| b-ata Goeze, Grammia, [Bombyx] | 930242 | |
| babayaga Strecker, Catocala | 930808 | |
10134.1 | babi Troubridge, Sympistis | 931923 | |
| baboquavaria Smith, Oxycnemis | 931611 | |
10024 | baboquivariensis Barnes & Benjamin, Supralathosea | 931572 | |
| baceri Hampson, Sympistis, [Oncocnemis], misspelled | 931790 | |
| badia Edwards, Orgyia– ssp. | 930160 | |
8006 | badia Packard, Schizura, [Oedemasia] | 930099 | |
8777 | badia Grote & Robinson, Catocala | 930767 | |
| badia Grote & Robinson, Catocala– ssp. | 930767 | |
10968 | badicollis Grote, Xestia, [Ammoconia] | 933584 | |
10955 | badinodis Grote, Agnorisma, [Agrotis] | 933626 | |
10059 | badistriga Grote, Sympistis, [Hadena] | 931821 | |
| Bagisara Walker | 931239 | |
| Bagisarinae Crumb | 931239 | |
8557 | bahamensis Hampson, Litoprosopus | 931098 | |
9689.3 | bahamica Hampson, Perigea | 931988 | |
| Baileya Grote | 931147 | |
| baileyana Grote, Xestia, [Agrotis] | 933606 | |
9902 | baileyi Grote, Lithophane | 932549 | |
| bairdii Smith, Anicla, [Noctua] | 933221 | |
10765.1 | baja Lafontaine, Euxoa | 933394 | |
8528.1 | baja McCabe, Hypsoropha | 930630 | |
| bajoides Barnes & Benjamin, Xestia | 933577 | |
10115 | bakeri Dyar, Sympistis, [Oncocnemis] | 931790 | |
10923 | balanitis Grote, Actebia, [Agrotis] | 933230 | |
| balba Grote, Schinia, [Lygranthoecia] | 932154 | |
| Balia Doubleday | 930068 | |
| baliola Morrison, Iodopepla, [Orthosia] | 932287 | |
8897 | balluca Geyer, Diachrysia, [Dyachrysia] | 931179 | |
10082.2 | baloghi Troubridge, Sympistis | 931838 | |
| Balsa Walker | 931416 | |
| Balsinae Grote | 931416 | |
10091 | balteata Smith, Sympistis, [Oncocnemis] | 931804 | |
9005 | balteata Smith, Tripudia | 931264 | |
8442 | baltimoralis Guenée, Hypena | 930562 | |
| Bandelia Lindsey | 930739 | |
| Baniana Walker | 930750 | |
| Baptarma Smith | 932036 | |
9485 | baptisiae Bird, Papaipema, [Hydroecia] | 932494 | |
| baptisiae of authors, Papaipema, not Bird, 1902 | 932493 | |
10629 | baranca Barnes, Tricholita | 933195 | |
| Baratha Walker | 930941 | |
| Barathra Hübner | 932897 | |
| barbara Warren, Plusia, [Phytometra] | 931236 | |
| barbara Barnes & McDunnough, Sympistis, [Leucocnemis] | 931787 | |
| barbara Cassino, Catocala | 930801 | |
| barda Edwards, Grammia, [Arctia] | 930271 | |
| Barhona Moore | 930140 | |
| barnesi Franclemont & Todd, Catocala, misspelled | 930785 | |
| barnesi Benjamin, Abagrotis, [Lampra] | 933676 | |
8074 | barnesii Dyar, Cisthene, [Illice] | 930191 | |
| barnesii Smith, Apamea, [Hadena] | 932326 | |
10121 | barnesii Smith, Sympistis, [Oncocnemis] | 931907 | |
| barnesii French, Catocala | 930785 | |
9267 | barnesii Smith, Acronicta, [Acronycta] | 931481 | |
| barometricus Goossens, Ufeus, [Asterocampus] | 932709 | |
| Barrovia Barnes & McDunnough | 933570 | |
