The best pheromones are used by predators which attack and consume adult beetles on a new host as well as ovipositing on the bark of infested trees so that their larvae will be near their prey, the developing bark beetle brood. Although Furniss and Schmitz (1971) did not demonstrate that Derzdroctonus pseudotsugae pheromones attracted any […]. Welcome to WordPress. This is your first post. Edit or delete it, then start blogging! Genetic Control of Pheromone Systems. Best Pheromones Used By Predators.