Cosmioides Armyworm
Common NameCosmioides Armyworm
Scientific NameSpodoptera cosmioides
FamilyNoctuidae
SubfamilyNoctuinae
Wingspan (mm)35
Wing Patterncryptic
Primary Colorsbrown, tan, grey, dark brown
HabitatAgricultural fields, grasslands, disturbed areas
Geographic RangeSouth America, Central America, occasionally southern North America
Host Plantssoybean, corn, cotton, alfalfa, various grasses and legumes
Flight PeriodYear-round in tropical regions, multiple generations
Conservation Statusleast-concern
Lifecycle NotesEggs are laid in clusters, larvae are polyphagous armyworms known for their destructive feeding, and pupation occurs in the soil. Larvae are known to march in large groups.
Identification TipsKey identification features include the specific forewing pattern, particularly the shape and coloration of the reniform and orbicular spots, and the overall mottled brown and grey appearance. Often confused with other *Spodoptera* species.
Description
A medium-sized moth with cryptic brown and tan forewings, featuring intricate darker markings, including a prominent dark reniform spot and lighter orbicular spots. The hindwings are typically plain and lighter, though not visible in this dorsal view.
