Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Genus Megarhyssa - Giant Ichneumons


Key to the species of Megarhyssa (Hymenoptera, Ichneumonidae, Rhyssinae) in America, north of Mexico
By Victoria Pook, Michael Sharkey, David Wahl
Deutsche Entomologische Zeitschrift 63(1): 137-148, 2016
Full text (PDF)

Ichneumon-Flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, and Acaenitinae
By Henry Townes and Marjorie Townes
Bulletin - United States National Museum, Vol. 216, Part 2, pp. 1–676, 1960

Key to Ichneumonidae in New Zealand
By Schnitzler, Franz-Rudolf & Ward, Darren F
Landcare Research, 2013
While the key was designed for New Zealand, Landcare Research's "Fact Sheets' on different taxa are an excellent source for Ichneumon wasp descriptions

Hibernating Ichneumonidae of Ohio
By Clement E. Dasch
Ohio J. Sci. 71: 270–283, 1971
Ecological info and identification key for 39 spp. (all but 2 Ichneumoninae) hibernating as adults (almost exclusively ♀♀).
Full text

Polydnaviruses of Parasitic Wasps: Domestication of Viruses To Act as Gene Delivery Vectors
By Burke, G.R. and M.R. Strand
Insects 2012. (3): 91-119. doi:10.3390/insects3010091, 2012
Comprehensive review of what is known about polydnaviruses.
Online, downloadable

Viral DNA delivers wasp's sting
By Kwok, Roberta
Nature international weekly journal of science, 2009
This online article summarizes what polydnaviruses are, evidence for their evolutionary origins, how their genome is embedded in some female wasps' reproductive tract, and whether or not they are truly viruses, or organelles.

When parasitic wasps hijacked viruses: genomic and functional evolution of polydnaviruses
By Herniou, E.A., E. Huguet, J. Theze, A. Bezier, G. Periquet, J.M. Drezen
Philosophical Transactions of the Royal Society B: Biological Sciences (Online ISSN: 1471-2970), 2013

The Braconid and Icheumonid Wasps: Biology, Systematics, Evolution, and Ecology
By Quicke Donald L.J.
Wiley-Blackwell, 2014
A comprehensive book on the state of the science of Ichneumonidae as of December 2014 by a top researcher in the field (and lab).