These are all the species I’ve seen here in May. Each photo on this page was actually taken in May, and is linked to my page about that moth with more photos and information.
- Abrostola urentis
- Acasis viridata
- Achatia distincta
- Acronicta americana
- Acronicta exilis
- Acronicta fallax
- Acronicta funeralis
- Acronicta hasta
- Acronicta impressa
- Acronicta innotata
- Acronicta interrupta
- Acronicta lepusculina
- Acronicta morula
- Acronicta spinigera
- Actias luna
- Allagrapha aerea
- Amorpha juglandis
- Anagrapha falcifera
- Anagrapha precationis
- Anania tertialis
- Anavitrinella pampinaria
- Anicla forbesi
- Antaeotricha leucillana
- Antepione thisoaria
- Anterastria teratophora
- Antheraea polyphemus
- Anticlea multiferata
- Anticlea vasiliata
- Argyrotaenia mariana
- Argyrotaenia velutinana
- Atteva aurea
- Autographa precationis
- Baileya doubledayi
- Baileya opthalmica
- Balsa tristrigella
- Bellura obliqua
- Besma endropiaria
- Besma quercivoraria
- Biston betularia
- Caenurgina
- Callopistria mollissima
- Campaea perlata
- Catabena lineolata
- Cerastis tenebrifera
- Charadra deridens
- Chlorochlamys chloroleucaria
- Cisseps fulvicollis
- Cissusa spadix
- Cladara atroliturata
- Clostera albosigma
- Clostera apicalis
- Clostera strigosa
- Cochylis temerana
- Condica vecors
- Condica videns
- Copivaleria grotei
- Costaconvexa centrostrigaria
- Crambodes talidiformis
- Crocigrapha normani
- Cycnia collaris
- Cycnia oregonensis
- Darapsa choerilus
- Darapsa myron
- Dargida diffusa
- Deidamia inscriptum
- Depressaria pastinacella
- Desmia funeralis
- Desmia maculalis
- Diacme adipaloides
- Dichorda iridaria
- Digrammia gnophosaria
- Drepana arcuata
- Drepana bilineata
- Dyseriocrania griseocapitella
- Dyspteris abortivaria
- Dysstroma hersiliata
- Ectropis crepuscularia
- Elaphria versicolor
- Ellida caniplaga
- Elophila obliteralis
- Endothenia hebesana
- Epiblema scudderiana
- Epirrhoe alternata
- Euchlaena serrata
- Euclidia cuspidea
- Eudeilinia herminiata
- Euphyia intermediata
- Eupithecia
- Eupithecia absinthiata
- Eupithecia ravocostaliata
- Euplexia benesimilis
- Eupsilia
- Eupsilia devia
- Eupsilia morrisoni
- Euthyatira pudens
- Eutrapela clemataria
- Furcula borealis
- Furcula cinerea
- Furcula modesta
- Furcula occidentalis
- Furcula scolopendrina
- Galgula partita
- Gluphisia septentrionis
- Habrosyne gloriosa
- Haematopis grataria
- Harrisimemna trisignata
- Hedya separatana
- Helcystogramma fernaldella
- Helcystogramma hystricella
- Heterocampa guttivitta
- Heterophleps refusaria
- Heterophleps triguttaria
- Homochlodes fritillaria
- Horisme intestinata
- Hydrelia albifera
- Hydrelia lucata
- Hydriomena
- Hydriomena transfigurata
- Hyles lineata
- Hypena abalienalis
- Hypena atomaria
- Hypena baltimoralis
- Hypena bijugalis
- Hypena deceptalis
- Hypena humuli
- Hypena madefactalis
- Hypenodes fractilinea
- Hypercompe scribonia
- Hyppa xylinoides
- Idia aemula
- Iridopsis larvaria
- Isturgia dislocaria
- Lacinipolia renigera
- Lascoria ambigualis
- Leucania
- Leuconycta diphteroides
- Leuconycta lepidula
- Lithophane bethunei
- Lithophane fagina
- Lithophane semiusta
- Lobophora nivigerata
- Lomographa glomeraria
- Lomographa vestaliata
- Macaria aemulataria
- Maliattha synochitis
- Meganola minuscula
- Melanchra adjuncta
- Melanchra picta
- Melanolophia signataria
- Mesoleuca ruficillata
- Metanema inatomaria
- Metarranthis duaria
- Metarranthis hypochraria
- Morrisonia confusa
- Morrisonia evicta
- Mythimna unipuncta
- Nadata gibbosa
- Nedra ramosula
- Nemoria mimosaria
- Nerice bidentata
- Ochropleura implecta
- Olethreutes bipartitana
- Orthonama obstipata
- Orthosia alurina
- Orthosia garmani
- Orthosia hibisci
- Orthosia rubescens
- Ostrinia nubilalis
- Pachysphinx modesta
- Palpita magniferalis
- Palthis angulalis
- Paonias myops
- Perispasta caeculalis
- Pero ancetaria
- Pero honestaria
- Petrophora subaequaria
- Phaeoura quernaria
- Phalaenophana pyramusalis
- Phaneta formosana species group
- Pheosia rimosa
- Phigalia strigataria
- Phigalia titea
- Phlogophora iris
- Phoberia atomaris
- Phosphila miselioides
- Phragmatobia fuliginosa
- Phyllodesma americana
- Plagodis alcoolaria
- Plagodis fervidaria
- Plagodis phlogosaria
- Plagodis pulveraria
- Plagodis serinaria
- Plusia contexta
- Probole amicaria
- Protitame virginalis
- Protoboarmia porcelaria
- Proxenus mendosa
- Proxenus miranda
- Psaphida electilis
- Psaphida resumens
- Psaphida rolandi
- Pseudeustrotia carneola
- Pyrausta generosa
- Pyrausta orphisalis
- Pyreferra pettiti
- Pyrrharctia isabella
- Raphia frater
- Rheumaptera undulata/prunivorata
- Rivula propinqualis
- Sciota vetustella
- Scoliopteryx libatrix
- Scoparia biplagialis
- Selenia kentaria
- Simyra insularis
- Smerinthus cerisyi
- Smerinthus jamaicensis
- Sphecodina abbottii
- Sphinx kalmiae
- Spilosoma congrua
- Spilosoma latipennis
- Spilosoma virginica
- Spodolepis substriataria
- Syndemis afflictana
- Tetracis cachexiata
- Tetracis crocallata
- Thyris maculata
- Trichodezia albovittata
- Xanthorhoe ferrugata
- Xanthorhoe lacustrata
- Xanthotype sospeta/urticaria
- Xestia c-nigrum/dolosa
- Zale galbanata
- Zale horrida
- Zale minerea
- Zale unilineata