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| Common Name | Scientific Name | Order | Family | Genus | Species | Author | notes |
|---|---|---|---|---|---|---|---|
| southeastern blueberry bee | Habropoda laboriosa (Fabricius) | HYMENOPTERA | Anthophoridae | Habropoda | laboriosa | (Fabricius) | |
| southern armyworm | Spodoptera eridania (Stoll) | LEPIDOPTERA | Noctuidae | Spodoptera | eridania | (Stoll) | |
| southern beet webworm | Herpetogramma bipunctalis (Fabricius) | LEPIDOPTERA | Crambidae | Herpetogramma | bipunctalis | (Fabricius) | |
| southern black widow spider | Latrodectus mactans (Fabricius) | ARANEAE | Theridiidae | Latrodectus | mactans | (Fabricius) | |
| southern buffalo gnat | Cnephia pecuarum (Riley) | DIPTERA | Simuliidae | Cnephia | pecuarum | (Riley) | |
| southern cabbageworm | Pontia protodice (Boisduval & LeConte) | LEPIDOPTERA | Pieridae | Pontia | protodice | (Boisduval & LeConte) | |
| southern cattle tick | Boophilus microplus (Canestrini) | ACARI | Ixodidae | Boophilus | microplus | (Canestrini) | |
| southern chinch bug | Blissus insularis Barber | HEMIPTERA | Blissidae | Blissus | insularis | Barber | |
| southern corn billbug | Sphenophorus callosus (Olivier) | COLEOPTERA | Curculionidae | Sphenophorus | callosus | (Olivier) | |
| southern corn rootworm* | Diabrotica undecimpunctata howardi Barber | COLEOPTERA | Chrysomelidae | Diabrotica | undecimpunctata howardi | Barber | *Adult called spotted cucumber beetle |
| southern corn stalk borer | Diatraea crambidoides (Grote) | LEPIDOPTERA | Crambidae | Diatraea | crambidoides | (Grote) | |
| southern fire ant | Solenopsis xyloni McCook | HYMENOPTERA | Formicidae | Solenopsis | xyloni | McCook | |
| southern garden leafhopper | Empoasca solana DeLong | HEMIPTERA | Cicadellidae | Empoasca | solana | DeLong | |
| southern green stink bug | Nezara viridula (Linnaeus) | HEMIPTERA | Pentatomidae | Nezara | viridula | (Linnaeus) | |
| southern house mosquito | Culex quinquefasciatus Say | DIPTERA | Culicidae | Culex | quinquefasciatus | Say | |
| southern lyctus beetle | Lyctus planicollis LeConte | COLEOPTERA | Lyctidae | Lyctus | planicollis | LeConte | |
| southern masked chafer | Cyclocephala lurida Bland | COLEOPTERA | Scarabaeidae | Cyclocephala | lurida | Bland | |
| southern mole cricket | Scapteriscus borellii Giglio-Tos | ORTHOPTERA | Gryllotalpidae | Scapteriscus | borellii | Giglio-Tos | |
| southern pine beetle | Dendroctonus frontalis Zimmermann | COLEOPTERA | Curculionidae | Dendroctonus | frontalis | Zimmermann | |
| southern pine coneworm | Dioryctria amatella (Hulst) | LEPIDOPTERA | Pyralidae | Dioryctria | amatella | (Hulst) | |
| southern pine root weevil | Hylobius aliradicis Warner | COLEOPTERA | Curculionidae | Hylobius | aliradicis | Warner | |
| southern pine sawyer | Monochamus titillator (Fabricius) | COLEOPTERA | Cerambycidae | Monochamus | titillator | (Fabricius) | |
| southern plains bumble bee | Bombus fraternus (Smith) | HYMENOPTERA | Apidae | Bombus | fraternus | (Smith) | |
| southern potato wireworm | Conoderus falli (Lane) | COLEOPTERA | Elateridae | Conoderus | falli | (Lane) | |
| southern red mite | Oligonychus ilicis (McGregor) | ACARI | Tetranychidae | Oligonychus | ilicis | (McGregor) | |
| southern tamarisk beetle | Diorhabda meridionalis Berti and Rapilly | COLEOPTERA | Chrysomelidae | Diorhabda | meridionalis | Berti and Rapilly | |
| southwestern corn borer | Diatraea grandiosella Dyar | LEPIDOPTERA | Crambidae | Diatraea | grandiosella | Dyar | |
| southwestern Hercules beetle | Dynastes granti Horn | COLEOPTERA | Scarabaeidae | Dynastes | granti | Horn | |
| southwestern ironclad beetle | Zopherus nodulosus haldemani Horn | COLEOPTERA | Zopheridae | Zopherus | nodulosus haldemani | Horn | |
