Cockroaches also have hard shells, and are invulnerable to poison. Spiders can attack multiple enemies. And so on. Other bugs can jump. There are also jumping spiders.
Many bugs can fly.
Bees have long range and a rather powerful sting, and are great bombers. Mosquitos are fast but flimsy on defense. Wasps are VERY powerful fighters and not bad fliers. Some bugs can swim. Water bugs can swim FAST but they're not much good at fighting.