Hello and welcome to this post, which on entomology!
I am now reading from a book called Fundamentals of Entomology by Richard J. Elzinga. It talks about different arthropods, such as the Insecta (like a grasshopper), the Crustacea (like a crayfish), the Arachnida (like a scorpion), the Chilopoda, (like a centipede), and the Diplopoda (like a millipede). Unfortunately, centipedes eat worms and slugs (that would explain some previously unexplained disappearances of my worms :(). They also can have up to 380 legs! Millipedes can have up to 750 legs though. That puts centipedes to shame, doesn't it?
There are three major arthropod groups: The Mandibulata, which are characterized by well-developed mandibles; the Chelicerata, which are defined by chelicerae utilization; and the Trilobitomorpha, known only by their fossils. Fun fact: Arthropoda means joint foot, from Latin (arthros = joint, poda = foot). Just one more thing about millipedes: They have a harder exoskeleton than most other arthropods (excluding crustaceans), so when they curl up into a tight coil, they are nearly impenetrable.
Thanks for this installation into School Stories (Where School Is ALWAYS In Session!), and I hope to see you again soon!