Ironweed Stem Borer Moth
Common NameIronweed Stem Borer Moth
Scientific NamePapaipema pterisii
FamilyNoctuidae
SubfamilyNoctuinae
Wingspan (mm)32
Wing Patternspotted
Primary Colorsdark brown, reddish-brown, cream
HabitatWetlands, moist meadows, open woodlands where host plants grow
Geographic RangeEastern North America
Host PlantsIronweed (Vernonia spp.)
Flight PeriodAugust to October
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae bore into the stems of ironweed plants, feeding internally. Pupation typically occurs within the stem or in the soil near the host plant.
Identification TipsKey features include the dark brown forewings with distinct, irregular cream-white spots (especially the reniform and orbicular spots) and reddish-brown shading, along with its association with ironweed host plants.
Description
A robust, dark brown moth with forewings marked by irregular cream-white spots and reddish-brown patches, giving it a somewhat mottled appearance.
