- Large, striking pug with three brown/black straight bands on pale background
- Wing shape and posture distinctive
- Extemely restricted range and habitat requirements - unlikely to be encountered elsewhere (or without specific searches
Habitat: Coastal salt marsh where foodplant (Sea Wormwood) occurs.
Range: Restricted to north-west Norfolk and north-east Lincolnshire. Formerly (?) also colonies in Essex and Yorkshire.
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