“Out Past the Treeline” is the working title of my Small Tribes campaign. The game is based on the HeroQuest (Glorantha) rule system, with numerous modifications.
Players play bug-sized humanoids (bugkin) from tribal cultures which are tied to insect species. It is assumed that every existing, real-world insect specie has a corresponding bugkin tribe, though some are better suited for characters in a RPG.
Here are pages for the a few sample tribes. More will come soon.
Here are a couple of links to interesting insect descriptions on wikipedia. There’s a lot to work with in these species.
And here’s a link to the HeroQuest Roleplaying in Glorantha rulebook.
Here’s an image gallery for some inspiration.