arculus

Pronunciation: /AHR-kyoo-luhs/

Category: Anatomy

Singular: arculus

Plural: arculi

Definition

A small, nodal structure found in the wings of certain insects, particularly within the veins of dragonflies and damselflies, serving as a support point for the wing's framework.

Etymology

From Latin 'arcula', a diminutive of 'arca', meaning 'box' or 'chest'.

Example

The arculus in the wing of the dragonfly is crucial for the structural integrity during flight.

Synonyms

Wing node
Wing support

Related Terms

Vein
Dragonfly
Damselfly
Wing

Usage Notes

The arculus is a small but critical part of the insect wing structure, particularly in Odonata (dragonflies and damselflies). It helps in maintaining the stability and flexibility of the wings.