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| Common Name | Scientific Name | Order | Family | Genus | Species | Author | notes |
|---|---|---|---|---|---|---|---|
| Florida red scale | Chrysomphalus aonidum (Linnaeus) | HEMIPTERA | Diaspididae | Chrysomphalus | aonidum | (Linnaeus) | |
| Florida wax scale | Ceroplastes floridensis Comstock | HEMIPTERA | Coccidae | Ceroplastes | floridensis | Comstock | |
| flower thrips | Frankliniella tritici (Fitch) | THYSANOPTERA | Thripidae | Frankliniella | tritici | (Fitch) | |
| fluff louse | Goniocotes gallinae (De Geer) | PHTHIRAPTERA | Philopteridae | Goniocotes | gallinae | (De Geer) | |
| follicle mite | Demodex folliculorum (Simon) | ACARI | Demodicidae | Demodex | folliculorum | (Simon) | |
| forage looper | Caenurgina erechtea (Cramer) | LEPIDOPTERA | Noctuidae | Caenurgina | erechtea | (Cramer) | |
| Forbes scale | Quadraspidiotus forbesi (Johnson) | HEMIPTERA | Diaspididae | Quadraspidiotus | forbesi | (Johnson) | |
| foreign grain beetle | Ahasverus advena (Waltl) | COLEOPTERA | Silvanidae | Ahasverus | advena | (Waltl) | |
| forest bumble bee | Bombus sylvicola Kirby | HYMENOPTERA | Apidae | Bombus | sylvicola | Kirby | |
| forest tent caterpillar | Malacosoma disstria Hübner | LEPIDOPTERA | Lasiocampidae | Malacosoma | disstria | Hübner | |
| forest tree termite | Neotermes connexus Snyder | ISOPTERA | Kalotermitidae | Neotermes | connexus | Snyder | |
| forktailed bush katydid | Scudderia furcata Brunner von Wattenwyl | ORTHOPTERA | Tettigoniidae | Scudderia | furcata | Brunner von Wattenwyl | |
| Formosan subterranean termite | Coptotermes formosanus Shiraki | ISOPTERA | Rhinotermitidae | Coptotermes | formosanus | Shiraki | |
| fourbanded leafroller | Argyrotaenia quadrifasciana (Fernald) | LEPIDOPTERA | Tortricidae | Argyrotaenia | quadrifasciana | (Fernald) | |
| foureyed spruce bark beetle | Polygraphus rufipennis (Kirby) | COLEOPTERA | Curculionidae | Polygraphus | rufipennis | (Kirby) | |
| fourlined plant bug | Poecilocapsus lineatus (Fabricius) | HEMIPTERA | Miridae | Poecilocapsus | lineatus | (Fabricius) | |
| fourspotted spider mite | Tetranychus canadensis (McGregor) | ACARI | Tetranychidae | Tetranychus | canadensis | (McGregor) | |
| fourspotted tree cricket | Oecanthus quadripunctatus Beutenm | ORTHOPTERA | Oecanthidae | Oecanthus | quadripunctatus | Beutenm | |
| fowl tick | Argas persicus (Oken) | ACARI | Argasidae | Argas | persicus | (Oken) | |
| foxglove aphid | Aulacorthum solani (Kaltenbach) | HEMIPTERA | Aphididae | Aulacorthum | solani | (Kaltenbach) | |
| Franklin bumble bee | Bombus franklini Frison | HYMENOPTERA | Apidae | Bombus | franklini | Frison | |
| Franklin bumble bee | Bombus franklini Frison | HYMENOPTERA | Apidae | Bombus | franklini | Frison | |
| frigate bird fly | Olfersia spinifera (Leach) | DIPTERA | Hippoboscidae | Olfersia | spinifera | (Leach) | |
| fringed orchid aphid | Cerataphis orchidearum (Westwood) | HEMIPTERA | Aphididae | Cerataphis | orchidearum | (Westwood) | |
| frit fly | Oscinella frit (Linnaeus) | DIPTERA | Chloropidae | Oscinella | frit | (Linnaeus) | |
| fruittree leafroller | Archips argyrospila (Walker) | LEPIDOPTERA | Tortricidae | Archips | argyrospila | (Walker) | |
| Fuller rose beetle | Naupactus cervinus Boheman | COLEOPTERA | Curculionidae | Naupactus | cervinus | Boheman | |
| furniture beetle | Anobium punctatum (De Geer) | COLEOPTERA | Anobiidae | Anobium | punctatum | (De Geer) | |
| furniture carpet beetle | Anthrenus flavipes LeConte | COLEOPTERA | Dermestidae | Anthrenus | flavipes | LeConte | |
| fuzzy-horned bumble bee | Bombus mixtus Cresson | HYMENOPTERA | Apidae | Bombus | mixtus | Cresson | |
