| Kingdom: Animalia |
| Phylum: Arthropoda |
| Subphylum: Hexapoda |
| Class: Insecta |
| Infraclass: Neoptera |
| Subclass: Pterygota |
| Order: Hymenoptera |
| Suborder: Apocrita |
| Superfamily: Apoidea |
| Family: Crabronidae |
| Subfamily: Pemphredoninae |
| Tribe: Pemphredonini |
| Genus: Pemphredon |
| Subject: Pemphredon spp. Latreille, 1796 |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Order: Scrophulariales |
| Family: Oleaceae |
| Genus: Fraxinus |
| Subject: Fraxinus pennsylvanica Marsh. |