Spiders are not insects.
All creatures are divided up by scientists into families and subfamilies, each with their own special name. Insects belong to the Insecta family, but spiders, along with scorpions and mites and others, belong to the family Arachnida, which is the Greek word for spider. The Greeks say that a girl called Arachne was so good at weaving that she challenged the goddess Athene to a competition and won . Athene was so furious that she changed Arachne into a spider and condemned her to weave a web spun out of her own body for the rest of time.