Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Discussion of 2018 gathering

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Species Megarhyssa macrurus

Megarhyssa ichneumon wasps at Duman's Dam Park Nicktown PA Aug 2008 - Megarhyssa macrurus - female Megarhyssa macrurus? - Megarhyssa macrurus - female Unknown1 - Megarhyssa macrurus Ichneumonid? - Megarhyssa macrurus - female Ichneumon- Megarhyssa - Megarhyssa macrurus - female Megarhyssa macrurus - female Ichneumon wasps? - Megarhyssa macrurus Giant Ichneumon - Megarhyssa macrurus - female
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 Rhyssinae
Genus Megarhyssa (Giant Ichneumons)
Species macrurus (Megarhyssa macrurus)
Synonyms and other taxonomic changes
First described in 1771 by Carolus Linnaeus as Ichneumon macrurus
Explanation of Names
macrurus is from Greek makros (μακρος)- "long" + oura (ουρα)- tail
It parasitizes Pigeon tremex, Tremex columba
Townes, who was knowledgeable of Latin and Greek, interpreted the name macrurus as a noun, which is implied by his his use of the new combination Megarhyssa macrurus in his 1944/45 catalog as well as in his 1960 treatment of the North American species of Megarhyssa. This is consistent with the above explanation of the name. Unfortunately, some recent papers have unjustifiably begun citing the combination as Megarhyssa macrura, apparently following the unjustified use of that combination in the Taxapad database. I (RWC) see no reasonable argument for treating the name as anything other than a noun, but even if it could be argued that Linnaeus might have intended the name as adjectival (which I doubt), it seems to me that Townes treatment of the name as a noun has first revisor status.