The dorsal section of prothorax; 1st segment of thorax
Top portion of the prothorax.
• (n.) The dorsal plate of the prothorax in insects. See Illust. of Coleoptera.
(from the article `coleopteran`) ...of the three thoracic segments (mesothorax and metathorax) are attached to the abdomen; the third (prothorax), isolated as the region between the ... ...Size and form also vary between males and females. The male marsh leafhopper Hecalus lineatus is not only a different colour than the female but ... ...
The first of three segments in the thorax of an insect that bears the first set of legs.
The dorsal surface or sclerite of the 1st thoracic segment.
The dorsal sclerite of the prothorax in insects.
Pro·no'tum noun ; plural Pronota . [ New Latin See Pro- , and Notum .] (Zoology) The dorsal plate of the prothorax in insects. See Illust. of Coleoptera . 
The dorsal plate of the prothorax.
The dorsal sclerite of the 1st thoracic segment.
a plate-like cover of the first thoracic segment.
The upper, often shield-like, hardened body-wall plate, located just behind the head of an insect.
the upper or dorsal surface of the prothorax; on the beetles this appears to be the middle segment when viewed from above
the upper (dorsal) plate of the prothorax
the top of the first segment of the thorax
the dorsal sclerite of the prothorax of an insect.