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Species Megarhyssa macrurus

Giant Orange & Brown Ichneumon - Megarhyssa macrurus - female Megarhyssa macrurus - female Large Ichneumon  - Megarhyssa macrurus - female Ichneumon wasps? - Megarhyssa macrurus Unusual Ohio wasp - Megarhyssa macrurus - female Unknown Bug - Ontario, Canada - Megarhyssa macrurus - female Ichneumon macrurus Linnaeus - Megarhyssa macrurus - female Megarhyssa macrurus? - Megarhyssa macrurus - male
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)
Explanation of Names
Ichneumon macrurus Linnaeus 1771
macrurus (G). makros (μακρος)- "long" + oura (ουρα)- "tail"
4 spp. n. of Mex.(1)

Det. M. A. Quinn, 2018
e NA to Rocky Mtns. / n. Mex. (BG data)
Life Cycle
parasitizes Pigeon tremex (Tremex columba, Siricidae)
- Range: e. NA to Calif.
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.
See Also
Megarhyssa greenei - Range: e. NA to Great Plains
Internet References