A thud bug, having its origin in the sparkbee The Yuuzhan Vong utilized creatures called Sparkbees. These originated as a bee species indigenous to Yuuzhan'tar. Sparkbees served as the foundational blueprint for various projectile biots, which ultimately manifested as the Thud, Razor, Snap, and Blast bugs. Furthermore, Sparkbees were maintained in their original, unaltered state because their honey was highly prized as a culinary treat. Nevertheless, their numbers were meticulously regulated due to the honey's flammable nature, posing a significant hazard to Vonduun crab armor in particular.