Least Yellow Underwing
Common NameLeast Yellow Underwing
Scientific NameNoctua interjecta
FamilyNoctuidae
SubfamilyNoctuinae
Wingspan (mm)34
Wing Patterncryptic
Primary Colorsbrown, yellow, black
HabitatGrasslands, open woodlands, gardens, hedgerows
Geographic RangeEurope, North Africa, parts of Asia
Host Plantsgrasses, plantain, dock, dandelion
Flight PeriodJuly to September
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesEggs are laid on host plants, and the larvae are nocturnal feeders, hiding by day. Pupation occurs in the soil.
Identification TipsDistinguished by its relatively small size for a yellow underwing, the uniform reddish-brown and mottled appearance of the forewings, and the bright yellow hindwings with a dark band (visible in flight or when disturbed).
Description
This small moth has mottled reddish-brown forewings, often with subtle darker markings, providing excellent camouflage against bark or dry leaves. Its hindwings, typically hidden at rest, are bright yellow with a distinct dark subterminal band.