| southwestern pine tiger moth | Lophocampa ingens (H. Edwards, 1881) | LEPIDOPTERA | Arctiidae | Lophocampa | ingens | (H. Edwards, 1881) | |
| southwestern pine tip moth | Rhyacionia neomexicana (Dyar) | LEPIDOPTERA | Tortricidae | Rhyacionia | neomexicana | (Dyar) | |
| southwestern squash vine borer | Melittia calabaza Duckworth & Eichlin | LEPIDOPTERA | Sesiidae | Melittia | calabaza | Duckworth & Eichlin | |
| southwestern tent caterpillar | Malacosoma incurvum (Hy. Edwards) | LEPIDOPTERA | Lasiocampidae | Malacosoma | incurvum | (Hy. Edwards) | |
| sow thistle aphid | Hyperomyzus lactucae (Linnaeus) | HEMIPTERA | Aphididae | Hyperomyzus | lactucae | (Linnaeus) | |
| soybean aphid | Aphis glycines Matsumura | HEMIPTERA | Aphididae | Aphis | glycines | Matsumura | |
| soybean looper | Chrysodeixis includens (Walker) | LEPIDOPTERA | Noctuidae | Chrysodeixis | includens | (Walker) | |
| soybean nodule fly | Rivellia quadrifasciata (Macquart) | DIPTERA | Platystomatidae | Rivellia | quadrifasciata | (Macquart) | |
| soybean thrips | Neohydatothrips variabilis (Beach) | THYSANOPTERA | Thripidae | Neohydatothrips | variabilis | (Beach) | |
| Spanishfly | Lytta vesicatoria (Linnaeus) | COLEOPTERA | Meloidae | Lytta | vesicatoria | (Linnaeus) | |
| speckled green fruitworm | Orthosia hibisci (Guenée) | LEPIDOPTERA | Noctuidae | Orthosia | hibisci | (Guenée) | |
| spicebush swallowtail | Papilio troilus Linnaeus | LEPIDOPTERA | Papilionidae | Papilio | troilus | Linnaeus | |
| spider mite destroyer | Stethorus punctum picipes Casey | COLEOPTERA | Coccinellidae | Stethorus | punctum picipes | Casey | |
| spinach flea beetle | Disonycha xanthomelas (Dalman) | COLEOPTERA | Chrysomelidae | Disonycha | xanthomelas | (Dalman) | |
| spinach leafminer | Pegomya hyoscyami (Panzer) | DIPTERA | Anthomyiidae | Pegomya | hyoscyami | (Panzer) | |
| spined assassin bug | Sinea diadema (Fabricius) | HEMIPTERA | Reduviidae | Sinea | diadema | (Fabricius) | |
| spined rat louse | Polyplax spinulosa (Burmeister) | PHTHIRAPTERA | Polyplacidae | Polyplax | spinulosa | (Burmeister) | |
| spined soldier bug | Podisus maculiventris (Say) | HEMIPTERA | Pentatomidae | Podisus | maculiventris | (Say) | |
| spined stilt bug | Jalysus wickhami Van Duzee | HEMIPTERA | Berytidae | Jalysus | wickhami | Van Duzee | |
| spiny assassin bug | Polididus armatissimus Stål | HEMIPTERA | Reduviidae | Polididus | armatissimus | Stål | |
| spiny grass aphid | Sipha elegans (del Guercio) | HEMIPTERA | Aphididae | Sipha | elegans | (del Guercio) | |
| spiny oakworm | Anisota stigma (Fabricius) | LEPIDOPTERA | Saturniidae | Anisota | stigma | (Fabricius) | |
| spinybacked spider | Gasteracantha cancriformis (Linnaeus) | ARANEAE | Araneidae | Gasteracantha | cancriformis | (Linnaeus) | |
| spirea aphid | Aphis spiraecola Patch | HEMIPTERA | Aphididae | Aphis | spiraecola | Patch | |
| spotted alfalfa aphid | Therioaphis trifolii forma maculata (Buckton) | HEMIPTERA | Aphididae | Therioaphis | trifolii forma maculata | (Buckton) | |
| spotted asparagus beetle | Crioceris duodecimpunctata (Linnaeus) | COLEOPTERA | Chrysomelidae | Crioceris | duodecimpunctata | (Linnaeus) | |
| spotted beet webworm | Hymenia perspectalis (Hübner) | LEPIDOPTERA | Crambidae | Hymenia | perspectalis | (Hübner) | |
| spotted blister beetle | Epicauta maculata (Say) | COLEOPTERA | Meloidae | Epicauta | maculata | (Say) | |
| spotted cucumber beetle* | Diabrotica undecimpunctata howardi Barber | COLEOPTERA | Chrysomelidae | Diabrotica | undecimpunctata howardi | Barber | *Immature called southern corn rootworm |
| spotted cutworm | Xestia spp. | LEPIDOPTERA | Noctuidae | Xestia | spp. | ||
| spotted garden slug | Limax maximus Linnaeus | STYLOMMATOPHORA | Limacidae | Limax | maximus | Linnaeus | |
| spotted hairy fungus beetle | Mycetophagus quadriguttatus P. Miner | COLEOPTERA | Mycetophagidae | Mycetophagus | quadriguttatus | P. Miner | |