| bartholemica Wallengren, Anicla, [Graphiphora] | 933212 | |
| baryspus Dyar, Heterocampa, [Disphragis] | 930074 | |
10798 | basalis Grote, Euxoa, [Agrotis] | 933431 | |
| basalis Grote, Catocala | 930768 | |
8956 | basalis Walker, Marathyssa | 931104 | |
| basibrunnea Warren, Garella | 931141 | |
| basicinerea Grote, Cobubatha, [Tripudia] | 931275 | |
8296 | basiflava Packard, Dasychira, [Parorgyia] | 930148 | |
| basiflava Smith, Euxoa– ssp., [Agrotis] | 933359 | |
| basiflava Smith, Charadra | 931405 | |
10089 | basifugens Dyar, Sympistis, [Pseudacontia] | 931933 | |
8886 | basigera Walker, Enigmogramma, [Plusia] | 931167 | |
| basijuncta Barnes & McDunnough, Cisthene, [Illice] | 930179 | |
| basilinea [Denis & Schiffermüller], Apamea, [Noctua] | 932314 | |
| Basilodes Guenée | 931675 | |
9790 | basiochrea Barnes & McDunnough, Chamaeclea | 931760 | |
8406 | basipallida Barnes & McDunnough, Oxycilla | 930596 | |
10396 | basiplaga Smith, Lacinipolia, [Mamestra] | 933043 | |
10207 | basipuncta Barnes & McDunnough, Cucullia, [Copicucullia] | 931531 | |
8434 | basipunctaria Walker, Sigela, [Acidalia] | 930659 | |
| basirufa Strand, Lacinipolia | 933018 | |
10620.2 | basistriga Lafontaine, Ferris & Walsh, Hypotrix | 933176 | |
9439 | basistriga McDunnough, Hypocoena, [Calamia] | 932428 | |
7919 | basitriens Walker, Peridea, [Notodonta] | 930048 | |
9603 | basivirida Barnes & McDunnough, Pseudanarta, [Polia] | 932734 | |
| bathyerga Boie, Rhizedra, [Noctua] | 932437 | |
10503 | baueri Buckett, Egira, [Xylomiges] | 932786 | |
11028 | baueri McDunnough, Abagrotis | 933677 | |
| baueri McElvare, Schinia | 932094 | |
| baueri Staudinger, Galgula, [Thalpochares] | 932249 | |
9856 | baueri Rindge & Smith, Annaphila | 931741 | |
10406.2 | baueri Selman & Leuschner, Lacinipolia | 933055 | |
| bavia Felder & Rogenhofer, Amyna, [Erastria] | 931253 | |
| Bayleta Lucas, misspelled | 931147 | |
9234 | beameri Todd, Acronicta | 931451 | |
| beaniana Grote, Catocala | 930807 | |
10306 | beanii Grote, Trichordestra, [Mamestra] | 932888 | |
8160 | beanii Neumögen, Neoarctia, [Antarctia] | 930235 | |
10904 | beata Grote, Anicla, [Agrotis] | 933225 | |
| beddeci Hampson, Xestia, [Aplectoides] | 933606 | |
| beddeki Hampson, Xestia, emendation | 933606 | |
9508 | beeriana Bird, Papaipema | 932508 | |
| befana Skinner, Phoenicoprocta, [Syntomeida] | 930468 | |
9709 | begallo Barnes, Condica, [Catabena] | 932010 | |
10155 | behrensi Grote, Sympistis, [Oncocnemis] | 931798 | |
| Behrensia Grote | 931774 | |
10485 | behrensiana Grote, Orthosia, [Graphiphora] | 932769 | |
| behrensii Edwards, Nadata | 930047 | |
| behri of authors, Acontia, misspelled | 931374 | |
8179.3 | behrii Stretch, Grammia, [Arctia] | 930260 | |
9164 | behrii Smith, Acontia | 931374 | |
8281 | belae Grote, Didasys | 930459 | |
