The estimate of 5.5 million species of insects is interesting. What’s even more remarkable is that because scientists have ...

An insect is a small creature with three body parts (head, thorax and abdomen) and three pairs of legs. Many have wings. Most of them undergo complete changes of shape during their lifecycles.

A team of biologists in Montana and Germany has found that, regardless of type, those insects that express a protective stick- or leaf-like appearance all evolved the same basic body parts.