Beet Armyworm vs Numata Longwing

Side-by-side species comparison

Attribute Beet Armyworm Numata Longwing
Scientific Name Spodoptera exigua Heliconius numata
Order Lepidoptera Lepidoptera
Family Noctuidae Nymphalidae
Size 25-30 mm wingspan 60-75 mm wingspan
Habitat Farmland Forests
Diet Herbivores Nectar Feeders
Regions Worldwide warm regions South America (Brazil, Peru, Ecuador, Colombia, Bolivia)
Conservation Not Evaluated Least Concern

Beet Armyworm

A small grayish-brown moth whose green caterpillars attack a wide range of vegetable and field crops. Larvae often skeletonize leaves before moving to fruits and growing points.

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Did You Know?

Young larvae spin fine silk threads that allow them to balloon on the wind to new host plants.

Numata Longwing

A remarkable butterfly that exists in over a dozen wing pattern forms, each mimicking a different species of toxic Melinaea butterfly. Despite their different appearances, all forms belong to the same species. Wing pattern variation is controlled by a supergene on a single chromosome.

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Did You Know?

Its wing pattern diversity is controlled by a chromosomal inversion that acts as a supergene, one of the best-studied examples of this genetic mechanism.