| spotted loblolly pine sawfly | Neodiprion taedae taedae Ross | HYMENOPTERA | Diprionidae | Neodiprion | taedae taedae | Ross | |
| spotted Mediterranean cockroach | Ectobius pallidus (Olivier) | BLATTODEA | Blattellidae | Ectobius | pallidus | (Olivier) | |
| spotted pine sawyer | Monochamus mutator LeConte | COLEOPTERA | Cerambycidae | Monochamus | mutator | LeConte | |
| spotted tentiform leafminer | Phyllonorycter blancardella (Fabricius) | LEPIDOPTERA | Gracillariidae | Phyllonorycter | blancardella | (Fabricius) | |
| spotted tussock moth | Lophocampa maculata Harris | LEPIDOPTERA | Arctiidae | Lophocampa | maculata | Harris | |
| spottedwinged antlion | Dendroleon obsoletus (Say) | NEUROPTERA | Myrmeleontidae | Dendroleon | obsoletus | (Say) | |
| spring cankerworm | Paleacrita vernata (Peck) | LEPIDOPTERA | Geometridae | Paleacrita | vernata | (Peck) | |
| spruce aphid | Elatobium abietinum (Walker) | HEMIPTERA | Aphididae | Elatobium | abietinum | (Walker) | |
| spruce beetle | Dendroctonus rufipennis Kirby | COLEOPTERA | Curculionidae | Dendroctonus | rufipennis | Kirby | |
| spruce bud midge | Dasineura swainei (Felt) | DIPTERA | Cecidomyiidae | Dasineura | swainei | (Felt) | |
| spruce bud moth | Zeiraphera canadensis Mutuura & Freeman | LEPIDOPTERA | Tortricidae | Zeiraphera | canadensis | Mutuura & Freeman | |
| spruce bud scale | Physokermes piceae (Schrank) | HEMIPTERA | Coccidae | Physokermes | piceae | (Schrank) | |
| spruce budworm | Choristoneura fumiferana (Clemens) | LEPIDOPTERA | Tortricidae | Choristoneura | fumiferana | (Clemens) | |
| spruce coneworm | Dioryctria reniculelloides Mutuura & Munroe | LEPIDOPTERA | Pyralidae | Dioryctria | reniculelloides | Mutuura & Munroe | |
| spruce mealybug | Puto sandini Washburn | HEMIPTERA | Pseudococcidae | Puto | sandini | Washburn | |
| spruce needleminer | Taniva albolineana (Kearfott) | LEPIDOPTERA | Tortricidae | Taniva | albolineana | (Kearfott) | |
| spruce seed moth | Cydia strobilella (Linnaeus) | LEPIDOPTERA | Tortricidae | Cydia | strobilella | (Linnaeus) | |
| spruce spider mite | Oligonychus ununguis (Jacobi) | ACARI | Tetranychidae | Oligonychus | ununguis | (Jacobi) | |
| squarenecked grain beetle | Cathartus quadricollis (Guenée) | COLEOPTERA | Silvanidae | Cathartus | quadricollis | (Guenée) | |
| squarenosed fungus beetle | Lathridius minutus (Linnaeus) | COLEOPTERA | Lathridiidae | Lathridius | minutus | (Linnaeus) | |
| squash beetle | Epilachna borealis (Fabricius) | COLEOPTERA | Coccinellidae | Epilachna | borealis | (Fabricius) | |
| squash bug | Anasa tristis (De Geer) | HEMIPTERA | Coreidae | Anasa | tristis | (De Geer) | |
| squash vine borer | Melittia cucurbitae (Harris) | LEPIDOPTERA | Sesiidae | Melittia | cucurbitae | (Harris) | |
| stable fly | Stomoxys calcitrans (Linnaeus) | DIPTERA | Muscidae | Stomoxys | calcitrans | (Linnaeus) | |
| stalk borer | Papaipema nebris (Guenée) | LEPIDOPTERA | Noctuidae | Papaipema | nebris | (Guenée) | |
| star jasmine thrips | Thrips orientalis (Bagnall) | THYSANOPTERA | Thripidae | Thrips | orientalis | (Bagnall) | |
| steelblue lady beetle | Halmus chalybeus (Boisduval) | COLEOPTERA | Coccinellidae | Halmus | chalybeus | (Boisduval) | |
| Stevens leafhopper | Empoasca stevensi Young | HEMIPTERA | Cicadellidae | Empoasca | stevensi | Young | |
| sticktight flea | Echidnophaga gallinacea (Westwood) | SIPHONAPTERA | Pulicidae | Echidnophaga | gallinacea | (Westwood) | |
| stinging rose caterpillar | Parasa indetermina (Boisduval) | LEPIDOPTERA | Limacodidae | Parasa | indetermina | (Boisduval) | |
| stink beetle | Nomius pygameus (Dejean) | COLEOPTERA | Carabidae | Nomius | pygameus | (Dejean) | |
| stored nut moth | Aphomia gularis (Zeller) | LEPIDOPTERA | Pyralidae | Aphomia | gularis | (Zeller) | |
