Butterfly beak. Moth mouthpiece. Lepidoptera lips.
The proboscis is a defining feature of many moths and butterflies – the long, flexible mouthpiece that dips into flowers and draws out nectar.Traditionally it was thought that the butterfly tongue was a standard adaptation to feed on flowers. Newly discovered fossil evidence suggests ancestors of such animals exists before flowering plants, raising questions about what ancient butterflies and moths used their tongue-like appendages for.