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Genus Sirex

Sirex Horntail - Sirex - male Sirex Horntail - Sirex - male What is this? - Sirex nigricornis - female Sirex cyaneus? - Sirex - female Some kind of Hymenoptera - Sirex areolatus Sirex nigricornis? - Sirex areolatus unknown wasp - Sirex - male Sirex areolatus (Cresson 1868)?  - Sirex areolatus - male
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)
Subfamily Siricinae
Genus Sirex
Synonyms and other taxonomic changes
S. californicus (Ashmead) is now treated as separate sp., not a ssp. of S. juvencus, which is a strictly Palaearctic species, frequently intercepted but not established in NA(1)
multiple new junior synonyms of S. nigricornis recently established in(1)
Explanation of Names
Sirex Linnaeus 1761
13 spp. in our area (of which one adventive), 28 spp. total(1)
Holarctic; in our area, mostly western(1)
associated with conifers, mostly Pinaceae(2)
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.