| straw itch mite | Pyemotes tritici (Lagrèze-Fossat & Montané) | ACARI | Pyemotidae | Pyemotes | tritici | (Lagrèze-Fossat & Montané) | |
| strawberry aphid | Chaetosiphon fragaefolii (Cockerell) | HEMIPTERA | Aphididae | Chaetosiphon | fragaefolii | (Cockerell) | |
| strawberry bud weevil | Anthonomus signatus Say | COLEOPTERA | Curculionidae | Anthonomus | signatus | Say | |
| strawberry crown borer | Tyloderma fragariae (Riley) | COLEOPTERA | Curculionidae | Tyloderma | fragariae | (Riley) | |
| strawberry crown moth | Synanthedon bibionipennis (Boisduval) | LEPIDOPTERA | Sesiidae | Synanthedon | bibionipennis | (Boisduval) | |
| strawberry crownminer | Monochroa fragariae (Busck) | LEPIDOPTERA | Gelechiidae | Monochroa | fragariae | (Busck) | |
| strawberry leafroller | Ancylis comptana (Frölich) | LEPIDOPTERA | Tortricidae | Ancylis | comptana | (Frölich) | |
| strawberry root aphid | Aphis forbesi Weed | HEMIPTERA | Aphididae | Aphis | forbesi | Weed | |
| strawberry root weevil | Otiorhynchus ovatus (Linnaeus) | COLEOPTERA | Curculionidae | Otiorhynchus | ovatus | (Linnaeus) | |
| strawberry rootworm | Paria fragariae Wilcox | COLEOPTERA | Chrysomelidae | Paria | fragariae | Wilcox | |
| strawberry sap beetle | Stelidota geminata (Say) | COLEOPTERA | Nitidulidae | Stelidota | geminata | (Say) | |
| strawberry spider mite | Tetranychus turkestani Ugarov & Nikolski | ACARI | Tetranychidae | Tetranychus | turkestani | Ugarov & Nikolski | |
| strawberry whitefly | Trialeurodes packardi (Morrill) | HEMIPTERA | Aleyrodidae | Trialeurodes | packardi | (Morrill) | |
| striped alder sawfly | Hemichroa crocea (Geoffroy) | HYMENOPTERA | Tenthredinidae | Hemichroa | crocea | (Geoffroy) | |
| striped ambrosia beetle | Trypodendron lineatum (Olivier) | COLEOPTERA | Curculionidae | Trypodendron | lineatum | (Olivier) | |
| striped blister beetle | Epicauta vittata (Fabricius) | COLEOPTERA | Meloidae | Epicauta | vittata | (Fabricius) | |
| striped cucumber beetle | Acalymma vittatum (Fabricius) | COLEOPTERA | Chrysomelidae | Acalymma | vittatum | (Fabricius) | |
| striped cutworm | Euxoa tessellata (Harris) | LEPIDOPTERA | Noctuidae | Euxoa | tessellata | (Harris) | |
| striped earwig | Labidura riparia (Pallas) | DERMAPTERA | Labiduridae | Labidura | riparia | (Pallas) | |
| striped flea beetle | Phyllotreta striolata (Fabricius) | COLEOPTERA | Chrysomelidae | Phyllotreta | striolata | (Fabricius) | |
| striped garden caterpillar | Trichordestra legitima (Grote) | LEPIDOPTERA | Noctuidae | Trichordestra | legitima | (Grote) | |
| striped horse fly | Tabanus lineola Fabricius | DIPTERA | Tabanidae | Tabanus | lineola | Fabricius | |
| striped lynx spider | Oxyopes salticus Hentz | ARANEAE | Oxyopidae | Oxyopes | salticus | Hentz | |
| striped mealybug | Ferrisia virgata (Cockerell) | HEMIPTERA | Pseudococcidae | Ferrisia | virgata | (Cockerell) | |
| striped pine scale | Toumeyella pini (King) | HEMIPTERA | Coccidae | Toumeyella | pini | (King) | |
| subtropical pine tip moth | Rhyacionia subtropica Miller | LEPIDOPTERA | Tortricidae | Rhyacionia | subtropica | Miller | |
| subtropical tamarisk beetle | Diorhabda sublineata (Lucas) | COLEOPTERA | Chrysomelidae | Diorhabda | sublineata | (Lucas) | |
| subulina snail | Subulina octona (Bruguière) | STYLOMMATOPHORA | Subulinidae | Subulina | octona | (Bruguière) | |
| suckfly | Tupiocoris notatus (Distant) | HEMIPTERA | Miridae | Tupiocoris | notatus | (Distant) | |
| sugar maple borer | Glycobius speciosus (Say) | COLEOPTERA | Cerambycidae | Glycobius | speciosus | (Say) | |
| sugar pine cone beetle* | Conophthorus ponderosae Hopkins | COLEOPTERA | Curculionidae | Conophthorus | ponderosae | Hopkins | *Also called lodgepole cone beetle and ponderosa pine cone beetle |
