| tabulata Grote, Egira, [Xylomiges] | 932799 | |
9724 | tacna Barnes, Ogdoconta, [Caradrina] | 932022 | |
10303 | tacoma Strecker, Trichordestra, [Mamestra] | 932885 | |
| tactus Grote, Metalectra, [Homopyralis] | 930680 | |
| Tadana Walker | 930089 | |
| taedata Grote, Mesogona, [Pseudoglaea] | 932610 | |
| Taeniocampa Guenée | 932761 | |
| tagusalis Walker, Lascoria, [Herminia] | 930550 | |
9339.2 | tahoeensis Mikkola & Lafontaine, Apamea | 932328 | |
10339.4 | taigata Lafontaine, Lasionycta | 932969 | |
9661 | talidiformis Guenée, Crambodes | 932030 | |
| Tamila Guenée | 932061 | |
| Tamseale Nye | 931117 | |
| tamsi Benjamin, Polia– ssp., [Anarta] | 932871 | |
| tana Strand, Autographa | 931192 | |
| Tanada Walker | 930400 | |
| tanena Strecker, Schinia– ssp. | 932119 | |
8502 | tantillus Grote, Metalectra, [Homopyralis] | 930682 | |
| tantiva Smith, Egira– ssp., [Xylomiges] | 932794 | |
| Tantura Kirby | 931253 | |
9188.1 | tapa Anweiler & Schmidt, Charadra | 931405 | |
9592 | tapeta Smith, Properigea, [Hadena] | 932723 | |
| Tarache Hübner | 931339 | |
| Tarachidia Hampson | 931305 | |
8128.3 | tarandus Schmidt & Macaulay, Dodia | 930338 | |
| tarasca Schaus, Spragueia | 931392 | |
9918 | tarda Barnes & Benjamin, Lithophane, [Graptolitha] | 932570 | |
9650 | tarda Guenée, Athetis, [Caradrina] | 932269 | |
| Targallodes Holland | 931117 | |
10082.1 | tartarea Troubridge & Crabo, Sympistis, [Oncocnemis] | 931837 | |
| tartarea Smith, Acronicta, [Acronycta] | 931433 | |
9965 | tatago Lafontaine & Mikkola, Xanthia | 932622 | |
| Tathorhynchus Hampson | 930753 | |
| Tathorhyncus Bethune-Baker, misspelled | 930753 | |
| taunensis Fuchs, Papestra, [Mamestra] | 932893 | |
10857 | taura Smith, Euxoa | 933482 | |
| Taxila Walker | 930356 | |
| taylori Rothschild, Anarta, [Cardepia] | 932826 | |
| Tearosoma Felder | 930170 | |
| tecatensis Buckett, Abagrotis | 933679 | |
9646 | tecnion Dyar, Micrathetis | 932033 | |
10936 | tecta Hübner, Xestia, [Noctua] | 933602 | |
| tecta Grote, Amyna, [Chytoryza] | 931253 | |
| tecta Hübner, Xestia– ssp., [Noctua] | 933602 | |
| tecta Walker, Orthodes, [Orthosia] | 933138 | |
| tectoides Corti, Xestia– ssp., [Agrotis] | 933602 | |
| tegularis Strand, Euxoa, ab. | 933309 | |
| tegularis Draudt, Euxoa, ab. | 933309 | |
| Teia Walker | 930159 | |
8640 | tejonica Behr, Drasteria, [Syneda] | 930914 | |
| tela Strand, Catocala | 930833 | |
9810 | tela Smith, Ruacodes, [Hadena] | 931596 | |
10843 | teleboa Smith, Euxoa, [Carneades] | 933447 | |
| telifer Grote, Schizura, [Coelodasys] | 930098 | |
| telifera Harris, Agrotis | 933528 | |
10393 | teligera Morrison, Lacinipolia, [Mamestra] | 933039 | |
8726.1 | telma Sullivan, Gondysia, [Neadysgonia] | 930960 | |
| Telmia Hübner | 933306 | |
| teltowa Smith, Sutyna– ssp., [Anytus] | 932707 | |
| telum Guenée, Acronicta, [Acronycta] | 931445 | |
9691 | temecula Barnes, Condica, [Platysenta] | 931990 | |
| temperata Walker, Gonodonta | 930619 | |
9623 | templada Schaus, Cropia, [Eudipna] | 931644 | |
9730 | templetonae Clarke, Azenia | 931729 | |
