Myristica underwing Kons & Borth, 2015 Catocala nebulosa – clouded underwing Catocala neogama – the bride (including C. euphemia) Catocala nuptialis – married underwing Catocala obscura – obscure underwing Catocala ophelia Catocala orba – Orba underwing Catocala palaeogama – old wife underwing (sometimes in C. neogama) Catocala parta – mother underwing Catocala piatrix – penitent underwing Catocala praeclara – praeclara underwing Catocala pretiosa – precious underwing (formerly in C. crataegi) Catocala pretiosa texarkana – Texarkana underwing Catocala relicta – the relict, "white underwing" Catocala residua – residua underwing Catocala retecta – yellow-gray underwing Catocala (retecta) luctuosa – yellow-fringed underwing Catocala robinsoni – Robinson's underwing Catocala sappho – Sappho underwing Catocala semirelicta – semirelict underwing (including C. nevadensis, C. pura) Catocala serena – serene underwing Catocala similis – similar underwing Catocala sordida – sordid underwing Catocala subnata – youthful underwing Catocala texanae – Texan underwing Catocala ulalume – Ulalume underwing Catocala ultronia – dark red underwing, ultronia underwing Catocala umbrosa Catocala unijuga – once-married underwing Catocala verrilliana – Verrill's underwing Catocala vidua – widow underwing Catocala violenta Catocala whitneyi – Whitney's underwing Comparison of North American species Other "underwing moths" As noted in the introduction, some species besides the Catocala species are also commonly known as "underwings". Typically however, the name is used with a qualifier, such as a color term, in these cases. Non-Catocala "underwing moths" are typically owlet moths, namely: Subfamily Catocalinae Beautiful yellow underwing (Anarta myrtilli) Brown underwing (Minucia lunaris) Locust underwing (Euparthenos nubilis) (European) white underwing (Catephia alchymista) – in North America, "white underwing" typically refers to Catocala relicta Subfamily Amphipyrinae Copper underwing (Amphipyra pyramidea) Svensson's copper underwing (Amphipyra berbera) Subfamily Erebinae False underwing moth (Allotria elonympha) Subfamily Hadeninae Black underwing (Mormo maura) Blossom underwing (Orthosia miniosa) Broad-bordered white underwing (Hadula melanopa) Guernsey underwing (Polyphaenis sericata) Lunar underwing (Omphaloscelis lunosa) Small dark yellow underwing (Coranarta cordigera) Small yellow underwing (Panemeria tenebrata) Straw underwing (Thalpophila matura) Subfamily Noctuinae Pearly underwing (Peridroma saucia) Yellow underwings proper, some 15 species in the genus Noctua However, the "orange underwings" are two species of genus Archiearis of the geometer moth family (Geometridae): Orange underwing (Archiearis parthenias) Light orange underwing (Archiearis notha) Footnotes References Fauna Europaea (FE) (2011): Catocala. Version 2.4, January 27, 2011. Retrieved March 29, 2012. Nelson, John M. & Loy, Peter W. (1983): The Underwing Moths (Lepidoptera: Noctuidae) of Oklahoma. Proceedings of the Oklahoma Academy of Science 63: 60–67. PDF