| gallmaking maple borer | Xylotrechus aceris Fisher | COLEOPTERA | Cerambycidae | Xylotrechus | aceris | Fisher | |
| garden fleahopper | Halticus bractatus (Say) | HEMIPTERA | Miridae | Halticus | bractatus | (Say) | |
| garden millipede | Oxidus gracilis Koch | POLYDESMIDA | Paradoxoxomatidae | Oxidus | gracilis | Koch | |
| garden springtail | Bourletiella hortensis (Fitch) | COLLEMBOLA | Bourletiellidae | Bourletiella | hortensis | (Fitch) | |
| garden symphylan | Scutigerella immaculata (Newport) | SYMPHYLA | Scutigerellidae | Scutigerella | immaculata | (Newport) | |
| garden webworm | Achyra rantalis (Guenée) | LEPIDOPTERA | Crambidae | Achyra | rantalis | (Guenée) | |
| gardenia bud mite | Colomerus gardeniella (Keifer) | ACARI | Eriophyidae | Colomerus | gardeniella | (Keifer) | |
| genista caterpillar | Uresiphita reversalis (Guenée) | LEPIDOPTERA | Crambidae | Uresiphita | reversalis | (Guenée) | |
| German cockroach | Blattella germanica (Linnaeus) | BLATTODEA | Blattellidae | Blattella | germanica | (Linnaeus) | |
| German yellowjacket | Vespula germanica (Fabricius) | HYMENOPTERA | Vespidae | Vespula | germanica | (Fabricius) | |
| giant African snail | Achatina fulica Bowdich | STYLOMMATOPHORA | Achatinidae | Achatina | fulica | Bowdich | |
| giant bark aphid | Longistigma caryae (Harris) | HEMIPTERA | Aphididae | Longistigma | caryae | (Harris) | |
| giant Hawaiian dragonfly | Anax strenuus Hagen | ODONATA | Aeshnidae | Anax | strenuus | Hagen | |
| giant palm borer | Dinapate wrightii Horn | COLEOPTERA | Bostrichidae | Dinapate | wrightii | Horn | |
| giant stag beetle | Lucanus elaphus Fabricius | COLEOPTERA | Lucanidae | Lucanus | elaphus | Fabricius | |
| giant water bug | Lethocerus americanus (Leidy) | HEMIPTERA | Belostomatidae | Lethocerus | americanus | (Leidy) | |
| Giffard whitefly | Bemisia giffardi (Kotinsky) | HEMIPTERA | Aleyrodidae | Bemisia | giffardi | (Kotinsky) | |
| ginger maggot | Eumerus figurans Walker | DIPTERA | Syrphidae | Eumerus | figurans | Walker | |
| gladiolus thrips | Thrips simplex (Morison) | THYSANOPTERA | Thripidae | Thrips | simplex | (Morison) | |
| glassy cutworm | Apamea devastator (Brace) | LEPIDOPTERA | Noctuidae | Apamea | devastator | (Brace) | |
| glassy-winged sharpshooter | Homalodisca vitripennis (Germar) | HEMIPTERA | Cicadellidae | Homalodisca | vitripennis | (Germar) | |
| globose scale | Sphaerolecanium prunastri (Boyer de Fonscolombe) | HEMIPTERA | Coccidae | Sphaerolecanium | prunastri | (Boyer de Fonscolombe) | |
| globular spider beetle | Trigonogenius globulum Solier | COLEOPTERA | Ptinidae | Trigonogenius | globulum | Solier | |
| gloomy scale | Melanaspis tenebricosa (Comstock) | HEMIPTERA | Diaspididae | Melanaspis | tenebricosa | (Comstock) | |
| Glover scale | Lepidosaphes gloverii (Packard) | HEMIPTERA | Diaspididae | Lepidosaphes | gloverii | (Packard) | |
| goat biting louse | Bovicola caprae (Gurlt) | PHTHIRAPTERA | Trichodectidae | Bovicola | caprae | (Gurlt) | |
| goat follicle mite | Demodex caprae Railliet | ACARI | Demodicidae | Demodex | caprae | Railliet | |
| goat sucking louse | Linognathus stenopsis (Burmeister) | PHTHIRAPTERA | Linognathidae | Linognathus | stenopsis | (Burmeister) | |
| golden buprestid | Buprestis aurulenta Linnaeus | COLEOPTERA | Buprestidae | Buprestis | aurulenta | Linnaeus | |
| golden cricket wasp | Liris aurulentus (Fabricius) | HYMENOPTERA | Sphecidae | Liris | aurulentus | (Fabricius) | |
| golden oak scale | Asterolecanium variolosum (Ratzeburg) | HEMIPTERA | Asterolecaniidae | Asterolecanium | variolosum | (Ratzeburg) | |
| golden paper wasp | Polistes aurifer Saussure | HYMENOPTERA | Vespidae | Polistes | aurifer | Saussure | |
