prothorax
- Pronunciation
- /proh-THOR-aks/
- Category
- Anatomy
- Singular
- prothorax
- Plural
- prothoraxes
Definition
The first of the three segments in the thorax of an insect, bearing the first pair of legs. It does not bear wings.
Etymology
From Greek 'pro-', meaning 'before', and 'thorax', referring to the chest or thoracic part of the body.
Example
In many beetles, the prothorax is highly modified and can be an important identification feature.
Related Terms
- Mesothorax
- Metathorax
- Thorax
- Insect anatomy
Usage Notes
The prothorax is typically the front segment of the thorax and is crucial for locomotion as it holds the first pair of legs.