Costal Margin
- Pronunciation
- /KOS-tal MAR-gin/
- Category
- Anatomy
- Plural
- Costal Margins
Definition
The leading edge of the wing of an insect, particularly the anterior area where the wing attaches to the thorax.
Etymology
From Latin 'costa', meaning 'rib' or 'side', and 'margin', meaning 'edge'.
Example
The costal margins of a dragonfly's wings are reinforced to withstand the stresses of flight.
Related Terms
- Sclerites
- Exoskeleton
- Wing
- Structure
Usage Notes
Costal margins can be smooth or have various projections and spines depending on the species.