What type of frass do larvae of true powderpost beetles produce?

The larvae of true powderpost beetles produce frass that resembles flour or talc. This fine, powdery frass is indicative of the wood-boring behavior of these beetles, which digest wood material as they tunnel through it. The texture and appearance of the frass are a direct result of the larvae's feeding habits, as they consume and break down the wood fibers into fine particles. This characteristic frass helps in identifying infestations, as it distinguishes powderpost beetle activity from that of other wood-destroying insects. The other types of frass mentioned are typically associated with different insect species, which produce larger, more distinct pieces or different textures based on their feeding and nesting habits.