Was a larger version of Chitin I: The Harvest Wars ever released?
From my own research, it appears that a larger game based on the Hymenoptera universe was planned. There were a range of Chitin 25mm miniatures in the prototyping stage when Martian Metals was destroyed in a fire, pushing the release back. As Metagaming itself unfortunately went out of business a few years later, the larger game was never released.

Source: http://theminiaturespage.com/boards/msg.mv?id=99895