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For Insects, Spiders & Their Kin
For the United States & Canada
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Family Aulacidae

small red wasp with black wings and very long ovipositor - Pristaulacus - female small black and red wasp - Pristaulacus - female Small ichneumon? - Pristaulacus Long ovipositor - Pristaulacus - female Wasp - Pristaulacus montanus - female Ichneumon? - Pristaulacus rufitarsis - female Parasitic wasp - Pristaulacus fasciatus - female Wasp - Pristaulacus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Parasitica" (parasitic Apocrita))
Superfamily Evanioidea (Aulacids, Ensigns, and Gasteruptiids)
Family Aulacidae
~30 spp. in 2 genera in our area(1), ~170 described spp. in 3 genera worldwide + about as many undescribed(2)
Resemble Gasteruptiidae, but our spp. are usually black with reddish abdomen, longer antennae, and two recurring veins in the front wing
most of the world, more diverse in the tropics(2)
Adults usually found around logs where hosts occur
endoparasitoids of the wood-boring larvae of beetles (of several families, but mostly longhorns) and Xiphydria wood wasps(2)
Frequently mistaken for ichneumon wasps as they often frequent dead standing trees, logs, woodpiles. Note "neck" between head and thorax and the high attachment point of the metasoma
Works Cited
1.World catalog of the family Aulacidae (Hymenoptera)
Smith D.R. 2001. Contributions on Entomology, International 4: 263-319.
2.Aulacidae, by J.T. Jennings & A.R. Deans (in The Tree of Life Web Project)