What are the classes into which the phylum Arthropoda is divided? What are the three main ones and some of their representative species?
The three major classes of arthropods are: insects (cockroachs, ants, bees, flies beetles, butterflies), crustaceans (crabs, lobsters, barnacles, shrimps) and arachnids (spiders, scorpions, mites). Other classes are onychophorans (velvet worms), diplopods (millipedes) and chilopods (centipedes).