1. The posterior section of the alimentary canal in insects and other arthropods, extending from the midgut to the anus.
Usage: technical; zoology; entomology

Examples

• The proctodea is the final region of the insect digestive system.
• In beetles, the proctodea absorbs water from waste material.
• The proctodea connects to the rectum and anal opening.
• Entomologists study the proctodea to understand insect physiology.
• The proctodea plays a crucial role in water conservation in desert insects.