Apricot buprestid

Systematic position: The apricot buprestid (Sphenoptera foveola) belongs to the order Coleoptera and the family Buprestidae (jewel beetles). This species is a highly specialized wood-boring pest that poses a significant threat to stone fruit orchards, particularly in arid and semi-arid regions where these trees are widely cultivated.

Host plants: The primary hosts for this pest are apricot, peach, plum, and almond trees. While it prefers weakened or stressed plants, healthy trees are also susceptible under high pest pressure. The beetle's ability to thrive in various stone fruit species makes it a persistent challenge for commercial fruit growers.

Biology and life cycle: The insect typically completes its life cycle within the host tree's woody tissues. Larvae overwinter inside the galleries they have constructed within the branches or trunks. In the spring, they pupate, and adult beetles emerge from late spring to early summer. After mating, females lay eggs in bark crevices, and the newly hatched larvae begin tunneling into the cambium layer.

Damage and economic impact: The damage caused by the larvae is severe. By boring into the bark and sapwood, they disrupt the transport of nutrients and water throughout the tree, leading to branch dieback, leaf chlorosis, and eventually the death of the entire tree if the infestation is heavy. Typical signs of the pest include exit holes that are oval or D-shaped and the accumulation of sawdust around the tree base.

Protection measures: Integrated pest management (IPM) is essential for controlling this buprestid.

• Regular pruning and removal of infested wood to reduce local populations.
• Maintaining tree vigor through proper irrigation and fertilization.
• Applying chemical insecticides during the adult emergence period to target beetles before they deposit eggs.
• Monitoring bark health regularly during the active growing season.