| Insect Species | |
| Scientific Name & Common Name (if any) | Insect Family |
| Agrilus horni* (Aspen Root Girdler) | Buprestidae (Metallic Wood-Boring Beetles) |
| Agrilus liragus* (Bronze Poplar Borer) | Buprestidae (Metallic Wood-Boring Beetles) |
| Chrysobothris femorata* (Flat-Headed Appletree Borer) | Buprestidae (Metallic Wood-Boring Beetles) |
| Descarpentriesina cyanipes* (syn. Poecilonota cyanipes) (Eastern Poplar Buprestid) | Buprestidae (Metallic Wood-Boring Beetles) |
| Dicerca divaricata* | Buprestidae (Metallic Wood-Boring Beetles) |
| Dicerca tenebrica* (Flat-Headed Poplar Borer) | Buprestidae (Metallic Wood-Boring Beetles) |
| Anoplophora glabripennis* (Asian Long-Horned Beetle) | Cerambycidae (Long-Horned Beetles) |
| Grammoptera exigua* | Cerambycidae (Long-Horned Beetles) |
| Grammoptera subargentata* | Cerambycidae (Long-Horned Beetles) |
| Judolia montivagens montivagens* | Cerambycidae (Long-Horned Beetles) |
| Oberea delongi* (Poplar Twig Borer) | Cerambycidae (Long-Horned Beetles) |
| Oberea schaumii* (Poplar Branch Borer) | Cerambycidae (Long-Horned Beetles) |
| Plectrodera scalator* (Cottonwood Borer) | Cerambycidae (Long-Horned Beetles) |
| Saperda calcarata* (Poplar Borer) | Cerambycidae (Long-Horned Beetles) |
| Saperda inornata* (Poplar-Gall Saperda) | Cerambycidae (Long-Horned Beetles) |
| Xylotrechus annosus annosus* | Cerambycidae (Long-Horned Beetles) |
| Chrysomela scripta (Cottonwood Leaf Beetle) | Chrysomelidae (Leaf Beetles) |
| Cryptorhynchus lapathi* (Poplar & Willow Borer) | Curculionidae (Weevils) |
| Polydrusus impressifrons (Pale Green Weevil) | Curculionidae (Weevils) |
| Aphis maculata (Spotted Poplar Aphid) | Aphididae (Aphids) |
| Chaitophorus populicola (Poplar Leaf Aphid) | Aphididae (Aphids) |
| Chaitophorus stevensis | Aphididae (Aphids) |
| Pachypappa pseudobyrsa | Aphididae (Aphids) |
| Pemphigus bursarius (Lettuce Root Aphid) | Aphididae (Aphids) |
| Pemphigus populiglobuli** | Aphididae (Aphids) |
| Pemphigus populi-transversus | Aphididae (Aphids) |
| Pterocomma smithiae (Black Willow Aphid) | Aphididae (Aphids) |
| Thecabius populiconduplifolius (Folded-Leaf Poplar Aphid) | Aphididae (Aphids) |
| Lepyronia gibbosa | Cercopidae (Spittlebugs) |
| Idiocerus lunaris | Cicadellidae (Leafhoppers) |
| Kybos copula | Cicadellidae (Leafhoppers) |
| Palonica tremulata | Membracidae (Treehoppers) |
| Orthotylus candidatus | Miridae (Plant Bugs) |
| Tropidosteptes populi | Miridae (Plant Bugs) |
| Brochymena quadripustulata (Four-Humped Stink Bug) | Pentatomidae (Stink Bugs) |
| Trichosoma triangulum | Cimbicidae (Cimbicid Sawflies) |
| Messa populifoliella § | Tenthredinidae (Sawflies) |