| belangeri Morrison, Apamea, [Orthosia] | 932347 | |
7988 | belfragei Grote, Heterocampa | 930080 | |
11046 | belfragei Smith, Abagrotis, [Rhynchagrotis] | 933687 | |
| belfragei Stretch, Virbia, [Crocata] | 930300 | |
| belfragei Grote, Renia | 930536 | |
| belfragiana Harvey, Catocala | 930831 | |
| bella Grote, Hadena, [Mamestra] | 932913 | |
9147 | bella Barnes & Benjamin, Tarache | 931361 | |
| bella Linnaeus, Utetheisa, [Phalaena] | 930348 | |
| belladona Strand, Heliothis, [Dysocnemis], misspelled | 932052 | |
11080 | belladonna Edwards, Heliothis, [Melicleptria] | 932052 | |
| bellicula Dyar, Cisthene, [Illice] | 930188 | |
9046 | bellicula Hübner, Deltote, [Lithacodia] | 931289 | |
| Bellura Walker | 932512 | |
| belmaria Ehrmann, Virbia, [Crocota] | 930297 | |
| Bembina Walker | 930170 | |
| Bendis Hübner | 930969 | |
| Bendisodes Hampson | 930978 | |
| benesignata Harvey, Zale, [Homoptera] | 931038 | |
9545 | benesimilis McDunnough, Euplexia | 932290 | |
| benigna Edwards, Hemibryomima, [Perigea] | 932728 | |
| benigna Ferguson, Orgyia– ssp. | 930164 | |
| benignalis Walker, Hypena | 930562 | |
7987 | benitensis Blanchard, Heterocampa | 930079 | |
| benjamini Franclemont, Abagrotis | 933663 | |
| benjamini Hill, Chrysoecia, [Chamoclea] | 931672 | |
| benjamini Draudt, Micrathetis | 932031 | |
8837.1 | benjamini Brower, Catocala | 930820 | |
10087 | benjamini Lindsey, Sympistis, [Oncocnemis] | 931936 | |
| benjamini Brower, Catocala– ssp. | 930820 | |
| benjamini Hill, Lasionycta– ssp., [Lascionycta] | 932987 | |
10359 | benjamini Hill, Lasionycta, [Lascionycta] | 932987 | |
| benjamini Lemmer, Melanchra, form | 932874 | |
| Benjaminiola Strand | 932432 | |
9689.1 | berinda Druce, Perigea | 931988 | |
10698.4 | beringiana Lafontaine & Kononenko, Feltia, [Trichosilia] | 933493 | |
9383.1 | bernardino Mikkola & Mustelin, Apamea | 932342 | |
| Bertholdia Schaus | 930389 | |
10150.1 | bes Troubridge, Sympistis | 931957 | |
| besla Skinner & Mengel, Sympistis, [Anarta] | 931931 | |
| Bessula Grote | 932061 | |
9655.1 | beta Barnes & Benjamin, Caradrina, [Platyperigea] | 932259 | |
8705 | bethunei Smith, Zale, [Phaeocyma] | 931040 | |
9887 | bethunei Grote & Robinson, Lithophane, [Xylina] | 932533 | |
| betsia Smith, Fishia | 932693 | |
9208 | betulae Riley, Acronicta, [Acronycta] | 931429 | |
| beutenmulleri Barnes & McDunnough, Catocala | 930838 | |
| bialba Smith, Euxoa | 933397 | |
| bianca Edwards, Catocala | 930795 | |
| bias Druce, Galgula, [Thalpochares] | 932249 | |
8665 | bibitrix Hübner, Coenipeta, [Helia] | 930990 | |
10950 | bicarnea Guenée, Pseudohermonassa, [Noctua] | 933629 | |
10926.1 | bicava Lafontaine, Spaelotis | 933555 | |
7965 | bichorda Hampson, Rifargia, [Heterocampa] | 930057 | |
10899 | biclavis Grote, Protogygia, [Agrotis] | 933305 | |