| tenaculum Guenée, Rachiplusia, [Plusia] | 931176 | |
| tenalis Smith, Hemeroplanis, [Pleonectyptera] | 930705 | |
| tenebricosa Möschler, Sympistis, [Anarta] | 931929 | |
| tenebricosa Schawerda, Peridroma, [Agrotis] | 933211 | |
10994 | tenebrifera Walker, Cerastis, [Hadena] | 933536 | |
| tenella Edwards, Drasteria, [Melipotis] | 930900 | |
9988 | tenera Smith, Mniotype, [Hadena] | 932706 | |
8230 | tenera Hübner, Cycnia | 930404 | |
8229.1 | tenerosa Dyar, Cycnia, [Ammalo] | 930403 | |
| tenisca Smith, Lacinipolia– ssp., [Mamestra] | 933045 | |
| tenuescens Grote, Schinia, [Lygranthoecia] | 932178 | |
| tenuescens Smith, Ponometia, [Acontia] | 931312 | |
10909 | tenuescens Smith, Anicla, [Peridroma] | 933218 | |
10951 | tenuicula Morrison, Pseudohermonassa, [Agrotis] | 933630 | |
9135 | tenuicula Morrison, Tarache | 931341 | |
| tenuicula of authors, Ponometia, not Morrison, 1875 | 931322 | |
10080 | tenuifascia Smith, Sympistis, [Oncocnemis] | 931807 | |
| tenuifascia Harvey, Cisthene– ssp. | 930183 | |
8066 | tenuifascia Harvey, Cisthene | 930183 | |
| tenuilinea Smith, Sutyna, [Anytus] | 932707 | |
10498 | tenuimacula Barnes & McDunnough, Orthosia, [Monima] | 932781 | |
| tenuimargo Holland, Lycomorpha | 930199 | |
| tenuimargo Barnes & McDunnough, Schinia– ssp., [Incita] | 932072 | |
8493 | tenuis Grote, Isogona, [Coleophora] | 930734 | |
8768 | tenuistriga Barnes & McDunnough, Doryodes | 930928 | |
| tenuistriga McDunnough, Sympistis, [Homohadena] | 931821 | |
8292 | tephra Hübner, Dasychira | 930144 | |
9919 | tephrina Franclemont, Lithophane | 932554 | |
9909 | tepida Grote, Lithophane | 932553 | |
| tepida Grote, Lithophane– ssp. | 932553 | |
| teplia Smith, Euxoa | 933462 | |
9755 | tepperi Morrison, Plagiomimicus, [Schinia] | 931659 | |
10910 | tepperi Smith, Anicla, [Agrotis] | 933223 | |
9284 | teratophora Herrich-Schäffer, Anterastria, [Bryophila] | 932207 | |
9562.1 | terens Walker, Acroria, [Hadena] | 932278 | |
| teretimacula Guenée, Gonodonta | 930619 | |
| termessus Smith, Euxoa, [Carneades] | 933464 | |
8712 | termina Grote, Zale, [Phaeocyma] | 931047 | |
| terminalis Smith, Toxonprucha– ssp., [Yrias] | 930998 | |
| terminalis Neumögen & Dyar, Utetheisa | 930348 | |
10085 | terminalis Smith, Sympistis, [Oncocnemis] | 931794 | |
| terminalis Strand, Papaipema | 932465 | |
8244 | terminalis Walker, Pygoctenucha, [Apistosia] | 930418 | |
10484 | terminata Smith, Orthosia, [Taeniocampa] | 932768 | |
| terminatissima Dyar, Hypotrix, [Taeniocampa] | 933172 | |
10037 | terminellus Grote, Catabenoides, [Adipsophanes] | 931768 | |
9145 | terminimaculata Grote, Tarache | 931351 | |
| ternaria Smith, Euxoa, gender-conform | 933405 | |
| ternarius Smith, Euxoa, [Carneades] | 933405 | |
10432 | terrapictalis Buckett, Dargida, [Faronta] | 932929 | |
10733 | terrealis Grote, Euxoa, [Agrotis] | 933311 | |
8332 | terrebralis Barnes & McDunnough, Idia, [Epizeuxis] | 930480 | |
| terrena Smith, Euxoa, gender-conform | 933365 | |
10742 | terrenus Smith, Euxoa, [Carneades] | 933365 | |