| sugarbeet crown borer | Hulstia undulatella (Clemens) | LEPIDOPTERA | Pyralidae | Hulstia | undulatella | (Clemens) | |
| sugarbeet root aphid | Pemphigus populivenae Fitch | HEMIPTERA | Aphididae | Pemphigus | populivenae | Fitch | |
| sugarbeet root maggot | Tetanops myopaeformis (Röder) | DIPTERA | Otitidae | Tetanops | myopaeformis | (Röder) | |
| sugarbeet wireworm | Limonius californicus (Mannerheim) | COLEOPTERA | Elateridae | Limonius | californicus | (Mannerheim) | |
| sugarcane aphid | Melanaphis sacchari (Zehntner) | HEMIPTERA | Aphididae | Melanaphis | sacchari | (Zehntner) | |
| sugarcane beetle | Euetheola humilis rugiceps (LeConte) | COLEOPTERA | Scarabaeidae | Euetheola | humilis rugiceps | (LeConte) | |
| sugarcane borer | Diatraea saccharalis (Fabricius) | LEPIDOPTERA | Crambidae | Diatraea | saccharalis | (Fabricius) | |
| sugarcane bud moth | Erechthias flavistriata (Walsingham) | LEPIDOPTERA | Tineidae | Erechthias | flavistriata | (Walsingham) | |
| sugarcane delphacid | Perkinsiella saccharicida Kirkaldy | HEMIPTERA | Delphacidae | Perkinsiella | saccharicida | Kirkaldy | |
| sugarcane leaf mite | Oligonychus indicus (Hirst) | ACARI | Tetranychidae | Oligonychus | indicus | (Hirst) | |
| sugarcane leafroller | Omiodes accepta (Butler) | LEPIDOPTERA | Crambidae | Omiodes | accepta | (Butler) | |
| sugarcane stalk mite | Steneotarsonemus bancrofti (Michael) | ACARI | Tarsonemidae | Steneotarsonemus | bancrofti | (Michael) | |
| sugarcane thrips | Stenchaetothrips minutus (van Deventer) | THYSANOPTERA | Thripidae | Stenchaetothrips | minutus | (van Deventer) | |
| sumac flea beetle | Blepharida rhois (Forster) | COLEOPTERA | Chrysomelidae | Blepharida | rhois | (Förster) | |
| sunflower beetle | Zygogramma exclamationis (Fabricius) | COLEOPTERA | Chrysomelidae | Zygogramma | exclamationis | (Fabricius) | |
| sunflower bud moth | Suleima helianthana (Riley) | LEPIDOPTERA | Tortricidae | Suleima | helianthana | (Riley) | |
| sunflower headclipping weevil | Haplorhynchites aeneus (Boheman) | COLEOPTERA | Attelabidae | Haplorhynchites | aeneus | (Boheman) | |
| sunflower maggot | Strauzia longipennis (Wiedemann) | DIPTERA | Tephritidae | Strauzia | longipennis | (Wiedemann) | |
| sunflower midge | Contarinia schulzi Gagné | DIPTERA | Cecidomyiidae | Contarinia | schulzi | Gagné | |
| sunflower moth | Homoeosoma electellum (Hulst) | LEPIDOPTERA | Pyralidae | Homoeosoma | electellum | (Hulst) | |
| sunflower root weevil | Baris strenua (LeConte) | COLEOPTERA | Curculionidae | Baris | strenua | (LeConte) | |
| sunflower seed midge | Neolasioptera murtfeldtiana (Felt) | DIPTERA | Cecidomyiidae | Neolasioptera | murtfeldtiana | (Felt) | |
| sunflower spittlebug | Clastoptera xanthocephala Germar | HEMIPTERA | Cercopidae | Clastoptera | xanthocephala | Germar | |
| sunflower stem weevil | Cylindrocopturus adspersus (LeConte) | COLEOPTERA | Curculionidae | Cylindrocopturus | adspersus | (LeConte) | |
| Surinam cockroach | Pycnoscelus surinamensis (Linnaeus) | BLATTODEA | Blaberidae | Pycnoscelus | surinamensis | (Linnaeus) | |
| Swaine jack pine sawfly | Neodiprion swainei Middleton | HYMENOPTERA | Diprionidae | Neodiprion | swainei | Middleton | |
| swallow bug | Oeciacus vicarius Horvath | HEMIPTERA | Cimicidae | Oeciacus | vicarius | Horvath | |
| Swede midge | Contarinia nasturtii Kieffer | DIPTERA | Cecidomyiidae | Contarinia | nasturtii | Kieffer | |
| sweetclover aphid | Therioaphis riehmi (Börner) | HEMIPTERA | Aphididae | Therioaphis | riehmi | (Börner) | |
| sweetclover root borer | Walshia miscecolorella (Chambers) | LEPIDOPTERA | Cosmopterigidae | Walshia | miscecolorella | (Chambers) | |
| sweetclover weevil | Sitona cylindricollis (Förster) | COLEOPTERA | Curculionidae | Sitona | cylindricollis | (Förster) | |