| golden spider beetle | Niptus hololeucus (Faldermann) | COLEOPTERA | Ptinidae | Niptus | hololeucus | (Faldermann) | |
| golden tortoise beetle | Charidotella sexpunctata bicolor (Fabricius) | COLEOPTERA | Chrysomelidae | Charidotella | sexpunctata bicolor | (Fabricius) | |
| goldeneyed lacewing | Chrysopa oculata Say | NEUROPTERA | Chrysopidae | Chrysopa | oculata | Say | |
| goldenglow aphid | Uroleucon rudbeckiae (Fitch) | HEMIPTERA | Aphididae | Uroleucon | rudbeckiae | (Fitch) | |
| goldenheaded weevil | Compasus auricephalus (Say) | COLEOPTERA | Curculionidae | Compasus | auricephalus | (Say) | |
| goldspotted oak borer | Agrilus coxalis Waterhouse | COLEOPTERA | Buprestidae | Agrilus | coxalis | Waterhouse | |
| goose body louse | Trinoton anserinum (Fabricius) | PHTHIRAPTERA | Menoponidae | Trinoton | anserinum | (Fabricius) | |
| gooseberry fruitworm | Zophodia grossulariella (Hübner) | LEPIDOPTERA | Pyralidae | Zophodia | grossulariella | (Hübner) | |
| gooseberry witchbroom aphid | Kakimia houghtonensis (Troop) | HEMIPTERA | Aphididae | Kakimia | houghtonensis | (Troop) | |
| gophertortoise tick | Amblyomma tuberculatum Marx | ACARI | Ixodidae | Amblyomma | tuberculatum | Marx | |
| gorse seed weevil | Apion ulicis (Förster) | COLEOPTERA | Brentidae | Exapion | ulicis | (Förster) | |
| grain mite | Acarus siro Linnaeus | ACARI | Acaridae | Acarus | siro | Linnaeus | |
| grain rust mite | Abacarus hystrix (Nalepa) | ACARI | Eriophyidae | Abacarus | hystrix | (Nalepa) | |
| grain thrips | Limothrips cerealium (Haliday) | THYSANOPTERA | Thripidae | Limothrips | cerealium | (Haliday) | |
| granary weevil | Sitophilus granarius (Linnaeus) | COLEOPTERA | Curculionidae | Sitophilus | granarius | (Linnaeus) | |
| granulate ambrosia beetle | Xylosandrus crassiusculus (Motschulsky) | COLEOPTERA | Curculionidae | Xylosandrus | crassiusculus | (Motschulsky) | |
| granulate cutworm | Feltia subterranea (Fabricius) | LEPIDOPTERA | Noctuidae | Feltia | subterranea | (Fabricius) | |
| grape berry moth | Paralobesia viteana (Clemens) | LEPIDOPTERA | Tortricidae | Paralobesia | viteana | (Clemens) | |
| grape blossom midge | Contarinia johnsoni Felt | DIPTERA | Cecidomyiidae | Contarinia | johnsoni | Felt | |
| grape cane gallmaker | Ampeloglypter sesostris (LeConte) | COLEOPTERA | Curculionidae | Ampeloglypter | sesostris | (LeConte) | |
| grape colaspis | Colaspis brunnea (Fabricius) | COLEOPTERA | Chrysomelidae | Colaspis | brunnea | (Fabricius) | |
| grape curculio | Craponius inaequalis (Say) | COLEOPTERA | Curculionidae | Craponius | inaequalis | (Say) | |
| grape erineum mite | Colomerus vitis (Pagenstecher) | ACARI | Eriophyidae | Colomerus | vitis | (Pagenstecher) | |
| grape flea beetle | Altica chalybea Illiger | COLEOPTERA | Chrysomelidae | Altica | chalybea | Illiger | |
| grape leaffolder | Desmia funeralis (Hübner) | LEPIDOPTERA | Crambidae | Desmia | funeralis | (Hübner) | |
| grape mealybug | Pseudococcus maritimus (Ehrhorn) | HEMIPTERA | Pseudococcidae | Pseudococcus | maritimus | (Ehrhorn) | |
| grape phylloxera | Daktulosphaira vitifoliae (Fitch) | HEMIPTERA | Phylloxeridae | Daktulosphaira | vitifoliae | (Fitch) | |
| grape plume moth | Pterophorus periscelidactylus Fitch | LEPIDOPTERA | Pterophoridae | Pterophorus | periscelidactylus | Fitch | |
| grape root borer | Vitacea polistiformis (Harris) | LEPIDOPTERA | Sesiidae | Vitacea | polistiformis | (Harris) | |
| grape rootworm | Fidia viticida Walsh | COLEOPTERA | Chrysomelidae | Fidia | viticida | Walsh | |
| grape sawfly | Erythraspides vitis (Harris) | HYMENOPTERA | Tenthredinidae | Erythraspides | vitis | (Harris) | |
