The key characeristics of myriapods include:
http://animals.about.com/od/arthropods/fl/myriapods.htm
- most species have many pairs of legs
- two body sections (head and trunk)
- one pair of antennae on the head
- simple eyes
- mandibles and maxiallae
- respiratory exchange occurs through tracheal system
http://animals.about.com/od/arthropods/fl/myriapods.htm