10788 | bicollaris Grote, Euxoa, [Agrotis] | 933417 | |
| bicolor Walker, Spilosoma, [Rhagonis] | 930313 | |
10179 | bicolor McDunnough, Behrensia | 931776 | |
8211.1 | bicolor Walker, Lophocampa | 930370 | |
| bicolor Barnes & McDunnough, Lacinipolia, [Polia] | 933032 | |
| bicolor Crabo & Fauske, Copablepharon– ssp. | 933280 | |
9028 | bicolor Barnes & McDunnough, Phoenicophanta | 931281 | |
8043 | bicolor Grote, Eilema, [Lithosia] | 930217 | |
| bicolor Lempke, Orgyia | 930160 | |
| bicolor Draudt, Holoarctia, [Orodemnias] | 930234 | |
9957 | bicolorago Guenée, Sunira, [Xanthia] | 932616 | |
9084 | bicolorata Barnes & McDunnough, Ponometia, [Tortricidia] | 931307 | |
| bicolorata Grote, Neleucania, [Heliophila] | 933169 | |
| bicrenuscula Dyar, Meganola, [Roeselia] | 931128 | |
11122 | bicuspida Smith, Schinia | 932131 | |
| bicuspis Borkhausen, Furcula, extralimital | 990003 | Note |
| bicycla Packard, Sympistis, [Anarta] | 931930 | |
8542.1 | bidens Geyer, Gonodonta | 930620 | |
7929 | bidentata Walker, Nerice | 930018 | |
8004 | biedermani Barnes & McDunnough, Schizura | 930097 | |
8028 | biedermani Skinner, Crinodes | 930053 | |
| bifascia Hübner, Schinia | 932092 | |
| bifasciata Bates, Ptichodis, [Celiptera] | 930932 | |
| bifasciata Barnes & McDunnough, Allerastria, [Eustrotia] | 930744 | |
10796 | bifasciata Smith, Euxoa, [Agrotis] | 933355 | |
| biferalis Walker, Hypenula, [Herminia] | 930527 | |
| bifida Strand, Heliothodes | 932036 | |
| bifidalis Grote, Lascoria, [Tortricodes] | 930547 | |
| bifira Edwards, Clostera, [Ichthyura] | 930009 | |
11125 | biforma Smith, Schinia | 932143 | |
10908.1 | biformata Lafontaine, Anicla | 933220 | |
10736 | biformata Smith, Euxoa | 933313 | |
9683.1 | biformata Lafontaine & Walsh, Bryolymnia | 932244 | |
8625 | biformata Edwards, Drasteria, [Synedoida] | 930897 | |
8501 | bigallis Smith, Metalectra, [Homopyralis] | 930681 | |
| biguttata Packard, Schizura, [Coelodasys] | 930098 | |
8443 | bijugalis Walker, Hypena | 930564 | |
| bilimeci Hampson, Tarache | 931370 | |
9157 | bilimeki Felder & Rogenhofer, Tarache, [Acontia] | 931370 | |
8402 | bilinealis Barnes & McDunnough, Macristis, [Dercetis] | 930556 | |
| bilinearis Martyn, Argyrostrotis, [Phalaena] | 930956 | |
7999 | bilineata Packard, Lochmaeus, [Cecrita] | 930091 | |
| bilineata Packard, Lochmaeus– ssp., [Cecrita] | 930091 | |
| bilineata Draudt, Ophisma | 930968 | |
8438 | bilineata Barnes & McDunnough, Abablemma, [Phobolosia] | 930652 | |
8667 | bilineata Smith, Metria, [Campometra] | 930993 | |
8907 | biloba Stephens, Megalographa, [Plusia] | 931209 | |
| biloba Haworth, Lateroligia, [Noctua] | 932363 | |
| bilunata Grote, Caradrina | 932257 | |
| bimaculata Gmelin, Alypia, [Phalaena] | 931979 | |
| bimaculata Saunders, Virbia, [Arctia] | 930299 | |