| grape scale | Diaspidiotus uvae (Comstock) | HEMIPTERA | Diaspididae | Diaspidiotus | uvae | (Comstock) | |
| grape seed chalcid | Evoxysoma vitis (Saunders) | HYMENOPTERA | Eurytomidae | Evoxysoma | vitis | (Saunders) | |
| grape thrips | Drepanothrips reuteri Uzel | THYSANOPTERA | Thripidae | Drepanothrips | reuteri | Uzel | |
| grape trunk borer | Clytoleptus albofasciatus (Laporte & Gory) | COLEOPTERA | Cerambycidae | Clytoleptus | albofasciatus | (Laporte & Gory) | |
| grape whitefly | Trialeurodes vittata (Quaintance) | HEMIPTERA | Aleyrodidae | Trialeurodes | vittata | (Quaintance) | |
| grapeleaf skeletonizer | Harrisina americana (Guerin) | LEPIDOPTERA | Zygaenidae | Harrisina | americana | (Guérin) | |
| grapevine aphid | Aphis illinoisensis Shimer | HEMIPTERA | Aphididae | Aphis | illinoisensis | Shimer | |
| grapevine looper | Eulithis diversilineata (Hübner) | LEPIDOPTERA | Geometridae | Eulithis | diversilineata | (Hübner) | |
| grass fleahopper | Halticus chrysolepis Kirkaldy | HEMIPTERA | Miridae | Halticus | chrysolepis | Kirkaldy | |
| grass mite | Siteroptes graminum (Reuter) | ACARI | Siteroptidae | Siteroptes | graminum | (Reuter) | |
| grass sawfly | Pachynematus extensicornis (Norton) | HYMENOPTERA | Tenthredinidae | Pachynematus | extensicornis | (Norton) | |
| grass scolytid | Hypothenemus pubescens Hopkins | COLEOPTERA | Curculionidae | Hypothenemus | pubescens | Hopkins | |
| grass sharpshooter | Draeculacephala minerva Ball | HEMIPTERA | Cicadellidae | Draeculacephala | minerva | Ball | |
| grass sheathminer | Cerodontha dorsalis (Loew) | DIPTERA | Agromyzidae | Cerodontha | dorsalis | (Loew) | |
| grass thrips | Anaphothrips obscurus (Müller) | THYSANOPTERA | Thripidae | Anaphothrips | obscurus | (Müller) | |
| grass webworm | Herpetogramma licarsisalis (Walker) | LEPIDOPTERA | Crambidae | Herpetogramma | licarsisalis | (Walker) | |
| grasshopper bee fly | Systoechus vulgaris Loew | DIPTERA | Bombyliidae | Systoechus | vulgaris | Loew | |
| grasshopper maggots | Blaesoxipha spp. | DIPTERA | Sarcophagidae | Blaesoxipha | spp. | ||
| gray garden slug | Agriolimax reticulatus (Müller) | STYLOMMATOPHORA | Agriolimacidae | Agriolimax | reticulatus | (Müller) | |
| gray lawn leafhopper | Exitianus exitiosus (Uhler) | HEMIPTERA | Cicadellidae | Exitianus | exitiosus | (Uhler) | |
| gray pineapple mealybug | Dysmicoccus neobrevipes Beardsley | HEMIPTERA | Pseudococcidae | Dysmicoccus | neobrevipes | Beardsley | |
| gray sugarcane mealybug | Dysmicoccus boninsis (Kuwana) | HEMIPTERA | Pseudococcidae | Dysmicoccus | boninsis | (Kuwana) | |
| gray sunflower seed weevil | Smicronyx sordidus LeConte | COLEOPTERA | Curculionidae | Smicronyx | sordidus | LeConte | |
| gray willow leaf beetle | Tricholochmaea decora decora (Say) | COLEOPTERA | Chrysomelidae | Tricholochmaea | decora decora | (Say) | |
| graybanded leafroller | Argyrotaenia mariana (Fernald) | LEPIDOPTERA | Tortricidae | Argyrotaenia | mariana | (Fernald) | |
| great ash sphinx | Sphinx chersis (Hübner) | LEPIDOPTERA | Sphingidae | Sphinx | chersis | (Hübner) | |
| Great Basin wireworm | Ctenicera pruinina (Horn) | COLEOPTERA | Elateridae | Ctenicera | pruinina | (Horn) | |
| greater wax moth | Galleria mellonella (Linnaeus) | LEPIDOPTERA | Pyralidae | Galleria | mellonella | (Linnaeus) | |
| greedy scale | Hemiberlesia rapax (Comstock) | HEMIPTERA | Diaspididae | Hemiberlesia | rapax | (Comstock) | |
| green budworm | Hedya nubiferana (Haworth) | LEPIDOPTERA | Tortricidae | Hedya | nubiferana | (Haworth) | |
| green cloverworm | Hypena scabra (Fabricius) | LEPIDOPTERA | Noctuidae | Hypena | scabra | (Fabricius) | |
