Noctuidae

Definition

A family of medium-sized moths in the superfamily Noctuoidea (order Lepidoptera), commonly called owlet moths; adults are typically stout-bodied with cryptic, dull coloration and threadlike or weakly feathered antennae, while larvae—known as cutworms or armyworms—are mostly soil-dwelling or stem-boring herbivores with smooth, cylindrical bodies and five pairs of prolegs. Historically treated as the largest moth family, Noctuidae was split following molecular phylogenetic studies that transferred subfamilies such as Lymantriinae, Catocalinae, and Calpinae to the expanded family Erebidae; it now ranks as the second-largest family in Noctuoidea, comprising roughly 11,800 described species in over 1,000 genera. The family's circumscription remains unstable, with ongoing revision of its constituent subfamilies (e.g., Noctuinae, Hadeninae, Heliothinae) and their relationships to Erebidae.

Etymology

From Latin noctua ("owl") + -idae (family suffix), alluding to the common name "owlet moths."

Example

The corn earworm, Helicoverpa zea, belongs to the subfamily Heliothinae within Noctuidae and is a major agricultural pest whose larvae feed on developing kernels.

Synonyms

• owlet moths (common name)
• cutworms/ armyworms (larval forms)

Related Terms

• Noctuoidea
• Erebidae
• Lepidoptera
• Cutworm
• Armyworm
• Heliothinae
• Noctuinae

Usage Notes

The boundaries between Noctuidae and Erebidae are actively revised; older literature may place groups like underwings (Catocala) or tussock moths (Lymantriinae) in Noctuidae, whereas modern treatments assign them to Erebidae. The larval common names "cutworm" (surface-feeding, stem-cutting larvae) and "armyworm" (gregarious, migratory larvae) are applied across Noctuidae and other noctuoid families, so they are not exclusive to this family.