Red Underwing
Common NameRed Underwing
Scientific NameCatocala nupta
FamilyErebidae
SubfamilyErebinae
Wingspan (mm)75
Primary Colorsgrey, red, black
HabitatWoodlands, parks, gardens, riverbanks, areas with host trees
Geographic RangeEurope, North Africa, parts of Asia; introduced to North America
Host Plantswillow, poplar, aspen
Flight PeriodJuly to October
Conservation Statusleast-concern
Lifecycle NotesEggs overwinter, hatching in spring. Larvae feed on host trees, pupating in early summer. Adults emerge in mid-to-late summer, typically having one generation per year.
Identification TipsLook for the distinctive contrast between the cryptic grey forewings and the bright red hindwings with two black bands. The hindwings are usually only visible when the moth is disturbed or in flight.
Description
A large moth characterized by its mottled grey-brown forewings that provide excellent camouflage, and vibrant red hindwings marked with a broad black median band and a narrower black terminal band.