| green fruitworm | Lithophane antennata (Walker) | LEPIDOPTERA | Noctuidae | Lithophane | antennata | (Walker) | |
| green garden looper | Chrysodeixis eriosoma (Doubleday) | LEPIDOPTERA | Noctuidae | Chrysodeixis | eriosoma | (Doubleday) | |
| green June beetle | Cotinis nitida (Linnaeus) | COLEOPTERA | Scarabaeidae | Cotinis | nitida | (Linnaeus) | |
| green peach aphid | Myzus persicae (Sulzer) | HEMIPTERA | Aphididae | Myzus | persicae | (Sulzer) | |
| green rose chafer | Dichelonyx backi (Kirby) | COLEOPTERA | Scarabaeidae | Dichelonyx | backi | (Kirby) | |
| green scale | Coccus viridis (Green) | HEMIPTERA | Coccidae | Coccus | viridis | (Green) | |
| green shield scale | Pulvinaria psidii Maskell | HEMIPTERA | Coccidae | Pulvinaria | psidii | Maskell | |
| green sphinx | Tinostoma smaragditis (Meyrick) | LEPIDOPTERA | Sphingidae | Tinostoma | smaragditis | (Meyrick) | |
| green spruce aphid | Cinara fornacula Hottes | HEMIPTERA | Aphididae | Cinara | fornacula | Hottes | |
| green stink bug | Acrosternum hilare (Say) | HEMIPTERA | Pentatomidae | Acrosternum | hilare | (Say) | |
| greenbug | Schizaphis graminum (Rondani) | HEMIPTERA | Aphididae | Schizaphis | graminum | (Rondani) | |
| greenheaded spruce sawfly | Pikonema dimmockii (Cresson) | HYMENOPTERA | Tenthredinidae | Pikonema | dimmockii | (Cresson) | |
| greenhouse leaftier* | Udea rubigalis (Guenée) | LEPIDOPTERA | Crambidae | Udea | rubigalis | (Guenée) | *Also called celery leaftier |
| greenhouse orthezia | Orthezia insignis Browne | HEMIPTERA | Ortheziidae | Orthezia | insignis | Browne | |
| greenhouse slug | Milax gagates (Draparnaud) | STYLOMMATOPHORA | Limacidae | Milax | gagates | (Draparnaud) | |
| greenhouse stone cricket | Tachycines asynamorus Adelung | ORTHOPTERA | Gryllacrididae | Tachycines | asynamorus | Adelung | |
| greenhouse thrips | Heliothrips haemorrhoidalis (Bouch) | THYSANOPTERA | Thripidae | Heliothrips | haemorrhoidalis | (Bouch) | |
| greenhouse whitefly | Trialeurodes vaporariorum (Westwood) | HEMIPTERA | Aleyrodidae | Trialeurodes | vaporariorum | (Westwood) | |
| greenstriped grasshopper | Chortophaga viridifasciata (De Geer) | ORTHOPTERA | Acrididae | Chortophaga | viridifasciata | (De Geer) | |
| greenstriped mapleworm | Dryocampa rubicunda (Fabricius) | LEPIDOPTERA | Saturniidae | Dryocampa | rubicunda | (Fabricius) | |
| gregarious oak leafminer | Cameraria cincinnatiella (Chambers) | LEPIDOPTERA | Gracillariidae | Cameraria | cincinnatiella | (Chambers) | |
| ground mealybug | Rhizoecus falcifer Künckel d'Herculais | HEMIPTERA | Pseudococcidae | Rhizoecus | falcifer | Künckel d'Herculais | |
| guar midge | Contarinia texana (Felt) | DIPTERA | Cecidomyiidae | Contarinia | texana | (Felt) | |
| Guatemalan potato moth | Tecia solanivora (Povolny) | LEPIDOPTERA | Gelechiidae | Tecia | solanivora | (Povolny) | |
| Guinea ant | Tetramorium bicarinatum (Nylander) | HYMENOPTERA | Formicidae | Tetramorium | bicarinatum | (Nylander) | |
| Guinea feather louse | Goniodes numidae Möjberg | PHTHIRAPTERA | Philopteridae | Goniodes | numidae | Möjberg | |
| Gulf Coast tick | Amblyomma maculatum Koch | ACARI | Ixodidae | Amblyomma | maculatum | Koch | |
| Gulf wireworm | Conoderus amplicollis (Gyllenhal) | COLEOPTERA | Elateridae | Conoderus | amplicollis | (Gyllenhal) | |
| gypsy ant | Aphaenogaster araneoides Emery | HYMENOPTERA | Formicidae | Aphaenogaster | araneoides | Emery | |
| gypsy moth | Lymantria dispar (Linnaeus) | LEPIDOPTERA | Lymantriidae | Lymantria | dispar | (Linnaeus) | |
| hackberry engraver | Scolytus muticus Say | COLEOPTERA | Curculionidae | Scolytus | muticus | Say | |
