True Armyworm Moth vs Purple Emperor

Side-by-side species comparison

Attribute True Armyworm Moth Purple Emperor
Scientific Name Mythimna unipuncta Apatura iris
Order Lepidoptera Lepidoptera
Family Noctuidae Nymphalidae
Size 35-45 mm wingspan 62-80 mm wingspan
Habitat Farmland Woodlands
Diet Omnivores Carrion Feeders
Regions North America, South America, Europe, Africa, Oceania Europe, temperate Asia, Japan
Conservation Least Concern Least Concern

True Armyworm Moth

A tawny-brown moth with a single white dot on each forewing. Its larvae march in armies across fields, devastating cereal crops.

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Did You Know?

Larvae travel in large groups across the ground like a marching army, hence the common name.

Purple Emperor

A majestic woodland butterfly whose males display an intense iridescent purple sheen visible only at certain angles. It never visits flowers, preferring carrion, dung, and tree sap.

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Did You Know?

Enthusiasts bait it down from the canopy using rotting shrimp, dirty nappies, or Stilton cheese.