta Double-banded Scoliid - Scolia bicincta - female
Classification
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)
Other Common Names
Flower Wasps, Mammoth Wasps, Scarab Hawks, Scarab Hunters
Pronunciation
sco-LEE-ih-dee
Explanation of Names
See Scolia
Numbers
~20 spp. in 5 genera in our area(1)[Cite:185010] (Campsomeriella annulata and Micromeriella marginella modesta were introduced to control the Japanese beetle but did not become established)
Size
20-50 mm
Identification
Robust, hairy, medium-sized to large
Wings with longitudinal wrinkles towards the apex
Mesosternum and metasternum divided by a transverse suture
Hind coxae well-separated

Another way to the tell gender, with most of the Scoliid Wasps is the flagellum length vs. head width ratio.
Greater than 3 = ♂
Less than 3 = ♀
Bob Biagi
Range
in NA, most diverse in the south
Habitat
Fields, meadows, lawns (searching for hosts).
Season
Summer
Food
Larvae are parasitoids of ground-dwelling scarab grubs, esp. Phyllophaga; adults take nectar
Life Cycle
Female digs down to the host grub, stings it, and lays an egg on the paralyzed grub(2)
See Also
Male Mutillidae (wings not wrinkled)
Print References
(3)(4)
Works Cited
1.American Insects: A Handbook of the Insects of America North of Mexico
Ross H. Arnett. 2000. CRC Press.
2.Borror and DeLong's Introduction to the Study of Insects
Norman F. Johnson, Charles A. Triplehorn. 2004. Brooks Cole.
3.The Scoliidae of California
Hurd P.D. 1952. Bull. Calif. Insect Survey 1(6): 141-152.
4.Scoliid Wasps of the Southwestern United States
MacKay W.P. 1987. Southwestern Naturalist 32(3): 357-362.