| terrifica Barnes & McDunnough, Schinia | 932145 | |
| terrifica Smith, Protogygia, [Setagrotis] | 933297 | |
9775 | territans Edwards, Chalcopasta, [Basilodes] | 931695 | |
| territorialis Smith, Euxoa, [Carneades] | 933319 | |
| terrosa Guenée, Zale, [Homoptera] | 931021 | |
10464 | tertia Dyar, Perigonica | 932750 | |
11179 | tertia Grote, Schinia, [Tamila] | 932158 | |
| tertialis Smith, Nephelodes– ssp. | 932810 | |
| Tesagrotis Lafontaine | 933635 | |
| tesselaroides Strand, Halysidota, [Halesidota] | 930360 | |
| tessella Packard, Macrurocampa, [Lochmaeus] | 930067 | |
8203 | tessellaris Smith, Halysidota, [Phalaena] | 930360 | |
| tessellaris Harris, Halysidota | 930361 | |
10805 | tessellata Harris, Euxoa, [Agrotis] | 933395 | |
| tessellata Guérin-Méneville, Halysidota, misspelled | 930360 | |
| tesselloides Grote, Euxoa, [Agrotis] | 933395 | |
9080 | testa Barnes & McDunnough, Proroblemma | 930697 | |
| testula Smith, Euxoa, [Carneades] | 933464 | |
| Tetanolita Grote | 930515 | |
10433 | tetera Smith, Dargida, [Leucania] | 932930 | |
| tetra of authors, Amphipyra, not Fabricius, 1787 | 931545 | |
| tetra Walker, Euxoa, [Lepipolys] | 933343 | |
| tetragona Walker, Panula, [Athyrma] | 930883 | |
| tetragona Haworth, Xestia, [Noctua] | 933571 | |
9143 | tetragona Walker, Tarache, [Acontia] | 931354 | |
| tetrica Edwards, Melipotis, [Cirrhobolina] | 930878 | |
| tetrica Smith, Euxoa, [Agrotis] | 933384 | |
10147 | tetrops Dyar, Sympistis, [Oncocnemis] | 931811 | |
| teuthras Walker, Cosmosoma– ssp., [Glaucopis], extralimital | 930457 | |
8279 | teuthras Walker, Cosmosoma, [Glaucopis] | 930457 | |
| texana Rothschild, Lophocampa– ssp., [Halisidota] | 930373 | |
| texana Morrison, Leucania, [Heliophila] | 932937 | |
8550 | texana Riley, Anomis | 930607 | |
| texana Grote, Horama, gender-conform | 930465 | |
| texana Smith, Protorthodes– ssp., [Perigea] | 933116 | |
10560 | texana Smith, Protorthodes, [Perigea] | 933116 | |
8730 | texana Hampson, Focillidia | 930967 | |
8494 | texana Smith, Isogona, [Parora] | 930735 | |
| texana French, Pagara, [Ameria] | 930396 | |
| texana Barnes & McDunnough, Aleptina | 931633 | |
8745 | texana Morrison, Mocis, [Remigia] | 930944 | |
8830 | texanae French, Catocala | 930810 | |
| texanus Grote, Horama– ssp., [Callicarus] | 930465 | |
| texarkana Brower, Catocala– ssp. | 930849 | |
| texensis Draudt, Cisthene, [Illice] | 930192 | |
| textor Harris, Hyphantria | 930319 | |
| Thalesa Schaus | 930364 | |
| thalictri Lyman, Papaipema, [Gortyna] | 932465 | |
| thanatologia Dyar, Euxoa– ssp., [Porosagrotis] | 933308 | |
8219 | thaumasta Franclemont, Apocrisias | 930379 | |
9928 | thaxteri Grote, Lithophane | 932547 | |
10020 | thaxterianus Grote, Psaphida, [Dicopis] | 931549 | |
| Thebrone Boisduval | 930356 | |
| thecata Morrison, Anhimella, [Mamestra] | 933086 | |
| Thelidora Möschler | 931156 | |
| Themaca Walker | 930170 | |
| Themma Walker | 930924 | |
9233 | theodora of authors, Acronicta, not Schaus, 1894 | 931450 | |
| theodori Grote, Andropolia– ssp., [Apatela] | 932685 | |
