| Nacopa Barnes & Benjamin | 931627 | |
| nada Strand, Apamea | 932347 | |
| Nadata Walker | 930045 | |
| 10381 | naevia Smith, Lacinipolia, [Mamestra] | 933029 | |
| naevulus Smith, Euxoa, [Carneades] | 933464 | |
| 10620.3 | naglei Lafontaine, Ferris & Walsh, Hypotrix | 933177 | |
| Nagunda Moore | 930140 | |
| naidella Strand, Apantesis | 930278 | |
| 8171 | nais Drury, Apantesis, [Phalaena] | 930280 | |
| 9035 | nana Hübner, Hyperstrotia, [Cryphia] | 930727 | |
| 9291 | nana Barnes & McDunnough, Cryphia, [Cerma] | 932199 | |
| 8967 | nana Walker, Paectes, [Edema] | 931117 | |
| 9552 | nanaimo Barnes, Ipimorpha | 932677 | |
| 11038 | nanalis Grote, Abagrotis, [Agrotis] | 933666 | |
| 9797 | nanata Neumögen, Nocloa, [Stiria] | 931581 | |
| 9097 | nannodes Hampson, Ponometia, [Tarachidia] | 931321 | |
| nanoides Franclemont & Todd, Cryphia | 932199 | |
| Nanthilda Blanchard | 930715 | |
| nanuscula Dyar, Supralathosea, [Cucullia] | 931573 | |
| 9884 | napaea Morrison, Litholomia, [Scopelosoma] | 932530 | |
| napaea Morrison, Litholomia– ssp., [Scopelosoma] | 932530 | |
| napaea Grote, Litholomia | 932530 | |
| nargenta Ottolengui, Syngrapha, [Autographa] | 931227 | |
| narrans Walker, Panula, [Ophiusa] | 930883 | |
| narrata Walker, Caenurgina, [Poaphila] | 930924 | |
| Narthecophora Smith | 931729 | |
| 9926 | nasar Smith, Lithophane, [Xylina] | 932562 | |
| nasutaria Zeller, Phyprosopus, [Sudariophora] | 931101 | |
| 8492 | natatrix Guenée, Isogona | 930733 | |
| nattereri Druce, Eutelia | 931120 | |
| navarra Dyar, Schinia | 932084 | |
| 9751 | navia Harvey, Plagiomimicus, [Telesilla] | 931658 | |
| navium Harvey, Plagiomimicus, gender-conform | 931658 | |
| Neadysgonia Sullivan | 930956 | |
| nearctica Ferguson, Syngrapha | 931230 | |
| nebraskae Dodge, Catocala | 930800 | |
| 9496 | nebris Guenée, Papaipema, [Gortyna] | 932501 | |
| 9033 | nebula Barnes & McDunnough, Ozarba | 931305 | |
| nebulosa Maassen, Melipotis, [Bolina] | 930874 | |
| 8796 | nebulosa Edwards, Catocala | 930787 | |
| necopina of authors, Papaipema, not Grote, 1876 | 932509 | |
| 9497 | necopina Grote, Papaipema, [Gortyna] | 932510 | |
| 8532 | nectarea Möschler, Cecharismena | 930748 | |
| Nedra Clarke | 932282 | |
| 8151 | nedyma Franclemont, Arachnis | 930328 | |
| nefascia of authors, Abagrotis, not Smith, 1908 | 933682 | |
| 11024 | nefascia Smith, Abagrotis, [Rhynchagrotis] | 933663 | |
| 8369 | negalis Barnes & McDunnough, Tetanolita | 930519 | |
| negascia Smith, Abagrotis, [Rhynchagrotis] | 933663 | |
| negascia Smith, Abagrotis, [Rhynchagrotis] | 933682 | |
| neglecta Strecker, Schinia | 932118 | |
| negussa Smith, Orthosia, [Mamestra] | 932776 | |
| Neleucania Smith | 933164 | |
| 9502 | nelita Strecker, Papaipema, [Hydroecia] | 932506 | |
| Nelphe Herrich-Schäffer | 930445 | |
| Nemeophila Stephens | 930282 | |
| 8380 | nemoralis Barnes & McDunnough, Renia | 930531 | |
| 10135.8 | nenun Troubridge, Sympistis | 931882 | |
| Neoarctia Neumögen & Dyar | 930234 | |
| 10872 | neoclivis Barnes & Benjamin, Dichagyris, [Rhizagrotis] | 933235 | |
| neocula Smith, Acontia | 931375 | |
| Neoerastria McDunnough | 932023 | |
