| jacchusalis Walker, Zanclognatha– ssp., [Herminia] | 930500 | |
| 8353 | jacchusalis Walker, Zanclognatha, [Herminia] | 930500 | |
| jacchusalis of authors, Zanclognatha, not Walker, 1859 | 930499 | |
| 8113 | jacobaeae Linnaeus, Tyria, [Phalaena] | 930347 | |
| jacobeae of authors, Tyria, misspelled | 930347 | |
| jacquenetta Edwards, Catocala | 930857 | |
| jaculifera of authors, Feltia, not Guenée, 1852 | 933501 | |
| 10670 | jaculifera Guenée, Feltia, [Agrotis] | 933498 | |
| 11161 | jaegeri Sperry, Schinia, [Chlorocleptria] | 932136 | |
| 9128 | jaguaralis Hampson, Spragueia | 931388 | |
| 11132 | jaguarina Guenée, Schinia, [Anthoecia] | 932073 | |
| 8879 | jair Strecker, Catocala | 930861 | |
| jalapa Hampson, Dichagyris, [Agrotis] | 933246 | |
| 8532.1 | jalapena Schaus, Cecharismena, [Rhaesena] | 930749 | |
| jalapensis Neumögen, Horama | 930466 | |
| 7960 | jaliscana Schaus, Notela | 930136 | |
| 9160.1 | jaliscana Schaus, Acontia, [Tarache] | 931377 | |
| jamaicensis Cockerell, Cydosia | 931255 | |
| 9630.1 | jamaicensis Möschler, Callopistria, [Eriopus] | 932191 | |
| janae Herz, Xestia, [Agrotis] | 933596 | |
| Janseodes Viette | 930725 | |
| janualis Grote, Xestia, [Agrotis] | 933586 | |
| 8603 | januaris Guenée, Melipotis, [Bolina] | 930874 | |
| 10605.2 | januaris Mustelin & Leuschner, Fergusonix | 933190 | |
| japonica Inoue & Kobayashi, Parasemia | 930283 | |
| japonica Motschulsky, Lymantria, [Liparis] | 930141 | |
| jaquenetta McDunnough, Catocala | 930857 | |
| Jarasana Moore | 930868 | |
| jaspidea Borkhausen, Anaplectoides, [Phalaena] | 933564 | |
| Jaspidia Hübner, suppressed | 932194 | |
| Jaspidia Hübner | 932194 | |
| 9924.2 | jefferyi Troubridge & Lafontaine, Lithophane | 932561 | |
| jemezensis Dyar, Cucullia, [Copicucullia] | 931526 | |
| 10082.3 | jenniferae Troubridge, Sympistis | 931839 | |
| jessica Barnes, Ectypia– ssp., [Seirarctia] | 930422 | |
| 8825 | jessica Edwards, Catocala | 930808 | |
| jezoensis Inoue, Parasemia | 930283 | |
| Jnopsis Felder, variety | 930228 | |
| 9893.2 | joannis Metzler & Covell, Lithophane | 932540 | |
| joaquin McDunnough, Heliothodes | 932036 | |
| 11210.1 | joaquinensis Hardwick, Heliolonche | 932188 | |
| jocasta Smith, Eremobina, [Hadena] | 932374 | |
| jocasta Strecker, Catocala | 930831 | |
| 10094.3 | jocelynae Troubridge, Sympistis | 931852 | |
| Jocheaera Hübner | 931419 | |
| Jocilla Herrich-Schäffer, misspelled | 930986 | |
| 10005 | jocosa Guenée, Feralia, [Diphtera] | 931561 | |
| jocosa Edwards, Clostera– ssp., [Ichthyura] | 930004 | |
| 10594 | jocosa Barnes & McDunnough, Hexorthodes, [Eriopyga] | 933151 | |
| jocosides Strand, Feralia, form | 931561 | |
| Jodia Hampson | 932595 | |
| johanseni McDunnough, Apamea | 932351 | |
| johanseni Bang-Haas, Acerbia– ssp., [Hyphoraia] | 930284 | |
| 8861 | johnsoniana Brower, Catocala | 930823 | |
| johnstoni McDunnough, Perigonica, [Orthosia] | 932754 | |
| johnstoni McDunnough, Euxoa | 933405 | |
| jola Barnes & Benjamin, Hadena, [Epia] | 932919 | |
| juanita Schaus, Orodesma, [Catocala] | 930917 | |
| 8076 | juanita Barnes & Benjamin, Cisthene | 930193 | |
| 8607 | jucunda Hübner, Melipotis | 930878 | |
| 10919 | jucunda Walker, Diarsia, [Graphiphora] | 933533 | |
| jucunda Behr, Melipotis– ssp. | 930878 | |
| jucundella Dyar, Elaphria, see note | 990019 | Note |
| jucundissima Dyar, Syntomeida– ssp. | 930462 | |
| 8781 | judith Strecker, Catocala | 930771 | |
| 9183.2 | judyae Anweiler, Panthea | 931394 | |
| 10576 | jugifera Dyar, Hyperepia, [Hyssia] | 933127 | |
| 11075 | julia Grote, Heliocheilus, [Rhodosea] | 932059 | |
| 8328 | julia Barnes & McDunnough, Idia, [Camptylochila] | 930476 | |
| juliae Hardwick, Euxoa– ssp. | 933336 | |
| julietta French, Catocala | 930809 | |
| julitae Benjamin, Simyra– ssp., [Ommatostolidea] | 931493 | |
| jumpi Hawks, Catocala– ssp. | 930820 | |
| junceti Zeller, Spodoptera, [Caradrina] | 932215 | |
| juncicola Guenée, Leucania | 932957 | |
| juncimacula Smith, Polia, [Hadena] | 932872 | |
| 11003 | juncta Grote, Chersotis, [Agrotis] | 933550 | |
| 9071.1 | junctimacula Blanchard, Aleptina | 931634 | |
| 8829 | junctura Walker, Catocala | 930809 | |
| juncturana Strand, Catocala | 930809 | |
| juncturella Strand, Catocala | 930809 | |
| juncturelloides Strand, Catocala | 930809 | |
| jurgiosa Walker, Ephyrodes | 931083 | |
| juvenalis of authors, Hydroeciodes, not Grote, 1881 | 933205 | |
| 10635 | juvenilis Grote, Hydroeciodes, [Gortyna] | 933205 | |