9571 | theodori Grote, Andropolia, [Apatela] | 932685 | |
8341 | theralis Walker, Zanclognatha, [Herminia] | 930490 | |
| theralis of authors, Zanclognatha, not Walker, 1859 | 930491 | |
| Therasea Grote | 931339 | |
| Thermesia Hübner | 930754 | |
| Thermesiini Guenée | 930754 | |
| thermisioides Walker, Ephyrodes, [Maltana] | 931083 | |
| Theroa Schaus | 930092 | |
8390 | theroalis Walker, Aristaria, [Bleptina] | 930542 | |
| thetis of authors, Dysschema, not Klug, 1836 | 930358 | |
| Thioptera Franclemont | 931282 | |
| thisbesalis Walker, Bleptina | 930520 | |
| Tholera Hübner | 932808 | |
| Tholerini Beck | 932807 | |
| Tholomiges Lederer | 930660 | |
| thona Strecker, Ectypia, [Spilosoma] | 930422 | |
9230 | thoracica Grote, Acronicta, [Apatela] | 931446 | |
9875 | thoracica Putnam-Cramer, Xylena, [Calocampa] | 932521 | |
9774 | thoracica Edwards, Chrysoecia, [Eulithosia] | 931675 | |
11141 | thoreaui Grote & Robinson, Schinia, [Anthoecia] | 932093 | |
| thraxalis Walker, Renia, [Herminia] | 930532 | |
9899.1 | thujae Webster & Thomas, Lithophane | 932571 | |
10969.2 | thula Lafontaine & Kononenko, Xestia | 933610 | |
9997 | thula Strecker, Brachylomia, [Hadena] | 932662 | |
| thulea Dalman, Acerbia, [Arctia] | 930284 | |
| Thurberiphaga Dyar | 931763 | |
7958 | thyatiroides Walker, Dasylophia, [Heterocampa] | 930134 | |
9716 | thyatiroides Barnes & Benjamin, Stibaera, [Perigea] | 932017 | |
8905 | thyatyroides Guenée, Eosphoropteryx, [Plusia] | 931187 | |
| Thylacigyna Rambur | 930159 | |
| Thyreion Smith | 932061 | |
| Thysania Dalman | 930757 | |
| Tiauspa Walker | 930627 | |
| tibetana Moore, Pyrrhia | 932040 | |
| tibetica Corti & Draudt, Eurois | 933560 | |
| tibialis Butler, Horama, [Mastigocera] | 930465 | |
| tigrina Strecker, Ctenucha | 930433 | |
9067 | tigris Guenée, Diastema | 932028 | |
| Tiliacea Tutt | 932621 | |
| tilosalis Smith, Renia | 930530 | |
| Tima Walker, preoccupied | 931373 | |
| timais of authors, Xanthopastis, not Cramer, [1780] | 933210 | |
| timandra Edwards, Catocala | 930857 | |
10877 | timbor Dyar, Dichagyris, [Agrotis] | 933238 | |
| Timora of authors, not Walker, 1856 | 932045 | |
8884 | tinctoides Guenée, Mouralia, [Abrostola] | 931165 | |
| tinkhami McDunnough, Sympistis, [Oncocnemis] | 931933 | |
9426 | titan Todd, Meropleon | 932412 | |
| titania Dodge, Catocala | 930848 | |
| titubatis Smith, Euxoa, [Carneades] | 933360 | |
11152 | tobia Smith, Schinia | 932089 | |
| tobolskensis Sheljuzhko, Graphiphora, [Rhyacia] | 933563 | |
10745 | tocoyae Smith, Euxoa, [Carneades] | 933370 | |
9159.3 | toddi Ferris & Lafontaine, Tarache, [Acontia] | 931357 | |
10153 | toddi Blanchard, Sympistis, [Oncocnemis] | 931961 | |
| togata Walker, Pseudorthodes, [Apamea] | 933128 | |
| togata of authors, Xanthia, not Esper, 1788 | 932622 | |
8734 | togataria Walker, Caenurgia, [Anaitis] | 930939 | |
| tonitra Smith, Acronicta, [Acronycta] | 931425 | |
9413 | tonsa Grote, Neoligia, [Hadena] | 932397 | |
| tooele Barnes & McDunnough, Grammia– ssp., [Apantesis] | 930264 | |
11076 | toralis Grote, Heliocheilus, [Botis] | 932060 | |