| Neogalea Hampson | 931769 | |
| 8798 | neogama Smith, Catocala, [Phalaena] | 930790 | |
| neogama Smith, Catocala– ssp., [Phalaena] | 930790 | |
| Neogrotella Barnes & Benjamin | 931716 | |
| Neoherminia Druce | 930486 | |
| Neoligia Troubridge & Lafontaine | 932386 | |
| neomexicana Smith, Ponometia, [Acontia] | 931314 | |
| 8251 | neomexicana Barnes, Pygarctia | 930425 | |
| 7913 | neomexicana Doll, Datana | 930044 | |
| neomexicana Smith, Euxoa, [Carneades] | 933462 | |
| Neophaenis Hampson | 932278 | |
| Neophaeus Dyar | 931645 | |
| Neophoenis Neave, misspelled | 932278 | |
| Neoplynes Hampson | 930399 | |
| Neotarache Barnes & Benjamin | 931299 | |
| Neotarche Barnes & Benjamin, misspelled | 931299 | |
| neotelis Smith, Euxoa, [Carneades] | 933395 | |
| neoterica Smith, Orthodes– ssp., [Mamestra] | 933146 | |
| Neotuerta Kiriakoff | 931969 | |
| Neperigea McDunnough | 932717 | |
| nephasyntheta Lyman, Papaipema, misspelled | 932472 | |
| 9490 | nepheleptena Dyar, Papaipema, [Gortyna] | 932473 | |
| Nephelina Kirby | 931015 | |
| Nephelodes Guenée | 932809 | |
| nephrasyntheta of authors, Papaipema, not Dyar, 1908 | 932469 | |
| nephrasyntheta Dyar, Papaipema, [Gortyna] | 932478 | |
| nepotica Dyar, Azenia, [Stiriodes] | 931725 | |
| neptis Smith, Dargida– ssp., [Leucania] | 932928 | |
| Neptunia Barnes & McDunnough, preoccupied | 931305 | |
| Nerastria McDunnough | 931271 | |
| nerea Boisduval, Grammia, [Chelonia] | 930241 | |
| Nerice Walker | 930017 | |
| nerissa Edwards, Catocala | 930859 | |
| Neritos Walker | 930391 | |
| Nerresa Walker | 931251 | |
| nervosa Felder & Rogenhofer, Scotura, [Mieza] | 930139 | |
| nervosa Neumögen & Dyar, Grammia, [Euprepia] | 930240 | |
| nesaea Smith, Nocloa, [Omia] | 931579 | |
| nesilens Smith, Euxoa | 933342 | |
| nesiobia Bryk, Lymantria | 930141 | |
| neumanni Bandermann, Leucoma, [Stilpnotia] | 930170 | |
| 9771 | neumoegeni Edwards, Xanthothrix | 931670 | |
| Neumoegenia Grote | 931698 | |
| Neuronia Hübner | 932808 | |
| nevada Barnes & McDunnough, Scotogramma– ssp. | 932853 | |
| 10686.2 | nevada Crabo & Lafontaine, Copablepharon | 933272 | |
| 10769 | nevada Smith, Euxoa, [Carneades] | 933471 | |
| 10296 | nevadae Grote, Lacanobia, [Mamestra] | 932878 | |
| nevadensis Benjamin, Abagrotis, [Lampra] | 933676 | |
| nevadensis Beutenmüller, Catocala | 930806 | |
| nevadensis Grote & Robinson, Grammia– ssp., [Arctia] | 930258 | |
| 8179 | nevadensis Grote & Robinson, Grammia, [Arctia] | 930258 | |
| nexa Boisduval, Cisthene, [Lithosia] | 930180 | |
| 11062 | nexilis Morrison, Eutricopis | 932038 | |
| 8887 | ni Hübner, Trichoplusia, [Noctua] | 931168 | |
| 9034 | niama Dyar, Amiana | 931283 | |
| nicalis Smith, Egira– ssp., [Xylomiges] | 932794 | |
| nichollae Hampson, Drasteria, [Syneda] | 930896 | |
| nichollae Hampson, Apamea– ssp., [Protagrotis] | 932351 | |
| 8951 | nichollae Hampson, Plusia, [Phytometra] | 931237 | |
| nicticans Ménétriés, Parasemia, [Lithosia] | 930283 | |
| 8428 | nigellus Strecker, Dyspyralis, [Epizeuxis] | 930671 | |
| niger Smith, Parabagrotis, [Rhynchagrotis] | 933644 | |
