posterior eyes

Definition

The eyes located towards the rear of the head in spiders, often used for detecting motion and light due to their position.

Etymology

From Latin 'posterior', meaning 'coming after' or 'behind', and 'oculus', meaning 'eye'.

Example

The posterior eyes of a jumping spider are less developed for detailed vision but are sensitive to movements behind them.

Synonyms

• Rear eyes
• Back eyes

Related Terms

• Anterior eyes
• Ocelli
• Spider vision
• Eyes

Usage Notes

Posterior eyes are typically smaller and less complex than anterior eyes but play an important role in the spider's overall sensory system.