| toreuta Grote, Hypena | 930564 | |
| Tornacontia Smith | 931305 | |
9809 | torniplaga Barnes & McDunnough, Euamiana, [Nocloa] | 931595 | |
9541.1 | torreyana Mustelin, Aseptis | 932646 | |
9911 | torrida Smith, Lithophane, [Xylina] | 932578 | |
| torrida Walker, Antiblemma, [Thermesia] | 931093 | |
| tortilis Grote, Fishia, [Hadena] | 932693 | |
9101 | tortricina Zeller, Ponometia, [Agrophila] | 931326 | |
| Tortricodes Guenée, preoccupied | 930546 | |
7918 | tortuosa Tepper, Hyperaeschra, [Drynobia] | 930011 | |
| tortuosa Walker, Anomis, [Ristra] | 930608 | |
7928 | torva Hübner, Notodonta, [Bombyx] | 930017 | |
| torva Hübner, Notodonta– ssp., [Bombyx] | 930017 | |
9210 | tota Grote, Acronicta, [Apatela] | 931431 | |
| Toxocampa Guenée | 930752 | |
| Toxocampinae Guenée | 930752 | |
| Toxonprucha Möschler | 930995 | |
| trabea Smith, Polychrysia, [Deva] | 931182 | |
| trabilis Grote, Aplectoides, [Agrotis] | 933567 | |
| Trachaea Schaus, misspelled | 932279 | |
| Trachea Ochsenheimer | 932279 | |
| tracta Grote, Elaphria, [Hadena] | 932230 | |
9639 | tragopoginis Clerck, Amphipyra, [Phalaena] | 931545 | |
| tragopogonis of authors, Amphipyra, misspelled | 931545 | |
| Trama Harvey, preoccupied | 930969 | |
9816 | tranquilla Grote, Zotheca | 932673 | |
| transbaikalensis Staudinger, Syngrapha, [Plusia] | 931216 | |
| transfrons Neumögen, Oligia, [Hadena] | 932383 | |
| translucida Walker, Pseudohemihyalea, [Halesidota] | 930381 | |
| transmontana Neumögen & Dyar, Arctia, [Hypercompa] | 930290 | |
| transmutata Walker, Spragueia, [Agrophila] | 931382 | |
10479 | transparens Grote, Orthosia, [Perigrapha] | 932764 | |
| transversata Smith, Acronicta, [Acronycta] | 931425 | |
| transversta Walker, Ellida, [Edema] | 930051 | |
| treati Grote, Pseudohermonassa, [Agrotis] | 933630 | |
| treatii Grote, Virbia, [Crocota] | 930294 | |
9949 | tremula Harvey, Chaetaglaea, [Glaea] | 932606 | |
| Triaena Hübner | 931419 | |
10521.1 | triangula Sullivan & Adams, Morrisonia | 932804 | |
8742 | triangula Barnes & McDunnough, Callistege, [Caenurgia] | 930920 | |
| triangularis Smith, Haploa | 930346 | |
9766 | triangulifer Grote, Cirrhophanus | 931681 | |
| triangulum of authors, Xestia, not Hufnagel, 1766 | 933573 | |
| Tribunophora Hübner | 931503 | |
| Trichagrotis McDunnough | 933169 | |
| Trichclea Smith, misspelled | 932822 | |
| Trichiosoma Lucas | 930159 | |
| Trichocala Dyar | 931698 | |
| Trichocerapoda Benjamin | 933079 | |
| Trichoclea Grote, part | 932822 | |
| Trichoclea Grote, part | 932899 | |
| Trichocosmia Grote | 932818 | |
| Trichofeltia Barnes & McDunnough | 933185 | |
| Trichofeltia McDunnough, preoccupied | 933185 | |
| Tricholita Grote | 933191 | |
| Tricholonche Grote | 931419 | |
| trichoma of authors, Speocropia, not Herrich-Schäffer, 1868 | 932211 | |
| Trichoplexia Hampson | 932293 | |
| Trichoplusia McDunnough | 931167 | |
| Trichopolia Grote | 933183 | |
| Trichordestra McCabe | 932883 | |
| Trichorthosia Grote | 933169 | |
| Trichosellus Grote | 932061 | |
| Trichosilia Hampson | 933487 | |
