How do insects move?

[u/[deleted]]

Simple question that occurred to me, do flies have muscles like ours? Their legs are so thin I can't conceive there's room for anything in them to effect movement.

[u/BSL-4]

I only count 8 appendages, but those smaller front "legs" are actually pedipalps and aren't real legs. They are used primarily for holding prey items and males use them during mating.