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For Insects, Spiders & Their Kin
For the United States & Canada
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Family Scoliidae - Scoliid Wasps

Yellow-spotted black wasp with red abdomen - Scolia dubia scolia mexicana - Scolia mexicana - female Scoliid Wasp - Scolia dubia - female Bee like bug nectaring Bee Balm - Dielis plumipes - female Scoliid Wasp? - Colpa pollenifera - male Desert Wasp - Dielis tolteca - female Wasp sp? - Scolia dubia Xanthocampsomeris completa
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
Mammoth Wasps, Scarab Hawks, Scarab Hunters, Scarab Wasps
Explanation of Names
Scoliidae Latreille 1802
See Scolia
22 spp. (and 11 sspp.) in 7 genera* in our area;(1)(2)(3) 560 spp. in >140 genera total(4)
*Not counting Campsomeriella annulata and Micromeriella marginella modesta introduced to control the Japanese beetle (Popillia japonica), neither of which became established.
10‒50 mm, extralimital spp. up to ~75 mm
Mesosternum and metasternum divided by a transverse suture, metacoxae well-separated
Key to nearctic genera(5) (taxonomy obsolete)

Family Scoliidae
Subfamily Scoliinae
Tribe Scoliini - forewing with 1 recurrent vein
Genus Scolia - forewing with 2 submarginal cells

Genus Triscolia - forewing with 3 submarginal cells

Tribus incertae sedis - forewing with 2 recurrent veins and 3 submarginal cells
Genus Colpa (including Crioscolia)

Tribe Campsomerini - forewing with 2 recurrent veins and 2 submarginal cells

Genus Dielis - setae of female primarily pale

Genus Pygodasis - setae of female primarily black

Genus Xanthocampsomeris - setae of female reddish on apex of abdomen and often also on the head and thorax
worldwide; in NA, most diverse in the south
Larvae are parasitoids of ground-dwelling scarab grubs; adults take nectar
Life Cycle
Female digs down to the host grub, stings it, and lays an egg on the paralyzed grub(6)
See Also
Male Mutillidae (wings not wrinkled), Tiphiidae, Thynnidae
Print References
Works Cited
1.Catalog of Hymenoptera in America North of Mexico
Karl V. Krombein, Paul D. Hurd, Jr., David R. Smith, and B. D. Burks. 1979. Smithsonian Institution Press.
2.Checkliste der Dolchwespen der Welt (Insecta: Hymenoptera, Scoliidae)
von Till Osten. 2005. Bericht der Naturforschenden Gesellschaft Augsburg, 62: 1–62.
3.New Dielis species and structural dichotomy of the mitochondrial cox2 gene in Scoliidae wasps
Przemyslaw Szafranski . 2023. Scientific Reports, 13(1): 1-12 .
4.Order Hymenoptera. In: Zhang Z-Q (ed) Animal biodiversity: An outline of higher-level classif. and survey of taxonomic richness
Aguiar AP, Deans AR, Engel MS, Forshage M, Huber JT, Jennings JT, Johnson NF, Lelej AS, Longino JT, Lohrmann V, Mikó I, Ohl M. 2013. Zootaxa 3703: 51–62.
5.University of Florida: Featured Creatures
6.Borror and DeLong's Introduction to the Study of Insects
Norman F. Johnson, Charles A. Triplehorn. 2004. Brooks Cole.
7.The Scoliidae of California
Hurd P.D. 1952. Bull. Calif. Insect Survey 1(6): 141-152.
8.Scoliid Wasps of the Southwestern United States
MacKay W.P. 1987. Southwestern Naturalist 32(3): 357-362.
9.Scoliidae (Hymenoptera) of the Lower Río Grande Valley.
Porter, C.C. 1981. The Florida Entomologist 64(3): 441-453.