| nigerrima Smith, Copanarta, [Oncocnemis] | 931781 | |
| Nigetia Walker | 930654 | |
| nigra Eastman, Catocala | 930806 | |
| nigra De Selys-Longchamps, Lymantria | 930141 | |
| nigra Stretch, Kodiosoma | 930432 | |
| nigra Chermock, Heterocampa | 930082 | |
| nigra Anweiler, Panthea– ssp. | 931398 | |
| nigra Chermock, Macrurocampa, [Heterocampa] | 930067 | |
| nigra Smith, Eurois– ssp., [Peridroma] | 933562 | |
| 10931 | nigra Smith, Eurois, [Peridroma] | 933562 | |
| 9101.1 | nigra Mustelin, Ponometia, [Tarachidia] | 931328 | |
| nigra Krausse, Noctua, [Agrotis] | 933551 | |
| nigramacula Barnes & Benjamin, Cosmia, [Namangana] | 932670 | |
| nigrescens Engel, Lithophane, [Xylina] | 932550 | |
| nigrescens Cassino, Catocala | 930841 | |
| 9972.1 | nigrescens Hammond & Crabo, Fishia | 932693 | |
| nigrescens Grote & Robinson, Melipotis, [Aedia] | 930871 | |
| nigrescens Rothschild, Cosmosoma | 930457 | |
| nigricans Bethune, Zale, [Homoptera] | 931030 | |
| 8119 | nigricans Reakirt, Virbia, [Crocota] | 930304 | |
| nigriceps Walker, Spaelotis, [Mamestra] | 933554 | |
| nigricosta Lempke, Euproctis | 930172 | |
| nigrifera Walker, Virbia, [Cothocida] | 930304 | |
| nigrimacula Warren, Garella | 931141 | |
| nigrinotata Warren, Garella | 931141 | |
| nigrior Strand, Zale | 931029 | |
| 9328 | nigrior Smith, Apamea, [Xylophasia] | 932296 | |
| nigripennis Grote, Euxoa, [Agrotis] | 933397 | |
| nigrirena Haworth, Schinia, [Phytometra] | 932156 | |
| 10698 | nigrita Graeser, Feltia, [Agrotis] | 933489 | |
| nigritula Guenée, Homophoberia, [Erastria] | 932025 | |
| 8602 | nigrobasis Guenée, Melipotis, [Bolina] | 930873 | |
| nigrocaput Morrison, Exyra, [Xanthoptera] | 931190 | |
| 10127 | nigrocaput Smith, Sympistis, [Oncocnemis] | 931874 | |
| nigrociliata Fuchs, Leucoma, [Stilpnotia] | 930170 | |
| nigrofascia Hulst, Spodoptera, [Leucania] | 932223 | |
| nigrofasciata Hampson, Leucania | 932948 | |
| nigrofasciata Zeller, Nola | 931129 | |
| 9044 | nigrofimbria Guenée, Marimatha, [Xanthoptera] | 931284 | |
| nigrofimbria Edwards, Marimatha, form | 931287 | |
| nigroflava Graef, Ectypia, [Spilosoma] | 930420 | |
| nigroguttata Grote, Motya, [Lussa] | 931155 | |
| nigrolunata Packard, Anarta– ssp. | 932823 | |
| 10327 | nigrolunata Packard, Anarta | 932823 | |
| nigromarginata Strecker, Drasteria, [Syneda] | 930914 | |
| nigrosignata Walker, Schizura, [Heterocampa] | 930098 | |
| nigrosignata Bandermann, Euproctis | 930171 | |
| nigrosparsata Draudt & Gaede, Orodesma, [Boryzola] | 930917 | |
| nigrostriata Cockayne, Euproctis | 930172 | |
| nigrosuffusana Strand, Charadra, form | 931406 | |
| nigroviolacea Rangnow, Syngrapha, [Phytometra] | 931230 | |
| nigrovittata Grote, Anicla, [Agrotis] | 933219 | |
| 8974 | nilotica Rogenhofer, Garella, [Sarrothripa] | 931141 | |
| nimbosa Guenée, Polia– ssp., [Aplecta] | 932867 | |
| 10275 | nimbosa Guenée, Polia, [Aplecta] | 932867 | |
| nimia Guenée, Orthodes | 933138 | |
| Nimyra Guenée, misspelled | 931492 | |
| niobe Strecker, Seirarctia, [Spilosoma] | 930308 | |
| 10286 | nipana Smith, Hexorthodes, [Mamestra] | 933160 | |
| Niphonyx Sugi | 932715 | |
