prothorax

[ proh-thawr-aks, -thohr- ]

/ proʊˈθɔr æks, -ˈθoʊr- /

the anterior division of the thorax of an insect, bearing the first pair of legs.

Origin of prothorax

From New Latin, dating back to 1820–30; see origin at pro-¹, thorax

pro·tho·rac·ic

[proh-thaw-ras-ik, -thoh-] /ˌproʊ θɔˈræs ɪk, -θoʊ-/, adjective

Principal sulcus: in Orthoptera, a transverse impression of the prothorax, at or behind the middle.

Explanation of Terms Used in Entomology |John. B. Smith
Prothorax two-thirds wider than long, sides parallel in basal half, convergent anteriorly.

Journal of Entomology and Zoology, March 1917 |Various
Prozona: in Orthoptera, the upper or dorsal surface of prothorax in front of the principal sulcus.

Explanation of Terms Used in Entomology |John. B. Smith
Microthorax: a supposed thoracic ring between the head and prothorax.

Explanation of Terms Used in Entomology |John. B. Smith

There is a long neutral interval, that of the prothorax, into which it is quite useless to drive the sting.

More Hunting Wasps |J. Henri Fabre

prothorax

/ (prəʊˈθɔːræks) /

the first segment of the thorax of an insect, which bears the first pair of walking legs See also mesothorax, metathorax