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Family Siricidae - Horntails

Wasp? No - Sawfly - Tremex columba family not known wasp maybe? - Urocerus flavicornis - female waspy type insect - Tremex columba Sirex Horntail - Sirex cyaneus - male Unknown black wasp - Urocerus cressoni Please Identify - Urocerus albicornis Hornet - Urocerus californicus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Symphyta" - Sawflies, Horntails, and Wood Wasps)
Family Siricidae (Horntails)
Explanation of Names
The common name of horntails refers to their abdominal spine
Numbers
2 subfamilies, with 28 spp. in 5 genera in our area and ~120 spp. in 10 genera worldwide(1)
Size
Size varies tremendously, adults of the same species may vary from 1 to 5 cm
Identification
Both sexes have a short abdominal dorsal projection (horn) that gives them their common name. Females also have an ovipositor in a sheath, placed ventrally in the abdomen.
Keys to genera and spp. in(1)
Range
forests of the Northern Hemisphere south to Cuba, n. Central America, India, New Guinea, and n. Africa (2 spp. are known from tropical Africa)(2)
Habitat
Forests
Food
Wood (Tremicinae mostly on hardwoods; Siricinae, on conifers); larvae require a symbiotic fungus to digest wood(2)
Life Cycle
larval development may take 1 to 3 years to complete depending on species and climate(2)
Remarks
Some are serious pests of trees and spread as larvae with lumber trade.
The most important predators and parasitoids are the ichneumonid wasp Megarhyssa and some nematodes
Horntails do not sting: what looks like a sting is the ovipositor the female uses to lay eggs in wood
Works Cited
1.Siricidae (Hymenoptera: Symphyta: Siricoidea) of the Western Hemisphere
Schiff, N.M., Goulet, H., Smith, D.R., Boudreault, C., Wilson, A.D., and Scheffler, B.E. 2012. Canadian Journal of Arthropod Identification No. 21: 305 pp.
2.Guide to the siricid woodwasps of North America
Schiff N.M., Valley S.A., LaBonte J.R., Smith D.R. 2006. USDA Forest Service, Forest Health Technology Enterprise Team, Morgantown, WV. 101 pp.