Bertha Armyworm Moth
Common NameBertha Armyworm Moth
Scientific NameMamestra configurata
FamilyNoctuidae
SubfamilyNoctuinae
Wingspan (mm)40
Wing Patterncryptic
Primary Colorsgrey, brown, white, black
HabitatAgricultural fields, prairies, open grasslands
Geographic RangeWestern and central North America (primarily Canada and northern US)
Host Plantscanola, flax, alfalfa, peas, mustard, various broadleaf weeds
Flight PeriodJune to August
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae, known as armyworms, are significant agricultural pests, feeding on the leaves and pods of various crops. They pupate in the soil.
Identification TipsLook for the characteristic mottled grey-brown forewings with prominent, often white-filled, reniform and orbicular spots, and a dark, wavy subterminal line. The hindwings are typically paler.
Description
A medium-sized moth with mottled grey, brown, and white forewings, featuring distinct kidney-shaped (reniform) and circular (orbicular) spots outlined in black, and wavy dark lines.
