| Kingdom: Animalia |
| Phylum: Arthropoda |
| Subphylum: Hexapoda |
| Class: Insecta |
| Infraclass: Neoptera |
| Subclass: Pterygota |
| Order: Hymenoptera |
| Suborder: Apocrita |
| Superfamily: Ichneumonoidea |
| Family: Ichneumonidae |
| Subfamily: Rhyssinae |
| Genus: Megarhyssa |
| Subject: Megarhyssa spp. (Ashmead, 1900) |