8911 | bimaculata Stephens, Autographa, [Plusia] | 931200 | |
9312 | bimaculata Herrich-Schäffer, Alypiodes, [Agarista] | 931977 | |
11017 | bimarginalis Grote, Abagrotis, [Agrotis] | 933656 | |
11201 | bimatris Harvey, Schinia, [Pippona] | 932063 | |
11105 | bina Guenée, Schinia, [Anthoecia] | 932150 | |
11221 | binda Barnes, Grotella | 931708 | |
9089 | binocula Grote, Ponometia, [Tarache] | 931313 | |
| binominalis Smith, Parabagrotis, [Agrotis] | 933643 | |
| binotata Walker, Aseptis– ssp., [Mamestra] | 932634 | |
9532 | binotata Walker, Aseptis, [Mamestra] | 932634 | |
| binotula Herrich-Schäffer, Chrysodeixis, [Plusia] | 931170 | |
| bipars Walker, Agrotis | 933528 | |
| bipartita Walker, Scotura, [Zunacetha] | 930139 | |
| bipartita Smith, Hypena, [Anepischetos] | 930579 | |
| biplaga Walker, Pseudeustrotia, [Erastria] | 932205 | |
| biplaga Guenée, Tarache, [Acontia] | 931343 | |
| bipuncta Morrison, Gabara– ssp., [Eucalyptra] | 930643 | |
| bipunctata Walker, Spodoptera, [Xylina] | 932223 | |
| bipunctina Guenée, Alabama, [Anomis] | 930611 | |
9486 | birdi Dyar, Papaipema, [Gortyna] | 932478 | |
10311 | biren Goeze, Papestra, [Phalaena] | 932893 | |
| birnata Smith, Resapamea– ssp., [Hadena] | 932368 | |
| bisagittifera Benjamin, Euxoa | 933355 | |
| bisinuata Felder & Rogenhofer, Melipotis, [Bolina] | 930872 | |
| Bistica Dyar | 931760 | |
8765 | bistrialis Geyer, Doryodes, [Agriphila] | 930925 | |
8727 | bistriaris Hübner, Parallelia | 930961 | |
| bistriga Smith, Cucullia | 931529 | |
| bistriga Walker, Melipotis, [Bolina] | 930876 | |
| bistrigalis Stephens, Idia, [Camptylochila] | 930482 | |
8751 | bistrigata Hübner, Ptichodis | 930934 | |
9827 | bistrigata Barnes & McDunnough, Nacopa, [Acopa] | 931628 | |
10632 | bisulca Grote, Tricholita, [Mamestra] | 933200 | |
| Biturix Walker | 930394 | |
| Biula Walker, preoccupied | 930884 | |
7995 | biundata Walker, Heterocampa | 930087 | |
9760 | biundulalis Zeller, Lineostriastiria, [Sedenia] | 931667 | |
11157 | biundulata Smith, Schinia | 932070 | |
| biundulata Smith, Lineostriastiria, [Sedenia], emendation | 931667 | |
8247 | bivittata Clemens, Ectypia | 930420 | |
8359 | bivittata Grote, Macrochilo, [Pallachira] | 930506 | |
| bivittata Lafontaine, Euxoa– ssp. | 933331 | |
| bivittata Walker, Melipotis, [Bolina] | 930875 | |
| blacei Hampson, Grammia, [Apantesis] | 930269 | |
8185 | blakei Grote, Grammia, [Arctia] | 930269 | |
11216 | blanca Barnes, Grotella | 931703 | |
| blanca Hardwick, Schinia | 932169 | |
9783 | blanchardi Hogue, Stiria, [Basilodes] | 931691 | |
10216 | blanchardi Todd, Opsigalea | 931542 | |
11229 | blanchardi McElvare, Grotella | 931716 | |
| blanda Grote, Mesogona, [Choephora] | 932610 | |
8867 | blandula Hulst, Catocala | 930851 | |
| Blepharidia Hübner | 930760 | |