| sweetfern leaf casebearer | Acrobasis comptoniella Hulst | LEPIDOPTERA | Pyralidae | Acrobasis | comptoniella | Hulst | |
| sweetpotato flea beetle | Chaetocnema confinis Crotch | COLEOPTERA | Chrysomelidae | Chaetocnema | confinis | Crotch | |
| sweetpotato hornworm | Agrius cingulata (Fabricius) | LEPIDOPTERA | Sphingidae | Agrius | cingulata | (Fabricius) | |
| sweetpotato leaf beetle | Typophorus nigritus viridicyaneus (Crotch) | COLEOPTERA | Chrysomelidae | Typophorus | nigritus viridicyaneus | (Crotch) | |
| sweetpotato leafminer | Bedellia orchilella Walsingham | LEPIDOPTERA | Bedellidae | Bedellia | orchilella | Walsingham | |
| sweetpotato leafroller | Lygropia tripunctata (Fabricius) | LEPIDOPTERA | Crambidae | Lygropia | tripunctata | (Fabricius) | |
| sweetpotato vine borer | Omphisa anastomosalis (Guenée) | LEPIDOPTERA | Crambidae | Omphisa | anastomosalis | (Guenée) | |
| sweetpotato weevil | Cylas formicarius elegantulus (Summers) | COLEOPTERA | Curculionidae | Cylas | formicarius elegantulus | (Summers) | |
| sweetpotato whitefly | Bemisia tabaci (Gennadius) | HEMIPTERA | Aleyrodidae | Bemisia | tabaci | (Gennadius) | |
| sycamore lace bug | Corythucha ciliata (Say) | HEMIPTERA | Tingidae | Corythucha | ciliata | (Say) | |
| sycamore leaf beetle | Neochlamisus platani (Brown) | COLEOPTERA | Chrysomelidae | Neochlamisus | platani | (Brown) | |
| sycamore tussock moth | Halysidota harrisii Walsh | LEPIDOPTERA | Arctiidae | Halysidota | harrisii | Walsh | |
| Tahitian coconut weevil | Diocalandra taitensis (Guérin-Méneville) | COLEOPTERA | Curculionidae | Diocalandra | taitensis | (Guérin-Méneville) | |
| tamarind weevil | Sitophilus linearis (Herbst) | COLEOPTERA | Curculionidae | Sitophilus | linearis | (Herbst) | |
| tamarix leafhopper | Opsius stactogalus Fieber | HEMIPTERA | Cicadellidae | Opsius | stactogalus | Fieber | |
| tarnished plant bug | Lygus lineolaris (Palisot de Beauvois) | HEMIPTERA | Miridae | Lygus | lineolaris | (Palisot de Beauvois) | |
| tawny crazy ant | Nylanderia fulva (Mayr) | HYMENOPTERA | Formicidae | Nylanderia | fulva | Nylanderia fulva (Mayr) | |
| tawny garden slug | Lehmannia flavus (Linnaeus) | STYLOMMATOPHORA | Limacidae | Lehmannia | flavus | (Linnaeus) | |
| tawny mole cricket | Scapteriscus vicinus Scudder | ORTHOPTERA | Gryllotalpidae | Scapteriscus | vicinus | Scudder | |
| tea scale | Fiorinia theae Green | HEMIPTERA | Diaspididae | Fiorinia | theae | Green | |
| tenlined June beetle | Polyphylla decemlineata (Say) | COLEOPTERA | Scarabaeidae | Polyphylla | decemlineata | (Say) | |
| tenspotted lady beetle | Bothrocalvia pupillata (Swartz) | COLEOPTERA | Coccinellidae | Bothrocalvia | pupillata | (Swartz) | |
| terrapin scale | Mesolecanium nigrofasciatum (Pergande) | HEMIPTERA | Coccidae | Mesolecanium | nigrofasciatum | (Pergande) | |
| tessellated scale | Eucalymnatus tessellatus (Signoret) | HEMIPTERA | Coccidae | Eucalymnatus | tessellatus | (Signoret) | |
| Texas citrus mite | Eutetranychus banksi (McGregor) | ACARI | Tetranychidae | Eutetranychus | banksi | (McGregor) | |
| Texas leafcutting ant | Atta texana (Buckley) | HYMENOPTERA | Formicidae | Atta | texana | (Buckley) | |
| thief ant | Solenopsis molesta (Say) | HYMENOPTERA | Formicidae | Solenopsis | molesta | (Say) | |
| thirteenspotted lady beetle | Hippodamia tredecimpunctata tibialis (Say) | COLEOPTERA | Coccinellidae | Hippodamia | tredecimpunctata tibialis | (Say) | |
| thistle aphid | Brachycaudus cardui (Linnaeus) | HEMIPTERA | Aphididae | Brachycaudus | cardui | (Linnaeus) | |
| thread bug | Empicoris rubromaculatus (Blackburn) | HEMIPTERA | Reduviidae | Empicoris | rubromaculatus | (Blackburn) | |
| threebanded leafhopper | Erythroneura tricincta Fitch | HEMIPTERA | Cicadellidae | Erythroneura | tricincta | Fitch | |
