Proboscis

Definition

An elongated, tubular structure that insects such as butterflies, moths, and some flies use to feed, typically by sucking up nectar or other fluids.

Etymology

From Greek 'proboskis', meaning 'a means of providing food', derived from 'pro-', meaning 'before' and 'boskein', meaning 'to feed'.

Example

The butterfly extended its proboscis to drink nectar from the flower.

Synonyms

• Feeding tube
• Sucking tube

Related Terms

• Nectar
• Feeding
• Ingestion

Usage Notes

The proboscis is coiled under the head when not in use and extended when the insect feeds. The structure and function can vary between different insect groups.