| Blepharonia Hübner | 930760 | |
| Bleptina Guenée | 930519 | |
9433.1 | bloomfieldi Mustelin, Orthomoia | 932418 | |
| Blosyris Hübner | 930754 | |
| bocha Morrison, Euxoa, gender-conform | 933307 | |
| bocharae Goldschmidt, Lymantria | 930141 | |
10913 | bochus Morrison, Euxoa, [Agrotis] | 933307 | |
| bohemani Staudinger, Lasionycta– ssp., [Anarta] | 932970 | |
| boisduvalii Butler, Leptarctia | 930336 | |
8183 | bolanderi Stretch, Grammia, [Arctia] | 930263 | |
| Boletobia Boisduval | 930672 | |
| Boletobiinae Guenée | 930672 | |
| Boletobiini Guenée | 930672 | |
| Bolina of authors, not Duponchel, 1845 | 930868 | |
| Bolitobia Agassiz, misspelled | 930672 | |
10956 | bollii Grote, Agnorisma, [Agrotis] | 933628 | |
| bolteri Smith, Orthodes– ssp., [Mamestra] | 933140 | |
10941 | bolteri Smith, Xestia, [Noctua] | 933587 | |
8241 | bolteri Stretch, Euchaetes | 930415 | |
| bolteri Edwards, Pseudohemihyalea, [Seirarctia] | 930380 | |
10589 | bolteri Smith, Orthodes, [Mamestra] | 933140 | |
| Bombopsyche Hampson | 930455 | |
| Bombycia of authors, not Hübner, 1822 | 932651 | |
| bombyciformis Smith, Psaphida, [Eutolype] | 931552 | |
| bombycina of authors, Papestra, not Hufnagel, 1766 | 932893 | |
| Bomolocha Hübner | 930560 | |
| bonaerensis Berg, Autographa, excluded | 990037 | |
| bonneville Shepard & Crabo, Eudryas– ssp. | 931965 | |
| bonniwelli Barnes & Benjamin, Dasychira, [Olene] | 930158 | |
10029 | bonuscula Smith, Pleromelloida, [Pleroma] | 931778 | |
9898.1 | boogeri Troubridge, Lithophane | 932568 | |
| borea Herrich-Schäffer, Apamea, preoccupied | 932351 | |
| borea Guenée, Apamea, [Crymodes], preoccupied | 932351 | |
8934 | borea Aurivillius, Syngrapha, [Plusia] | 931220 | |
| borealis Fitch, Orgyia | 930168 | |
| borealis Möschler, Platarctia, [Arctia] | 930288 | |
| borealis Strand, Apamea, form | 932343 | |
| borealis Smith, Idia, [Helia] | 930474 | |
7936 | borealis Guérin-Méneville, Furcula, [Dicranoura] | 930024 | |
| borealis Staudinger, Phragmatobia, [Spilosoma] | 930332 | |
| borealis Reuter, Syngrapha, [Plusia] | 931216 | |
8902.1 | borealis Lafontaine & Poole, Euchalcia | 931181 | |
10011 | borealis Smith, Brachionycha, [Asteroscopus] | 931558 | |
| borealis Dyar, Acopa, [Grypotes] | 931627 | |
11081 | borealis Hampson, Heliothis, [Dysocnemis] | 932053 | |
| borealis Smith, Psaphida, [Copipanolis] | 931553 | |
10698.3 | boreana Lafontaine, Feltia, [Trichosilia] | 933492 | |
| boretha Smith, Euxoa, [Chorizagrotis] | 933308 | |
| Borolia Moore | 932936 | |
| Boryzola Hampson | 930916 | |
| Boryzola Pagenstecher, misspelled | 930754 | |
| Boryzops Richards | 930915 | |
10812 | bostoniensis Grote, Euxoa, [Agrotis] | 933353 | |
| bostura Smith, Protorthodes– ssp., [Taeniocampa] | 933103 | |
9628 | boucheri Barbut & Lalanne-Cassou, Neophaenis | 932279 | |