| hackberry lace bug | Corythucha celtidis Osborn & Drake | HEMIPTERA | Tingidae | Corythucha | celtidis | Osborn & Drake | |
| hackberry nipplegall maker | Pachypsylla celtidismamma (Fletcher) | HEMIPTERA | Psyllidae | Pachypsylla | celtidismamma | (Fletcher) | |
| hag moth | Phobetron pithecium (J.E.Smith) | LEPIDOPTERA | Limacodidae | Phobetron | pithecium | (J.E.Smith) | |
| hairy chinch bug | Blissus leucopterus hirtus Montandon | HEMIPTERA | Blissidae | Blissus | leucopterus hirtus | Montandon | |
| hairy fungus beetle | Typhaea stercorea (Linnaeus) | COLEOPTERA | Mycetophagidae | Typhaea | stercorea | (Linnaeus) | |
| hairy maggot blow fly | Chrysomya rufifacies (Macquart) | DIPTERA | Calliphoridae | Chrysomya | rufifacies | (Macquart) | |
| hairy rove beetle | Creophilus maxillosus (Linnaeus) | COLEOPTERA | Staphylinidae | Creophilus | maxillosus | (Linnaeus) | |
| hairy spider beetle | Ptinus villiger (Reitter) | COLEOPTERA | Ptinidae | Ptinus | villiger | (Reitter) | |
| half-black bumble bee | Bombus vagans (Smith) | HYMENOPTERA | Apidae | Bombus | vagans | (Smith) | |
| Hall scale | Nilotaspis halli (Green) | HEMIPTERA | Diaspididae | Nilotaspis | halli | (Green) | |
| hard maple budminer | Obrussa ochrefasciella (Chambers) | LEPIDOPTERA | Nepticulidae | Obrussa | ochrefasciella | (Chambers) | |
| harlequin bug | Murgantia histrionica (Hahn) | HEMIPTERA | Pentatomidae | Murgantia | histrionica | (Hahn) | |
| harlequin cockroach | Neostylopyga rhombifolia (Stoll) | BLATTODEA | Blattidae | Neostylopyga | rhombifolia | (Stoll) | |
| hau leafminer | Philodoria hauicola (Swezey) | LEPIDOPTERA | Gracillariidae | Philodoria | hauicola | (Swezey) | |
| Hawaiian antlion | Eidoleon wilsoni (McLachlan) | NEUROPTERA | Myrmeleontidae | Eidoleon | wilsoni | (McLachlan) | |
| Hawaiian beet webworm | Spoladea recurvalis (Fabricius) | LEPIDOPTERA | Crambidae | Spoladea | recurvalis | (Fabricius) | |
| Hawaiian bud moth | Helicoverpa hawaiiensis (Quaintance & Brues) | LEPIDOPTERA | Noctuidae | Helicoverpa | hawaiiensis | (Quaintance & Brues) | |
| Hawaiian carpenter ant | Camponotus variegatus (F. Smith) | HYMENOPTERA | Formicidae | Camponotus | variegatus | (F. Smith) | |
| Hawaiian flower thrips | Thrips hawaiiensis (Morgan) | THYSANOPTERA | Thripidae | Thrips | hawaiiensis | (Morgan) | |
| Hawaiian grass thrips | Anaphothrips swezeyi Moulton | THYSANOPTERA | Thripidae | Anaphothrips | swezeyi | Moulton | |
| Hawaiian pelagic water strider | Halobates hawaiiensis Usinger | HEMIPTERA | Gerridae | Halobates | hawaiiensis | Usinger | |
| Hawaiian sphinx | Hyles calida (Butler) | LEPIDOPTERA | Sphingidae | Hyles | calida | (Butler) | |
| hawthorn lace bug | Corythucha cydoniae (Fitch) | HEMIPTERA | Tingidae | Corythucha | cydoniae | (Fitch) | |
| hawthorn mealybug | Phenacoccus dearnessi (King) | HEMIPTERA | Pseudococcidae | Phenacoccus | dearnessi | (King) | |
| hazelnut weevil | Curculio obtusus (Blanchard) | COLEOPTERA | Curculionidae | Curculio | obtusus | (Blanchard) | |
| head louse | Pediculus humanus capitis De Geer | PHTHIRAPTERA | Pediculidae | Pediculus | humanus capitis | De Geer | |
| heath spittlebug | Clastoptera saintcyri Provancher | HEMIPTERA | Cercopidae | Clastoptera | saintcyri | Provancher | |
| hellgrammite* | Corydalus cornutus (Linnaeus) | NEUROPTERA | Corydalidae | Corydalus | cornutus | (Linnaeus) | *Adult called dobsonfly |
| hemispherical scale | Saissetia coffeae (Walker) | HEMIPTERA | Coccidae | Saissetia | coffeae | (Walker) | |
| hemlock borer | Phaenops fulvoguttata (Harris) | COLEOPTERA | Buprestidae | Phaenops | fulvoguttata | (Harris) | |
| hemlock engraver | Scolytus tsugae (Swaine) | COLEOPTERA | Curculionidae | Scolytus | tsugae | (Swaine) | |
