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Species Catocala ultronia - Ultronia Underwing - Hodges#8857

Illinois data point - Catocala ultronia Catocala sp. - Catocala ultronia Catocala ultronia - Hodges #8857 - Catocala ultronia Underwing Moth - Catocala ultronia Catocala ultronia Catocala ultronia NMW2017 Moth #115 - Catocala ultronia Catocala - Catocala ultronia
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Noctuoidea (Owlet Moths and kin)
Family Erebidae
Subfamily Erebinae
Tribe Catocalini
Genus Catocala (Underwings)
Species ultronia (Ultronia Underwing - Hodges#8857)
Hodges Number
Other Common Names
Dark Red Underwing
Scarlet Underwing
Synonyms and other taxonomic changes
Catocala ultronia (Hübner, 1823)
* phylogenetic sequence #930841
Lafontaine & Schmidt (2010) included 101 species of the genus Catocala in America north of Mexico. (1)
Powell & Opler (2009) reported 110 species in all of North America, and about 230 worldwide. (2)
Winspan 46-63 mm
Adult: forewing pattern predominantly longitudinal (running from base to outer margin), rather than transverse (running from costa to inner margin) as in many other Catocala species; typically has dark brown to black strip along inner margin, and similar-colored subapical patch extending from outer margin to PM line or reniform spot; central longitudinal area light gray or brown, but the extent and intensity of shading varies considerably among individuals; pale brown patch usually present along costa at apex; hinding dark orangish-red, rarely pinkish or yellow, with complete black median band and wider black terminal band; small white patch at apex; antennae filiform; sexes similar

Larva: distinct black line across top of head; body gray with dense fringe of hairs along lateroventral margin above legs; prominent dorsal horn on fifth abdominal segment; oblique black line runs anteriorly from dorsal base of eighth abdominal segment
across southern Canada from Nova Scotia to eastern British Columbia, and all of eastern United States, west to Texas and Minnesota
dry woodland edges and tall shrub, especially wild cherry shrublands; urban plantations
adults fly from July through September in the north; as early as late April in the south (Texas)
larvae show a preference for members of the Rosaceae family, feeding mostly on apple and various species of cherry (Prunus spp.), but will also eat leaves of Green Ash (Fraxinus pennsylvanica), American Basswood (Tilia americana), and Bigtooth Aspen (Populus grandidentata)
Life Cycle
one generation per year; overwinters as an egg; mature larvae descend tree trunk and pupate on or in the soil under leaf litter
Print References
Covell, p. 313, plate 33#9 (3)
Internet References
pinned adult image plus common name references [Dark Red Underwing, Ultronia Underwing], description, habitat, flight season, biology, foodplants, distribution (Strickland Entomological Museum, U. of Alberta)
pinned adult image plus collection date, common name reference [Scarlet Underwing], and foodplants (Dale Clark, Texas)
adult images (Larry Line, Maryland)
presence in Florida (John Heppner, Florida State Collection of Arthropods)
distribution in Canada list of provinces (U. of Alberta, using CBIF data)
larva and adult images, life history, distribution, and flight times (Bill Oehlke)
Works Cited
1.Annotated check list of the Noctuoidea (Insecta, Lepidoptera) of North America north of Mexico.
Donald J. Lafontaine, B. Christian Schmidt. 2010. ZooKeys 40: 1–239 .
2.Moths of Western North America
Powell and Opler. 2009. UC Press.
3.Peterson Field Guides: Eastern Moths
Charles V. Covell. 1984. Houghton Mifflin Company.
4.North American Moth Photographers Group