True or False: Bostrichids are most common in tropical regions.

Bostrichids, commonly known as wood borers or powder-post beetles, are indeed most prevalent in tropical regions. Their life cycle and breeding patterns are heavily influenced by temperature and humidity, both of which are typically higher in tropical climates. In these warm, moist environments, Bostrichids have access to abundant food sources, such as decaying wood and plant materials, which are essential for their development.

In cooler temperate regions or arid deserts, the lack of suitable conditions—such as lower temperatures and reduced moisture—greatly diminishes their populations. While Bostrichids may occasionally be found in these areas, they are not considered common there. This climatic preference solidifies the understanding of why tropical regions serve as the primary habitat for these beetles.