THE wings of insects are outgrowths of the thorax, quite independent of the limbs. The difficulty of picturing their origin in evolution is that of imagining what selective value they could have ...

Those singular shapes, insect anatomists explain, stem from the treehopper’s specially modified pronotum—a section of the thorax that in other insects resembles a small, shield-like plate.

Ants are insects. NARRATOR:'Insects have six legs and three different parts to their body. A head at the top, a thorax in the middle, and an abdomen at the end. NARRATOR:'Can you think of any ...

Insects are the most diverse class of animals, but a few physical characteristics define all insects. Insects have a segmented body with 3 regions: head, thorax, and abdomen. They have 6 legs and ...