The respiratory system of most insects and spiders is called the system.
spiracle
tracheal
airflow
arthropod

tracheal

The respiratory system for most species is different. Some have a specialized function of serving fully developed organs such as the lungs, others have spiracle, other animals have undeveloped respiratory organs.
However in most insects such as the spider they have the tracheal system.
In sharks they have the spiracle.
In birds they have the one-way respiratory system.