Instructional Video5:05
Professor Dave Explains

Class Entognatha and the Organization of Class Insecta

9th - Higher Ed
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...