There are two classes within subphylum Hexapoda. Those are Entognatha and Ectognatha, or Insecta. The latter will take a while to get through, so let's cover the former first. This one contains springtails, bristletails, and other such...

Continuing through subclass Pterygota, we will examine some other orders of flying insects. This will include termites, cockroaches, termites, fleas, and more.

Within subphylum Hexapoda there is class Insecta, and within this class there is subclass Pterygota. This clade contains all the flying insects in the world, so it will be a lot of work to describe them all. Let's start out by discussing...