Rosy Underwing vs Common Bagworm Moth

Side-by-side species comparison

Attribute Rosy Underwing Common Bagworm Moth
Scientific Name Catocala electa Psyche casta
Order Lepidoptera Lepidoptera
Family Erebidae Psychidae
Size 65-80 mm wingspan Males 12-15 mm wingspan; females wingless
Habitat Rivers & Streams Underground
Diet Predators Wood Feeders
Regions Central and southern Europe, temperate Asia Europe
Conservation Least Concern Least Concern

Rosy Underwing

A large moth with camouflaged grey-brown forewings hiding vivid rosy-pink and black hindwings. When disturbed, the flash of pink confuses predators as it drops from its perch.

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Did You Know?

Like all underwing moths, it uses a startle display, flashing its bright hindwings then vanishing as it re-covers them.

Common Bagworm Moth

A small moth whose larva builds a distinctive portable bag from silk and plant debris that it carries everywhere. Adult females are wingless and never leave their larval bag.

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Did You Know?

The wingless female mates, lays eggs, and dies entirely within the bag she built as a caterpillar.