To make a cladogram, you must first look at the animals you are studying and establish characteristics that they share and ones that are unique to each group. Note: this cladogram was created for simplicity and understanding, it does not represent the established phylogeny for insects and their relatives.
Examine the sample cladogram, each letter on the diagram points to a derived character, or something different or newer than what was seen in previous groups. Think about what the word 'innovation' means in regular language. In the past, biologists would group organisms based solely on their physical appearance. Sometimes a cladogram is called a phylogenetic tree though technically, there are minor differences between the two. What is a cladogram? It is a diagram that depicts evolutionary relationships among groups.