| threecornered alfalfa hopper | Spissistilus festinus (Say) | HEMIPTERA | Membracidae | Spissistilus | festinus | (Say) | |
| threelined leafroller | Pandemis limitata (Robinson) | LEPIDOPTERA | Tortricidae | Pandemis | limitata | (Robinson) | |
| threelined potato beetle | Lema daturophila Kogan & Goeden | COLEOPTERA | Chrysomelidae | Lema | daturophila | Kogan & Goeden | |
| threespotted flea beetle | Disonycha triangularis (Say) | COLEOPTERA | Chrysomelidae | Disonycha | triangularis | (Say) | |
| threestriped blister beetle | Epicauta lemniscata (Fabricius) | COLEOPTERA | Meloidae | Epicauta | lemniscata | (Fabricius) | |
| threestriped lady beetle | Brumoides suturalis (Fabricius) | COLEOPTERA | Coccinellidae | Brumoides | suturalis | (Fabricius) | |
| throat bot fly | Gasterophilus nasalis (Linnaeus) | DIPTERA | Oestridae | Gasterophilus | nasalis | (Linnaeus) | |
| thurberia weevil | Anthonomus grandis thurberiae Pierce | COLEOPTERA | Curculionidae | Anthonomus | grandis thurberiae | Pierce | |
| tiger swallowtail | Papilio glaucus Linnaeus | LEPIDOPTERA | Papilionidae | Papilio | glaucus | Linnaeus | |
| tilehorned prionus | Prionus imbricornis (Linnaeus) | COLEOPTERA | Cerambycidae | Prionus | imbricornis | (Linnaeus) | |
| tipdwarf mite | Calepiterimerus thujae (Garman) | ACARI | Eriophyidae | Calepiterimerus | thujae | (Garman) | |
| toad bug | Gelastocoris oculatus (Fabricius) | HEMIPTERA | Gelastocoridae | Gelastocoris | oculatus | (Fabricius) | |
| tobacco aphid | Myzus persicae ssp. nicotianae Blackman | HEMIPTERA | Aphididae | Myzus | persicae ssp. nicotianae | Blackman | |
| tobacco budworm | Heliothis virescens (Fabricius) | LEPIDOPTERA | Noctuidae | Heliothis | virescens | (Fabricius) | |
| tobacco flea beetle | Epitrix hirtipennis (Melsheimer) | COLEOPTERA | Chrysomelidae | Epitrix | hirtipennis | (Melsheimer) | |
| tobacco hornworm | Manduca sexta (Linnaeus) | LEPIDOPTERA | Sphingidae | Manduca | sexta | (Linnaeus) | |
| tobacco moth | Ephestia elutella (Hübner) | LEPIDOPTERA | Pyralidae | Ephestia | elutella | (Hübner) | |
| tobacco stalk borer | Trichobaris mucorea (LeConte) | COLEOPTERA | Curculionidae | Trichobaris | mucorea | (LeConte) | |
| tobacco thrips | Frankliniella fusca (Hinds) | THYSANOPTERA | Thripidae | Frankliniella | fusca | (Hinds) | |
| tobacco wireworm | Conoderus vespertinus (Fabricius) | COLEOPTERA | Elateridae | Conoderus | vespertinus | (Fabricius) | |
| tomato bug | Engytatus modestus (Distant) | HEMIPTERA | Miridae | Engytatus | modestus | (Distant) | |
| tomato fruitworm* | Helicoverpa zea (Boddie) | LEPIDOPTERA | Noctuidae | Helicoverpa | zea | (Boddie) | *Also called bollworm and corn earworm |
| tomato hornworm | Manduca quinquemaculata (Haworth) | LEPIDOPTERA | Sphingidae | Manduca | quinquemaculata | (Haworth) | |
| tomato pinworm | Keiferia lycopersicella (Walsingham) | LEPIDOPTERA | Gelechiidae | Keiferia | lycopersicella | (Walsingham) | |
| tomato psyllid* | Bactericera cockerelli (Sulc) | HEMIPTERA | Triozidae | Bactericera | cockerelli | (Sulc) | *Also called potato psyllid |
| tomato russet mite | Aculops lycopersici (Massee) | ACARI | Eriophyidae | Aculops | lycopersici | (Massee) | |
| toothed flea beetle | Chaetocnema denticulata (Illiger) | COLEOPTERA | Chrysomelidae | Chaetocnema | denticulata | (Illiger) | |
| torsalo | Dermatobia hominis (Linnaeus, Jr.) | DIPTERA | Oestridae | Dermatobia | hominis | (Linnaeus, Jr.) | |
| transparentwinged plant bug | Hyalopeplus pellucidus (Stål) | HEMIPTERA | Miridae | Hyalopeplus | pellucidus | (Stål) | |
| transverse lady beetle | Coccinella transversoguttata richardsoni Brown | COLEOPTERA | Coccinellidae | Coccinella | transversoguttata richardsoni | Brown | |
| trefoil plant bug | Plagiognathus chrysanthemi (Wolff) | HEMIPTERA | Miridae | Plagiognathus | chrysanthemi | (Wolff) | |
