1. the middle segment of the thorax in insects, bearing the second pair of legs and the first pair of wings
Usage: entomology

Examples

• The mesothorax of the beetle contains powerful flight muscles.
• Entomologists examine the mesothorax to identify wing attachment points.
• The mesothorax is located between the prothorax and metathorax.
• In butterflies, the mesothorax supports the forewings.
• The second pair of legs emerges from the mesothorax.
• Researchers studied the mesothorax structure in various insect species.