| trichostrota Meyrick, Spragueia, [Mnesipyrga] | 931391 | |
| Trichotarache Grote | 931373 | |
| Trichotis Felder | 930068 | |
9625 | trichroma Herrich-Schäffer, Speocropia, [Hadena] | 932211 | |
| Trichromia Hübner | 930391 | |
| tricolor Stretch, Kodiosoma | 930432 | |
9064 | tricolor Smith, Cerathosia | 931301 | |
| tricolor Fitch, Hypoprepia– ssp., [Atolmis] | 930205 | |
11222 | tricolor Barnes, Grotella | 931709 | |
| Tricopis Grote | 932061 | |
10417 | tricornuta McDunnough, Lacinipolia | 933070 | |
10675 | tricosa Lintner, Feltia, [Agrotis] | 933502 | |
| tricuspis Esper, Cerapteryx, [Bombyx] | 932808 | |
| Tridepia McDunnough | 932861 | |
| trientiplaga Walker, Elaphria, [Laphygma] | 932227 | |
| trifariana Walker, Spragueia, [Agrophila] | 931382 | |
10597 | trifascia Smith, Hypotrix, [Taeniocampa] | 933179 | |
11149 | trifascia Hübner, Schinia | 932096 | |
10717 | trifasciata Smith, Euxoa, [Agrotis] | 933335 | |
| trifolii Hufnagel, Anarta– ssp., [Phalaena] | 932826 | |
10223 | trifolii Hufnagel, Anarta, [Phalaena] | 932826 | |
11018 | trigona Smith, Abagrotis, [Rhynchagrotis] | 933653 | |
8258 | trigona Grote, Bertholdia, [Halesidota] | 930390 | |
9386 | trigona Smith, Resapamea, [Luperina] | 932368 | |
| trigridula Herrich-Schäffer, Spragueia, [Emmelia] | 931384 | |
| Trilenca Neave, misspelled | 932061 | |
| Trileuca Grote | 932061 | |
| trilinea Walker, Bagisara, [Laphygma] | 931240 | |
| trilineata Packard, Gluphisia | 930019 | |
8477.1 | trilineosa Dyar, Hemeroplanis, [Pleonectyptera] | 930712 | |
8142 | trimaculata Smith, Euerythra | 930399 | |
| trimaculata Boisduval, Alypiodes, [Alypia] | 931977 | |
| trimaculata Strand, Euproctis, [Porthesia] | 930172 | |
| trimaculosa Reakirt, Virbia, [Crocota] | 930306 | |
| trinotata Walker, Nola, [Lebena] | 931132 | |
| Triocnemidina Poole | 931607 | |
| Triocnemis Grote | 931608 | |
| triolata Smith, Schinia, [Melicleptria] | 932107 | |
| triorthia Dyar, Papaipema, [Gortyna] | 932489 | |
| tripars Walker, Eucoptocnemis, [Mythimna] | 933257 | |
| tripartita Walker, Dasylophia, [Heterocampa] | 930134 | |
9118 | tripartita Smith, Ponometia, [Tornacontia] | 931338 | |
10667 | triphaenoides Dyar, Dichagyris, [Lycophotia] | 933244 | |
8405 | tripla Grote, Oxycilla | 930595 | |
9544 | triplaga Walker, Euplexia, [Dianthoecia] | 932289 | |
9753 | triplagiatus Smith, Plagiomimicus | 931662 | |
10403.1 | triplehorni Selman & Leuschner, Lacinipolia | 933051 | |
9644 | triplex Walker, Micrathetis, [Laphygma] | 932031 | |
| Tripudia Grote | 931256 | |
9045 | tripuncta Möschler, Marimatha, [Xanthoptera] | 931287 | |
9734 | tripuncta Barnes & McDunnough, Lythrodes | 931602 | |
9651 | triquetra Grote, Anorthodes, [Pyrophila] | 932270 | |
8992 | triquetrana Fitch, Nola, [Brachytaenia] | 931132 | |
| trisignata Forbes & Franclemont, Eupsilia, misspelled | 932590 | |
9286 | trisignata Walker, Harrisimemna, [Grammophora] | 931498 | |
| Trissophaes Hübner | 930623 | |
9176 | tristicta Hampson, Bagisara, [Caradrina] | 931250 | |
10723 | tristicula Morrison, Euxoa, [Agrotis] | 933342 | |
