Several species of insects are present all over the universe. But insects present all over the world are classified into two main groups. They are wingless (Apterygota) and winged ones (Pterygota).
Archaeognatha and Thysanura are the two orders that make up the Apterygota. Where Archaeognatha makes a single monocondylia, where as Thysanura and Pterygota are grouped together to form Dicondylia.
Paleoptera and Neoptera are the two orders that make up the winged order Pterygota. This group of insects folds their wings flat over the abdomen. Further Neoptera is divided into Hemimetabolous and Holometabolous groups.
Insects can be organized into thirty different orders. But for identify the most similar ones they are classified into the following ten groups. Below are the most common insects orders listed in an orderly manner.