1- Look at illustrations 1 and 2 by Maria Sibylla Merian.

 Ilustración coloreada que muestra todas, con detalles muy finos, las fases del ciclo de metamorfosis de la mariposa Ilustración en blanco y negro con ciclos de metamorfosis (oruga, capullo y mariposa) de varios insectos
Figure 1 Figure 2

2- Describe what you see in each one. 
3- Explain why arthropods moult during the development of the individual. 

4- Activity: Raise silkworms (Bombyx mori) that you can get from a friend. You will need mulberry leaves to feed them. Observe, draw and photograph each of the stages of the metamorphosis of this insect.