9935 | tristigmata Grote, Eupsilia, [Scopelosoma] | 932590 | |
| tristis Hübner, Anarta | 932823 | |
| tristis Barnes & McDunnough, Abagrotis | 933652 | |
10617 | tristis Barnes & McDunnough, Anhypotrix, [Polia] | 933183 | |
| tristis Edwards, Catocala | 930835 | |
9247 | tristis Smith, Acronicta, [Acronycta] | 931469 | |
| tristis Crabo, Cycnia– ssp. | 930405 | |
9663 | tristrigella Walker, Balsa, [Gargaza] | 931418 | |
| Tristyla Smith | 931731 | |
9211 | tritona Hübner, Acronicta, [Triaena] | 931432 | |
| trituberalis Zeller, Hypena | 930580 | |
| Trocodima Watson | 930396 | |
| tronella Smith, Euxoa, gender-conform | 933446 | |
10842 | tronellus Smith, Euxoa, [Carneades] | 933446 | |
8722 | tropicalis Guenée, Ophisma | 930968 | |
| troubridgei Lafontaine, Xestia– ssp. | 933590 | |
10698.2 | troubridgei Lafontaine, Feltia | 933491 | |
| trouvelotii Packard, Heterocampa | 930075 | |
| Trudestra McDunnough | 932845 | |
| trumani Smith, Xestia, [Noctua] | 933571 | |
8027 | truncata Herrich-Schäffer, Lirimiris, [Notodonta] | 930140 | |
| truncatula Zeller, Spragueia, [Agrophila] | 931391 | |
| truva Smith, Euxoa | 933354 | |
| Trypana Guenée | 932061 | |
| tseki Koutsaftikis, Mythimna, [Leucania] | 932935 | |
| tsushimensis Inoue, Lymantria | 930141 | |
10285 | tuana Smith, Hexorthodes, [Mamestra] | 933159 | |
11116 | tuberculum Hübner, Schinia, [Melicleptria] | 932112 | |
| Tuerta of authors, not Walker, 1869 | 931969 | |
| tufa Smith, Polia, [Mamestra] | 932873 | |
| tullia Perty, Goniapteryx | 930633 | |
9617 | tumida Grote, Pseudanthoecia, [Lygranthoecia] | 932748 | |
| tumidicosta Hampson, Motya, [Stictoptera] | 931155 | |
| tundrana Bang-Haas, Xestia, [Agrotis] | 933590 | |
| Tunza Walker | 930924 | |
9634 | tura Druce, Phuphena, [Dianthoecia] | 932212 | |
| turbans Christoph, Holarctia, [Arctia] | 930239 | |
| turbata Walker, Melipotis, [Bolina] | 930872 | |
11073 | turbata Walker, Heliocheilus, [Poaphila] | 932057 | |
| turbatus Walker, Heliocheilus, gender-conform | 932057 | |
| turbida Hübner, Leucania | 932948 | |
| turbida Walker, Lochmaeus, [Heterocampa] | 930091 | |
| turbida Walker, Macrurocampa, [Cerura] | 930067 | |
| Turbula Walker | 931764 | |
11030 | turbulenta McDunnough, Abagrotis | 933668 | |
9618 | turbulenta Hübner, Phosphila | 932208 | |
| turcomana Staudinger, Amphipyra | 931545 | |
| turfosalis of authors, Hypenodes, not Wocke, 1850 | 930662 | |
| turpis Smith, Acronicta, [Acronycta] | 931426 | |
| turpis Guenée, Condica, [Perigea] | 931998 | |
| turris Grote, Euxoa, [Agrotis] | 933424 | |
| turtur Felder & Rogenhofer, Massala, [Capnodes] | 931088 | |
| Turuptiana Walker | 930320 | |
9405 | tusa Grote, Oligia, [Hadena] | 932379 | |
9283 | tybo Barnes, Agriopodes, [Moma] | 931496 | |
10591 | typhedana Franclemont, Synorthodes | 933148 | |
11049 | typica Smith, Pronoctua | 933689 | |
8543.2 | tyrannus Guenée, Eudocima, [Ophideres] | 930626 | |
| tyria Slosson, Hyparpax | 930119 | |
| Tyria Hübner | 930346 | |
| Tyrissa Walker | 930968 | |
| Tyta Billberg | 931502 | |