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TaxonomyBrowse
Info
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Species Trogus pennator

Red flyer - Trogus pennator unkn  - Trogus pennator Ichneumon - Trogus pennator Ichneumon on Emerging from Black Swallowtail Pupa - Trogus pennator - male Id help needed - wasp. - Trogus pennator Trogus sp.? - Trogus pennator Observed in London, ON, Canada garden - Trogus pennator Ichneumon wasp - Trogus pennator
Classification
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 Ichneumonoidea (Braconids and Ichneumons)
Family Ichneumonidae (Ichneumon Wasps)
Subfamily Ichneumoninae
Tribe Heresiarchini
No Taxon (Callajoppa Genus Group)
No Taxon (Trogus Subgroup)
Genus Trogus
Species pennator (Trogus pennator)
Synonyms and other taxonomic changes
Trogus pennator (Fabricius, 1793)
Explanation of Names
From Latin penna a feather, or a wing (1).
Size
circa 19 mm length, 33 mm wingspan (guide photo measurements)
Life Cycle
Trogus pennator is a parasitoid of swallowtail butterflies (Papilionidae), ovipositing in the caterpillars.

The solitary larva develops inside the caterpillar, allowing it to pupate before killing it. After metamorphosing, the adult wasp chews an irregular hole in the chrysalis to escape.
Remarks
Perhaps a mimic of well-armed spider wasps, such as Tachypompilus ferrugineus:
  
Print References
Borror, entry for penna (1)
Eaton and Kaufman, pp. 328-329 (genus Trogus) (2)
Marshall, photo 545.9 (3)
Sime, Karen. The natural history of the parasitic wasp Trogus pennator (Hymenoptera: Ichneumonidae): Hostā€finding behaviour and a possible host countermeasure. Journal of Natural History, Volume 39, Number 17, 2005 , pp. 1367-1380(14) (abstract).
Internet References
Invasive.org--image of this species emerging from swallowtail pupa
Works Cited
1.Dictionary of Word Roots and Combining Forms
Donald J. Borror. 1960. Mayfield Publishing Company.
2.Kaufman Field Guide to Insects of North America
Eric Eaton, Kenn Kaufman. 2006. Houghton Mifflin.
3.Insects: Their Natural History And Diversity: With a Photographic Guide to Insects of Eastern North America
Stephen A. Marshall. 2006. Firefly Books Ltd.