These large subterranean blind beetles are long and thin. Lacking any capacity for visual stimuli the giant cave beetles have adapted to the deep, permanent night underground.

Lightless Troglofauna. This species of giant beetle lives only underground, in the deepest caves where light does not shine. Their carapace is a dull white color, and they tend to reach over 4 feet in length over their thin body. They communicate via pheromones and by vibrating their thorax against the rock beneath them, which, due to their sensitive tympanal organs, they are able to hear through many hundreds of feet of stone.

Armored Hive Insect. This specific variety also have very hard carapaces, often equivalent to iron armor, that make it difficult for underground predators to bite through to damage the insect; should one fall, as well, their death releases strong pheromones that are irritating to most creatures and serve the additional purpose of warning the remaining population of a dangerous predator in their vicinity.