 To get to maturity, adults feed on the bark and phloem of seedlings and young conifers, but sometimes also deciduous trees, causing severe growth loss, stem deformities and increased mortality.Thus, in the years following the clearing of plots and planting of new seedlings, adults that hatch in large numbers may cause a plague.The large pine weevils have a tendency to attack artificially fertilized trees, especially those fertilized with phosphorus which causes greater nutritional quality of phloem for the weevils or make faster more attractive plants for the weevils due to faster growing.