| boweri Chermock & Chermock, Lochmaeus, [Heterocampa] | 930091 | |
8179.2 | bowmani Ferguson & Schmidt, Grammia | 930268 | |
| brachiolum Harvey, Lacinipolia, [Mamestra] | 933016 | |
| Brachionycha Hübner | 931557 | |
| Brachionyx Meigen, misspelled | 931557 | |
| Brachycosmia Hampson, preoccupied | 932414 | |
| Brachylomia Hampson | 932651 | |
| Brachyonix Berio, misspelled | 931557 | |
| Brachyonycha Agassiz, misspelled | 931557 | |
8166.2 | brachyptera Troubridge & Lafontaine, Arctia | 930292 | |
| bractea of authors, Autographa, not [Denis & Schiffermüller], 1775 | 931204 | |
| brannani Stretch, Alypia | 931981 | |
| brasiliella Guenée, Cydosia | 931255 | |
| brassicae Riley, Trichoplusia, [Plusia] | 931168 | |
8432 | brauneata Swett, Sigela, [Eois] | 930657 | |
| braziliensis Hampson, Neogalea | 931770 | |
9524 | brehmei Barnes & McDunnough, Bellura, [Arzama] | 932515 | |
10313 | brenda Barnes & McDunnough, Papestra, [Polia] | 932895 | |
| brevicornis Walker, Virbia, [Crocota] | 930300 | |
10824 | brevipennis Smith, Euxoa, [Agrotis] | 933438 | |
| brevipennis Stretch, Eudryas– ssp. | 931965 | |
9300 | brevipennis Stretch, Eudryas | 931965 | |
| brevirostralis Grote, Renia | 930529 | |
| brevis Grote, Schinia, [Anthoecia] | 932114 | |
| brevistriga Smith, Euxoa | 933438 | |
9415 | bridghamii Grote & Robinson, Oligia, [Mamestra] | 932382 | |
| bridghamii Grote & Robinson, Oligia– ssp., [Mamestra] | 932382 | |
| bridwelli Brower, Catocala | 930849 | |
| brillians Ottolengui, Xylena, [Calocampa] | 932521 | |
9620 | brillians Barnes, Miracavira, [Feralia] | 931567 | |
8179.5 | brillians Schmidt, Grammia | 930261 | |
| brillians Barnes & McDunnough, Euplexia | 932289 | |
9311 | brillians Neumögen, Eupseudomorpha, [Edwardsia] | 931976 | |
8437 | brimleyana Dyar, Abablemma, [Phobolosia] | 930651 | |
| briseana Strand, Catocala | 930804 | |
8817 | briseis Edwards, Catocala | 930804 | |
| britana McDunnough, Nycteola– ssp. | 931142 | |
| brochus Morrison, Euxoa, [Agrotis], misspelled | 933307 | |
| Brotis Hübner | 933306 | |
| Brotolomia Lederer | 932290 | |
9176.1 | brouana Ferguson, Bagisara | 931251 | |
10701.1 | broui Lafontaine, Dichagyris | 933253 | |
| browerarum Johnson, Catocala | 930824 | |
| broweri Muller, Catocala | 930858 | |
9231.1 | browni Mustelin & Leuschner, Acronicta | 931448 | |
| brucei Smith, Schinia | 932154 | |
9877 | brucei Smith, Xylena, [Calocampa] | 932523 | |
| brucei Edwards, Clostera– ssp., [Ichthyura] | 930008 | |
| brucei Smith, Cucullia, [Rancora] | 931536 | |
| brucei Smith, Orthosia– ssp., [Taeniocampa] | 932778 | |
7900 | brucei Edwards, Clostera, [Ichthyura] | 930008 | |
8159 | brucei Edwards, Neoarctia, [Arctia] | 930236 | |
| Bruceia Neumögen | 930212 | |
| Brujas Guenée | 930754 | |
| brumosa Guenée, Acronicta– ssp., [Acronycta] | 931472 | |