| hemlock looper | Lambdina fiscellaria fiscellaria (Guenée) | LEPIDOPTERA | Geometridae | Lambdina | fiscellaria fiscellaria | (Guenée) | |
| hemlock sawfly | Neodiprion tsugae Ross | HYMENOPTERA | Diprionidae | Neodiprion | tsugae | Ross | |
| hemlock scale | Abgrallaspis ithacae (Ferris) | HEMIPTERA | Diaspididae | Abgrallaspis | ithacae | (Ferris) | |
| hemlock woolly adelgid | Adelges tsugae Annand | HEMIPTERA | Adelgidae | Adelges | tsugae | Annand | |
| Hessian fly | Mayetiola destructor (Say) | DIPTERA | Cecidomyiidae | Mayetiola | destructor | (Say) | |
| hibiscus leafminer | Philodoria hibiscella (Swezey) | LEPIDOPTERA | Gracillariidae | Philodoria | hibiscella | (Swezey) | |
| hibiscus mealybug | Nipaecoccus viridis (Newstead) | HEMIPTERA | Pseudococcidae | Nipaecoccus | viridis | (Newstead) | |
| hibiscus whitefly | Singhius hibisci (Kotinsky) | HEMIPTERA | Aleyrodidae | Singhius | hibisci | (Kotinsky) | |
| hickory bark beetle | Scolytus quadrispinosus Say | COLEOPTERA | Curculionidae | Scolytus | quadrispinosus | Say | |
| hickory horned devil* | Citheronia regalis (Fabricius) | LEPIDOPTERA | Saturniidae | Citheronia | regalis | (Fabricius) | *Adult called regal moth |
| hickory leafroIler | Argyrotaenia juglandana (Fernald) | LEPIDOPTERA | Tortricidae | Argyrotaenia | juglandana | (Fernald) | |
| hickory plant bug | Neolygus caryae (Knight) | HEMIPTERA | Miridae | Neolygus | caryae | (Knight) | |
| hickory shuckworm | Cydia caryana (Fitch) | LEPIDOPTERA | Tortricidae | Cydia | caryana | (Fitch) | |
| hickory tussock moth | Lophocampa caryae Harris | LEPIDOPTERA | Arctiidae | Lophocampa | caryae | Harris | |
| hide beetle | Dermestes maculatus De Geer | COLEOPTERA | Dermestidae | Dermestes | maculatus | De Geer | |
| high country bumble bee | Bombus balteatus Dahlbom | HYMENOPTERA | Apidae | Bombus | balteatus | Dahlbom | |
| High Plains grasshopper | Dissosteira longipennis (Thomas) | ORTHOPTERA | Acrididae | Dissosteira | longipennis | (Thomas) | |
| hobo spider | Tegenaria agrestis (Walckenaer) | ARANEAE | Agelenidae | Tegenaria | agrestis | (Walckenaer) | |
| hog follicle mite | Demodex phylloides Csokor | ACARI | Demodicidae | Demodex | phylloides | Csokor | |
| hog louse | Haematopinus suis (Linnaeus) | PHTHIRAPTERA | Haematopinidae | Haematopinus | suis | (Linnaeus) | |
| holly leafminer | Phytomyza ilicis Curtis | DIPTERA | Agromyzidae | Phytomyza | ilicis | Curtis | |
| holly scale | Dynaspidiotus britannicus (Newstead) | HEMIPTERA | Diaspididae | Dynaspidiotus | britannicus | (Newstead) | |
| hollyhock plant bug | Brooksetta althaeae (Hussey) | HEMIPTERA | Miridae | Brooksetta | althaeae | (Hussey) | |
| hollyhock weevil | Apion longirostre Olivier | COLEOPTERA | Brentidae | Rhopalapion | longirostre | Olivier | |
| honey bee | Apis mellifera Linnaeus | HYMENOPTERA | Apidae | Apis | mellifera | Linnaeus | |
| honey bee mite | Acarapis woodi (Rennie) | ACARI | Tarsonemidae | Acarapis | woodi | (Rennie) | |
| honeylocust plant bug | Blepharidopterus chlorionis (Say) | HEMIPTERA | Miridae | Blepharidopterus | chlorionis | (Say) | |
| honeylocust spider mite | Platytetranychus multidigituli (Ewing) | ACARI | Tetranychidae | Platytetranychus | multidigituli | (Ewing) | |
| honeysuckle leafminer | Swezeyula lonicerae Zimmerman & Bradley | LEPIDOPTERA | Elachistidae | Swezeyula | lonicerae | Zimmerman & Bradley | |
| honeysuckle sawfly | Abia inflata (Norton) | HYMENOPTERA | Cimbicidae | Abia | inflata | (Norton) | |
| hop aphid | Phorodon humuli (Schrank) | HEMIPTERA | Aphididae | Phorodon | humuli | (Schrank) | |
| hop flea beetle | Psylliodes punctulata Melsheimer | COLEOPTERA | Chrysomelidae | Psylliodes | punctulata | Melsheimer | |
