Titanomyrma is one of the smaller creatures on the island; A frightening thought, when you realize it is the size of a dog. A hive-minded herbivore, Titanomyrma usually goes about it's business unless provoked. When attacked or threatened, it releases a chemical which alerts all Titanomyrma in a large range to help fight the aggressor.
Because of its hive mentality, I've not seen any successfully tamed Titanomyrma on the island yet. Fortunately for lone survivors, separated Titanomyrma can be easily picked off for a small supply of Chitin among other valuable natural resources.
I've seen two varieties of Titanomyrma: Drones and soldiers. Drones are smaller, faster and land-bound, and they harvest for the hive. Soldiers are larger, slower and have wings; They defend the hive. If Titanomyrma is akin to other hive-insects, there must be Queens too, but I've yet to encounter such a variant.