A Bugworld RPG has been stuck in my head. Framework: Intelligent bug societies. Athropods w/6 legs as the PCs everything else as "animals/monsters." Leaning towards making things like Dragonflies/Mantids the equivalent to Dragons(intelligent predators). Initially want to flesh this out as a #dnd5e setting then can break it out to develop my own game afterwards. I've got some excerpts written out taking place in the setting to launch worldbuilding/background. Initial thought is to keep PC races near the same sizes? Just so there isn't any sort of unbalance though there could be a limit to the PCs based on typical insect size differences? Worker v Soldier ant for example. The problem there is that you then limit cool PC races like Goliath Beetles. Though I guess there's a bit of a disconnect since it's a "fantasy" setting with sentient bugs so modifying sizes might not be such a big issue. 

If there are any to add that would make sense feel free to suggest some.      PC Races: 

Ants: Workers, Soldiers

Beetles: Goliath, Rhino, Stag, Bombardier, Ladybugs

Fleas(Small)

Houseflies

Assassin Bugs

Bees

Wasps

Hornets(Or is this too many flying, social insects?)

Butterlies

Moths

Grasshoppers

Termites