| Nipista Walker | 932027 | |
| 10097 | nita Smith, Sympistis, [Oncocnemis] | 931864 | |
| nitela Guenée, Papaipema, [Gortyna], form | 932501 | |
| nitella Morris, Papaipema, misspelled | 932501 | |
| nitens Grote, Pseudorthodes, [Orthodes] | 933128 | |
| nitens Dyar, Proxenus, [Caradrina] | 932266 | |
| nitida Packard, Schizura, [Oedemasia] | 930103 | |
| 8542.3 | nitidimacula Guenée, Gonodonta | 930621 | |
| nivalis Stretch, Cycnia, [Euchaetes] | 930401 | |
| 10050 | nivalis Smith, Leucocnemis, [Oxycnemis] | 931619 | |
| nivaria Grote, Lasionycta, [Anarta] | 933010 | |
| nivea Herrich-Schäffer, Eupseudosoma, [Charidea] | 930389 | |
| nivea Neumögen, Furcula– ssp., [Heterocampa] | 930026 | |
| 7938 | nivea Neumögen, Furcula, [Heterocampa] | 930026 | |
| nivealis Smith, Gabara, [Eucalyptra] | 930643 | |
| niveata Barnes & Benjamin, Furcula– ssp., [Cerura] | 930026 | |
| niveicollis Smith, Tarache, [Acontia] | 931367 | |
| 11167 | niveicosta Smith, Schinia, [Heliothis] | 932146 | |
| niveicosta Smith, Neleucania | 933169 | |
| niveicostatus Grote, Fagitana, [Pseudolimacodes] | 932749 | |
| niveigutta Walker, Lophocampa, [Halesidota] | 930375 | |
| 10575 | niveiguttata Grote, Ulolonche, [Mamestra] | 933126 | |
| 10831 | niveilinea Grote, Euxoa, [Agrotis] | 933458 | |
| 9596 | niveirena Harvey, Properigea, [Perigea] | 932727 | |
| 9374 | niveivenosa Grote, Apamea, [Agrotis] | 932355 | |
| niveivenosa Grote, Apamea– ssp., [Agrotis] | 932355 | |
| niveocosta Franclemont, Lithophane, form | 932532 | |
| niveopicta Butler, Condica, [Ochria] | 931992 | |
| niveum Herrich-Schäffer, Eupseudosoma, gender-conform | 930389 | |
| nobilis Hübner, Cydosia, [Crameria] | 931255 | |
| nobilis Grote, Schinia, [Anthoecia] | 932126 | |
| 9000 | nobilitella Cramer, Cydosia, [Phalaena] | 931255 | |
| Nocloa Smith | 931576 | |
| Nocloina Poole | 931574 | |
| 8682.1 | noctar Schaus, Acritogramma, [Yrias] | 931014 | |
| 9259 | noctivaga Grote, Acronicta, [Acronycta] | 931476 | |
| Noctua Linnaeus | 933550 | |
| Noctuidae Latreille | 931160 | |
| 8485 | noctuidalis Dyar, Nychioptera, [Pleonectyptera] | 930721 | |
| noctuiformis Smith, Euxoa, [Carneades] | 933395 | |
| 8002 | noctuiformis Barnes & McDunnough, Ursia | 930095 | |
| 8954 | noctuiformis Neumögen, Aon | 930632 | |
| Noctuina Latreille | 933528 | |
| Noctuinae Latreille | 932204 | |
| Noctuini Latreille | 933210 | |
| Noctuoidea Latreille | 930000 | |
| 9736 | noela Druce, Bistica, [Mychonia] | 931761 | |
| noela Dyar, Bistica | 931761 | |
| Nola Leach | 931128 | |
| Nolaphana Grote | 931416 | |
| nolens Corti & Draudt, Xestia, [Anomogyna] | 933602 | |
| Nolidae Bruand | 931120 | |
| Nolinae Bruand | 931120 | |
| 8429 | noloides Barnes & McDunnough, Dyspyralis | 930672 | |
| 10866 | nomas Erschov, Euxoa, [Agrotis] | 933476 | |
| 10500 | nongenerica Barnes & Benjamin, Orthosia, [Orthosia] | 932783 | |
| norda Smith, Zale– ssp., [Phaeocyma] | 931032 | |
| nordica Smith, Euxoa, [Carneades] | 933395 | |
| norma Hübner, Anagrapha, [Autographa] | 931234 | |
| normalis Dyar, Gluphisia | 930023 | |
| 10470 | normalis Grote, Acerra | 932755 | |
