Pinus-strobus
Guides
Pityogenes hopkinsi
chestnut-brown bark beetle
Pityogenes hopkinsi is a small bark beetle in the family Curculionidae, commonly known as the chestnut-brown bark beetle. It colonizes eastern white pine (Pinus strobus) and uses a three-component aggregation pheromone to coordinate mass attacks on host trees. The pheromone system involves sex-specific synergistic responses and male-produced inhibitory compounds that regulate attraction.
Pityophthorus puberulus
A twig beetle in the subfamily Scolytinae, Pityophthorus puberulus is commonly associated with eastern white pine (Pinus strobus) in seed orchards. Field studies indicate it responds to the pheromone pityol, with attraction enhanced by the monoterpenes (-)-α-pinene and (-)-β-pinene. Its attraction is inhibited by S-(-)-limonene, suggesting this compound may function in host recognition and suitability assessment. The species has been documented as a bycatch in trapping programs targeting the white pine cone beetle, Conophthorus coniperda.