A proboscis is an elongated feeding tube attached to the head of an animal. The most well known example of a proboscis in insects is the feeding tube used by adult butterflies and moths. The proboscis is a tube made by the elongated maxillae of the butterfly, these are u-shaped and held together with hooks to form a tube.
Proboscis may also be used to describe the elongated mouthparts of flies and weevils etc.
A photograph of a Peacock butterfly showing the curled proboscis.
Photograph by Ian Dury licensed under Creative Commons.
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