| Insect Species | |
| Scientific Name & Common Name (if any) | Insect Family |
| Polydrussus impressifrons (Pale Green Weevil) | Curculionidae (Weevils) |
| Rhynchaeus rufipes (Willow Flea Weevil) § | Curculionidae (Weevils) |
| Orsodacne atra (Silver-Backed Beetle) | Orsodacnidae (Ravenous Leaf Beetles) |
| Aphis farinosa | Aphididae (Aphids) |
| Aphis salicariae (Willow Aphid) | Aphididae (Aphids) |
| Cavariella aegopodii (Carrot-Willow Aphid) | Aphididae (Aphids) |
| Chaitophorus viminalis (Small Black & Green Willow Aphid) | Aphididae (Aphids) |
| Fullawaya flocculosa | Aphididae (Aphids) |
| Fullawaya terricola | Aphididae (Aphids) |
| Macrosiphum californica | Aphididae (Aphids) |
| Pterocomma populifoliae | Aphididae (Aphids) |
| Pterocomma smithiae (Black Willow Aphid) | Aphididae (Aphids) |
| Tuberolachnus salignus (Giant Willow Aphid) | Aphididae (Aphids) |
| Davisonia americana | Cicadellidae (Leafhoppers) |
| Davisonia major | Cicadellidae (Leafhoppers) |
| Empoasca andresia | Cicadellidae (Leafhoppers) |
| Empoasca fabae | Cicadellidae (Leafhoppers) |
| Eratoneura macra | Cicadellidae (Leafhoppers) |
| Erythridula rufostigmosa | Cicadellidae (Leafhoppers) |
| Erythroneura rosa | Cicadellidae (Leafhoppers) |
| Graphocephala hieroglyphica | Cicadellidae (Leafhoppers) |
| Idiocerus alternatus | Cicadellidae (Leafhoppers) |
| Idiocerus nervatus | Cicadellidae (Leafhoppers) |
| Idiocerus pallidus | Cicadellidae (Leafhoppers) |
| Idiocerus ramentosus | Cicadellidae (Leafhoppers) |
| Kybos albolinea | Cicadellidae (Leafhoppers) |
| Kybos patula | Cicadellidae (Leafhoppers) |
| Macropsis erythrocephala | Cicadellidae (Leafhoppers) |
| Macropsis viridis | Cicadellidae (Leafhoppers) |
| Atractotomus rubidus | Miridae (Plant Bugs) |
| Ceratocapsus incisus | Miridae (Plant Bugs) |
| Lopidea salicis (Willow Plant Bug) | Miridae (Plant Bugs) |
| Lygocoris atritylus | Miridae (Plant Bugs) |
| Monosynamma bohemanni | Miridae (Plant Bugs) |
| Orthotylus dorsalis | Miridae (Plant Bugs) |
| Orthotylus rossi | Miridae (Plant Bugs) |
| Pilophorus brunneus | Miridae (Plant Bugs) |
| Brochymena quadripustulata (Four-Humped Stink Bug) | Pentatomidae (Stink Bugs) |
| Chlorochroa uhleri | Pentatomidae (Stink Bugs) |
| Parabrochymena arborea | Pentatomidae (Stink Bugs) |
| Corythucha mollicula | Tingidae (Lace Bugs) |
| Physatocheila plexus | Tingidae (Lace Bugs) |
| Cimbex americana (Elm Sawfly) | Cimbicidae (Cimbicid Sawflies) |
| Trichiosoma viminalis | Cimbicidae (Cimbicid Sawflies) |
| Euura spp.* | Tenthredinidae (Common Sawflies) |
| Nematus calais | Tenthredinidae (Common Sawflies) |
| Nematus ventralis (Willow Sawfly) | Tenthredinidae (Common Sawflies) |
| Pontania proxima (Willow Red-Gall Sawfly) | Tenthredinidae (Common Sawflies) |
| Pontania s-pomum (Willow Gall Sawfly) | Tenthredinidae (Common Sawflies) |
| Aspondylia salictaria* | Cecidomyiidae (Gall Flies) |
| Dasineura salicifolia** | Cecidomyiidae (Gall Flies) |
| Rhabdophaga strobiloides* (Willow Conegall Midge) | Cecidomyiidae (Gall Flies) |
| Mycterothrips betulae | Thripidae (Thrips) |
| Pseudothrips inequalis | Thripidae (Thrips) |
| Microcentrum retinervis (Angular-Winged Katydid) | Tettigoniidae (Katydids) |