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Genus Trioxys

Braconid - Trioxys Braconid - Trioxys Block Island Trioxys - Trioxys - female Block Island Trioxys fore wing - Trioxys - female Block Island Trioxys fore wing - Trioxys - female Aphidiinae? - Trioxys - female Aphidiinae? - Trioxys - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Parasitica" (parasitoid Apocrita))
Superfamily Ichneumonoidea (Braconid and Ichneumonid Wasps)
Family Braconidae (Braconid Wasps)
Subfamily Aphidiinae
Genus Trioxys
Explanation of Names
Trioxys Haliday 1833
Numbers
About 13 described species in New World.(1) as of 1997

22 North American species; 15 native, 7 introduced as of 2007
Size
About 2 mm
Identification
lack of spiny bristles on the 5th, 6th, and 7th female tergites
Range
Alaska and Canada to Mexico.(1)
Habitat
arboricolous, grassy riparian, sagebrush, and select agroecosystem habitats
Food
Reared from Aphididae, Thelaxidae, and Drepanosiphidae.(1)
Life Cycle
Remarks
The only other Nearctic aphidiine genus in which females have prongs on the hypopygium is Acanthocaudus Smith. This genus can be distinguished from Acanthocaudus by the lack of spiny bristles on the 5th, 6th, and 7th female tergites, which are present in Acanthocaudus.
Print References
Fulbright, J. L., Pike, K. S., & Stary, P. (2007). A key to North American species of Trioxys Haliday (Hymenoptera: Braconidae: Aphidiinae), with a summary of the geographic distribution, hosts, and species diagnostic features. PROCEEDINGS-ENTOMOLOGICAL SOCIETY OF WASHINGTON, 109(4), 779.
Works Cited
1.Manual of the New World Genera of the Family Braconidae (Hymenoptera)
Wharton, R.A., P.M. Marsh, M.J. Sharkey (Eds). 1997. International Society of Hymenopterists.