| 10501 | normani Grote, Crocigrapha, [Perigrapha] | 932784 | |
| normani Bartsch, Catocala | 930792 | |
| normaniana Grote, Xestia, gender-conform | 933573 | |
| 10943 | normanianus Grote, Xestia, [Agrotis] | 933573 | |
| norna Morrison, Photedes, [Hadena] | 932421 | |
| Noropsis Guenée | 931120 | |
| norrlandica Schulte, Syngrapha | 931216 | |
| 10800 | nostra Smith, Euxoa, [Agrotis] | 933425 | |
| 9833 | notalis Grote, Fotella | 932034 | |
| Notarctia Smith | 930275 | |
| notaria Edwards, Odontosia, [Notodonta] | 930014 | |
| 10628 | notata Strecker, Tricholita | 933194 | |
| notatella Grote, Cucullia, [Epinyctis] | 931533 | |
| Notela Schaus | 930135 | |
| Nothophila Barnes & Lindsey, preoccupied | 930739 | |
| Notioplusia Lafontaine & Poole | 931174 | |
| Notodon Meigen | 930014 | |
| Notodonta Ochsenheimer | 930014 | |
| Notodontidae | 930139 | |
| Notodontidae Stephens | 930002 | |
| Notodontinae Stephens | 930009 | |
| Notodontini Stephens | 930009 | |
| 7948 | notodontoides Walker, Elymiotis | 930124 | |
| Notolophus Germar | 930159 | |
| nototaria Franclemont, Odontosia, misspelled | 930014 | |
| nova Smith, Utetheisa | 930348 | |
| 10253 | nova Smith, Tridepia, [Trichclea] | 932862 | |
| nova Fitch, Orgyia– ssp. | 930160 | |
| 8609 | novanda Guenée, Melipotis, [Bolina] | 930880 | |
| novangliae McDunnough, Euxoa– ssp. | 933439 | |
| novangliae Reiff, Catocala | 930860 | |
| novarae Felder & Rogenhofer, Galgula, [Thalpochares] | 932249 | |
| 10282 | noverca Grote, Orthodes, [Mamestra] | 933143 | |
| 8633 | nubicola Behr, Drasteria, [Syneda] | 930907 | |
| 8965 | nubifera Hampson, Paectes | 931115 | |
| 11137 | nubila Strecker, Schinia, [Heliothis] | 932117 | |
| nubilata Smith, Orthosia– ssp., [Taeniocampa] | 932778 | |
| nubilifascia Grote, Macrochilo, [Litognatha] | 930508 | |
| nubilis Hübner, Euparthenos– ssp., [Parthenos] | 931055 | |
| 8719 | nubilis Hübner, Euparthenos, [Parthenos] | 931055 | |
| 11082 | nuchalis Grote, Protoschinia, [Heliothis] | 932061 | |
| 9676 | nucicolora Guenée, Elaphria, [Monodes] | 932226 | |
| 10281 | nugatis Smith, Polia, [Mamestra] | 932873 | |
| nuicola Smith, Tarache, [Acontia] | 931341 | |
| numa Strecker, Euxoa, [Agrotis] | 933412 | |
| numa of authors, Cobubatha, part | 931275 | |
| 9013 | numa Druce, Cobubatha, [Eustrotia] | 931274 | |
| numa of authors, Cobubatha, not Druce, 1889 | 931272 | |
| nunatrum Esper, Xestia, [Bombyx] | 933588 | |
| 11177 | nundina Drury, Schinia, [Phalaena] | 932156 | |
| 9873 | nupera Lintner, Xylena, [Calocampa] | 932519 | |
| 8842 | nuptialis Walker, Catocala | 930828 | |
| nuptula Walker, Catocala | 930845 | |
| nurus Walker, Catocala | 930815 | |
| 8540 | nutrix Stoll, Gonodonta, [Phalaena] | 930617 | |
| Nychioptera Franclemont | 930720 | |
| nyctea Grum-Grschmailo, Euproctis, [Porthesia] | 930172 | |
| Nycteola Hübner | 931141 | |
| Nycterophaeta Smith | 931503 | |
| nycteus Stoll, Syntomeida, [Sphinx] | 930461 | |
| Nygmia Hübner | 930170 | |
| Nygmiini Holloway | 930170 | |
| nymphagoga Martyn, Hypocala, [Phalaena] | 930627 | |
| Nymphyxis Grote | 930169 | |
| Nystalea Guenée | 930120 | |
| Nystaleinae Forbes | 930120 | |