9255 | brumosa Guenée, Acronicta, [Acronycta] | 931472 | |
| brunnea Grote & Robinson, Heterocampa | 930075 | |
10346.1 | brunnea Crabo & Lafontaine, Lasionycta | 933000 | |
| brunnea Schulze, Lymantria | 930141 | |
8265 | brunnea Stretch, Ctenucha | 930438 | |
11182 | brunnea Barnes & McDunnough, Schinia | 932162 | |
| brunnea Strecker, Hyphantria | 930319 | |
8029 | brunnea Schaus, Pseudhapigia | 930120 | |
11006 | brunneicollis Grote, Protolampra, [Noctua] | 933649 | |
9580 | brunneicrista Smith, Hyppa | 932667 | |
| brunneifasciata Barnes & McDunnough, Drasteria– ssp., [Melipotis] | 930901 | |
| brunneigera Grote, Euxoa, [Agrotis] | 933412 | |
10787 | brunneigera Grote, Euxoa, [Agrotis] | 933415 | |
11044 | brunneipennis Grote, Abagrotis, [Agrotis] | 933683 | |
9641 | brunneoatra Strand, Amphipyra | 931547 | |
11002 | brunneomedia McDunnough, Anaplectoides | 933566 | |
| brunneoochracea Strand, Eublemma | 930695 | |
| brunneoochracea Strand, Eucirroedia, form | 932609 | |
| brunnior Strand, Focillidia, form | 930967 | |
| bryanti Barnes, Zanclognatha– ssp. | 930500 | |
10986 | bryanti Benjamin, Xestia, [Archanarta] | 933614 | |
| Bryoleuca Hampson | 932194 | |
| Bryolymnia Hampson | 932239 | |
| Bryonycta Boursin | 932194 | |
| Bryophila Treitschke | 932194 | |
| Bryophilinae Guenée | 932194 | |
| Bryopsis Boursin | 932194 | |
| Buccholzia Barnes & Benjamin, preoccupied | 932432 | |
8754 | bucetum Grote, Ptichodis, [Celiptera] | 930937 | |
10654 | buchholzi Barnes & Benjamin, Agrotis, [Feltia] | 933524 | |
8706 | buchholzi McDunnough, Zale | 931041 | |
| buchholzi Wyatt, Virbia, [Holomelina] | 930306 | |
10102.2 | buchis Troubridge, Sympistis | 931903 | |
10406.1 | bucketti Selman & Leuschner, Lacinipolia | 933054 | |
| budea Hübner, Hyphantria, [Cycnia] | 930319 | |
| budensis Freyer, Xestia, [Agrotis] | 933571 | |
9463 | buffaloensis Grote, Parapamea, [Ochria] | 932464 | |
10954 | bugrai Koçak, Agnorisma, [Xestia] | 933627 | |
| bukovina Strand, Orgyia | 930160 | |
| Bulia Walker | 930884 | |
| Bullia Kimball, misspelled | 930884 | |
9069 | bullula Grote, Amyna, [Pteraetholix] | 931252 | |
9542 | bultata Smith, Aseptis, [Hadena] | 932647 | |
| bunkeri Grote, Catocala | 930794 | |
8913.1 | buraetica Staudinger, Autographa, [Plusia] | 931195 | |
| burdigalensis Mabille, Lymantria, [Liparis] | 930141 | |
9378 | burgessi Morrison, Apamea, [Luceria] | 932339 | |
| burgessi Morrison, Apamea– ssp., [Luceria] | 932339 | |
| burserae Dyar, Paectes, [Ingura] | 931117 | |
10421 | buscki Barnes & Benjamin, Lacinipolia, [Polia] | 933074 | |
11146 | buta Smith, Schinia | 932097 | |
| butleri Dyar, Utetheisa | 930348 | |
10113.4 | buto Troubridge, Sympistis | 931919 | |
9172 | buxea Grote, Bagisara, [Schinia] | 931244 | |
| Byssophaga Stretch | 930175 | |