| hop looper | Hypena humuli Harris | LEPIDOPTERA | Noctuidae | Hypena | humuli | Harris | |
| hop plant bug | Taedia hawleyi (Knight) | HEMIPTERA | Miridae | Taedia | hawleyi | (Knight) | |
| horn fly | Haematobia irritans (Linnaeus) | DIPTERA | Muscidae | Haematobia | irritans | (Linnaeus) | |
| horned passalus | Odontotaenius disjunctus (Illiger) | COLEOPTERA | Passalidae | Odontotaenius | disjunctus | (Illiger) | |
| horned squash bug | Anasa armigera (Say) | HEMIPTERA | Coreidae | Anasa | armigera | (Say) | |
| hornet moth | Sesia apiformis (Clerck) | LEPIDOPTERA | Sesiidae | Sesia | apiformis | (Clerck) | |
| horse biting louse | Bovicola equi (Denny) | PHTHIRAPTERA | Trichodectidae | Bovicola | equi | (Denny) | |
| horse bot fly | Gasterophilus intestinalis (De Geer) | DIPTERA | Oestridae | Gasterophilus | intestinalis | (De Geer) | |
| horse follicle mite | Demodex equi Railliet | ACARI | Demodicidae | Demodex | equi | Railliet | |
| horse sucking louse | Haematopinus asini (Linnaeus) | PHTHIRAPTERA | Haematopinidae | Haematopinus | asini | (Linnaeus) | |
| horseradish flea beetle | Phyllotreta armoraciae (Koch) | COLEOPTERA | Chrysomelidae | Phyllotreta | armoraciae | (Koch) | |
| house centipede | Scutigera coleoptrata (Linnaeus) | SCUTIGEROMORPHA | Scutigeridae | Scutigera | coleoptrata | (Linnaeus) | |
| house cricket | Acheta domesticus (Linnaeus) | ORTHOPTERA | Gryllidae | Acheta | domesticus | (Linnaeus) | |
| house fly | Musca domestica Linnaeus | DIPTERA | Muscidae | Musca | domestica | Linnaeus | |
| house mite | Glycyphagus domesticus (DeGeer) | ACARI | Glycyphagidae | Glycyphagus | domesticus | (DeGeer) | |
| house mouse mite | Liponyssoides sanguineus (Hirst) | ACARI | Macronyssidae | Liponyssoides | sanguineus | (Hirst) | |
| household casebearer | Phereoeca uterella Walsingham | LEPIDOPTERA | Tineidae | Phereoeca | uterella | Walsingham | |
| huisache girdler | Oncideres pustulatus LeConte | COLEOPTERA | Cerambycidae | Oncideres | pustulatus | LeConte | |
| human flea | Pulex irritans (Linnaeus) | SIPHONAPTERA | Pulicidae | Pulex | irritans | (Linnaeus) | |
| Hunt bumble bee | Bombus huntii Greene | HYMENOPTERA | Apidae | Bombus | huntii | Greene | |
| hunting billbug | Sphenophorus venatus vestitus Chittenden | COLEOPTERA | Curculionidae | Sphenophorus | venatus vestitus | Chittenden | |
| hyaline grass bug | Liorhyssus hyalinus (Fabricius) | HEMIPTERA | Rhopalidae | Liorhyssus | hyalinus | (Fabricius) | |
| ilima leafminer | Philodoria marginestrigata (Walsingham) | LEPIDOPTERA | Gracillariidae | Philodoria | marginestrigata | (Walsingham) | |
| ilima moth | Amyna natalis (Walker) | LEPIDOPTERA | Noctuidae | Amyna | natalis | (Walker) | |
| imbricated snout beetle | Epicaerus imbricatus (Say) | COLEOPTERA | Curculionidae | Epicaerus | imbricatus | (Say) | |
| immigrant acacia weevil | Orthorhinus klugi Boheman | COLEOPTERA | Curculionidae | Orthorhinus | klugi | Boheman | |
| imperial moth | Eacles imperialis (Drury) | LEPIDOPTERA | Saturniidae | Eacles | imperialis | (Drury) | |
| imported cabbageworm | Pieris rapae (Linnaeus) | LEPIDOPTERA | Pieridae | Pieris | rapae | (Linnaeus) | |
| imported crucifer weevil | Baris lepidii Germar | COLEOPTERA | Curculionidae | Baris | lepidii | Germar | |
| imported currantworm | Nematus ribesii (Scopoli) | HYMENOPTERA | Tenthredinidae | Nematus | ribesii | (Scopoli) | |
| imported longhorned weevil | Calomycterus setarius Roelofs | COLEOPTERA | Curculionidae | Calomycterus | setarius | Roelofs | |
| imported willow leaf beetle | Plagiodera versicolora (Laicharting) | COLEOPTERA | Chrysomelidae | Plagiodera | versicolora | (Laicharting) |