Spodoptera latifascia

Adults distinguished by wingspan of approximately 42 mm. Distinguished from the related South American species Spodoptera cosmioides by geographic range; S. latifascia occurs in North and Central America while S. cosmioides is restricted to South America (Argentina to Costa Rica). Larval identification requires examination of specific morphological characters: presence and pattern of black markings on abdominal segments, characteristics of subspiracular lines, and relative size of spots on first versus eighth abdominal segments.

Subtropical dry zones; agricultural landscapes with perennial and horticultural crops; semiarid tropical regions with extreme summer temperatures and prolonged drought periods; non-crop habitats including edges with grasses and areas with spontaneous vegetation.

Central America; Antilles; North America from Texas to Florida; Puerto Rico. Type locality: Jamaica.

Adults on wing from March to October depending on location.

Polyphagous larval feeding on wide variety of plant species.

Eggs laid on plastic surfaces and vegetation; neonates emerge from eggs after approximately 10 days under laboratory conditions at 25±2°C, 60±9% RH, 14:10 LD photoperiod.

Females exhibit atypical oviposition behavior, laying eggs on plastic surfaces and non-crop habitats without selectivity for host plants that support larval development. No strong migration pattern; limited flying capability of only a few kilometers per generation.

Serves as host for egg parasitoid Telenomus remus; oviposition on diverse plants and locations supports natural biological control by sustaining parasitoid populations across agricultural landscape patches.

Occasional pest of agricultural crops; larvae feed on foliage and can damage seedlings, mature plants, and pods. Subject of forensic entomology documentation—larvae have been observed scavenging dried human skin on cadavers.

• Spodoptera cosmioidesFormerly considered synonymous with S. latifascia but reinstated as valid species; distinguished by geographic distribution (South America vs. North/Central America) and larval morphology including presence of dark spot on mesothoracic segment and uninterrupted subspiracular line.
• Spodoptera eridaniaLarvae similar in appearance; distinguished by pattern of black markings on abdominal segments and characteristics of subspiracular lines.
• Spodoptera frugiperdaBoth are armyworm species with overlapping geographic range; S. frugiperda larvae distinguished by pinaculae with single stout seta forming square pattern on eighth abdominal segment and inverted white Y-shaped mark on head.

• Noctuidae
• armyworm
• pest
• forensic entomology
• polyphagous
• Central America
• North America
• Puerto Rico
• Telenomus remus
• parasitoid host

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Quick Guide to Armyworms on Soybean | Beetles In The Bush
• October | 2013 | Beetles In The Bush
• Noctuidae | Beetles In The Bush | Page 2
• Lepidoptera | Beetles In The Bush | Page 6
• Forensic Entomology is More than Just Blow Flies and Beetles
• economic pests | Beetles In The Bush
• First report of natural parasitism by Telenomus remus Nixon, 1937 on Spodoptera latifascia Walker, 1856 eggs in Puerto Rico: insights into spatial-temporal dynamics in a semiarid tropical region.