| trefoil seed chalcid | Bruchophagus platypterus (Walker) | HYMENOPTERA | Eurytomidae | Bruchophagus | platypterus | (Walker) | |
| tricolored bumble bee | Bombus ternarius (Say) | HYMENOPTERA | Apidae | Bombus | ternarius | (Say) | |
| tropical bed bug | Cimex hemipterus (Fabricius) | HEMIPTERA | Cimicidae | Cimex | hemipterus | (Fabricius) | |
| tropical fire ant | Solenopsis geminata (Fabricius) | HYMENOPTERA | Formicidae | Solenopsis | geminata | (Fabricius) | |
| tropical fowl mite | Ornithonyssus bursa (Berlese) | ACARI | Macronyssidae | Ornithonyssus | bursa | (Berlese) | |
| tropical horse tick | Anocentor nitens (Neumann) | ACARI | Ixodidae | Anocentor | nitens | (Neumann) | |
| tropical rat louse | Hoplopleura pacifica Ewing | PHTHIRAPTERA | Hoplopleuridae | Hoplopleura | pacifica | Ewing | |
| tropical rat mite | Ornithonyssus bacoti (Hirst) | ACARI | Macronyssidae | Ornithonyssus | bacoti | (Hirst) | |
| tropical sod webworm | Herpetogramma phaeopteralis Guenée | LEPIDOPTERA | Crambidae | Herpetogramma | phaeopteralis | Guenée | |
| tropical soda apple leaf beetle | Gratiana boliviana Spaeth | COLEOPTERA | Chrysomelidae | Gratiana | boliviana | Spaeth | |
| tuber flea beetle | Epitrix tuberis Gentner | COLEOPTERA | Chrysomelidae | Epitrix | tuberis | Gentner | |
| tufted apple bud moth | Platynota idaeusalis (Walker) | LEPIDOPTERA | Tortricidae | Platynota | idaeusalis | (Walker) | |
| tule beetle | Tanystoma maculicolle (Dejean) | COLEOPTERA | Carabidae | Tanystoma | maculicolle | (Dejean) | |
| tulip bulb aphid | Dysaphis tulipae (Boyer de Fonscolombe) | HEMIPTERA | Aphididae | Dysaphis | tulipae | (Boyer de Fonscolombe) | |
| tuliptree aphid | Illinoia liriodendri (Monell) | HEMIPTERA | Aphididae | Illinoia | liriodendri | (Monell) | |
| tuliptree scale | Toumeyella liriodendri (Gmelin) | HEMIPTERA | Coccidae | Toumeyella | liriodendri | (Gmelin) | |
| tumid spider mite | Tetranychus tumidus Banks | ACARI | Tetranychidae | Tetranychus | tumidus | Banks | |
| tupelo leafminer | Antispila nysaefoliella Clemens | LEPIDOPTERA | Heliozelidae | Antispila | nysaefoliella | Clemens | |
| Turkestan cockroach | Blatta lateralis (Walker) | BLATTODEA | Blattidae | Blatta | lateralis | (Walker) | |
| turkey chigger | Neoschoengastia americana (Hirst) | ACARI | Trombiculidae | Neoschoengastia | americana | (Hirst) | |
| turkey gnat | Simulium meridionale Riley | DIPTERA | Simuliidae | Simulium | meridionale | Riley | |
| turnip aphid | Lipaphis pseudobrassicae (Davis) | HEMIPTERA | Aphididae | Lipaphis | pseudobrassicae | (Davis) | |
| turnip maggot | Delia floralis (Fallén) | DIPTERA | Anthomyiidae | Delia | floralis | (Fallén) | |
| turpentine borer | Buprestis apricans Herbst | COLEOPTERA | Buprestidae | Buprestis | apricans | Herbst | |
| twicestabbed lady beetle | Chilocorus stigma (Say) | COLEOPTERA | Coccinellidae | Chilocorus | stigma | (Say) | |
| twig girdler | Oncideres cingulata (Say) | COLEOPTERA | Cerambycidae | Oncideres | cingulata | (Say) | |
| twig pruner | Anelaphus villosus (Fabricius) | COLEOPTERA | Cerambycidae | Anelaphus | villosus | (Fabricius) | |
| twinspotted budworm | Hedya chionosema (Zeller) | LEPIDOPTERA | Tortricidae | Hedya | chionosema | (Zeller) | |
| twobanded fungus beetle | Alphitophagus bifasciatus (Say) | COLEOPTERA | Tenebrionidae | Alphitophagus | bifasciatus | (Say) | |
| twobanded Japanese weevil | Callirhopalus bifasciatus (Roelofs) | COLEOPTERA | Curculionidae | Callirhopalus | bifasciatus | (Roelofs) | |
| twolined chestnut borer | Agrilus bilineatus (Weber) | COLEOPTERA | Buprestidae | Agrilus | bilineatus | (Weber) | |
| twolined spittlebug | Prosapia bicincta (Say) | HEMIPTERA | Cercopidae | Prosapia | bicincta | (Say) | |
| twomarked treehopper | Enchenopa binotata (Say) | HEMIPTERA | Membracidae | Enchenopa | binotata | (Say) |