Mango bark beetle

Systematic position: Cryphalus mangiferae belongs to the order Coleoptera, the family Curculionidae, and the subfamily Scolytinae. It is a small but destructive bark beetle species that poses a significant threat to mango orchards worldwide, particularly in tropical regions.

Host plants: The primary host of this beetle is the mango tree (Mangifera indica). It has been observed targeting trees of all ages, from young nursery seedlings to mature, highly productive orchards, making it a major economic concern for fruit producers.

Biology and life cycle: The lifecycle of Cryphalus mangiferae is characterized by development inside the host bark. Adult females bore through the bark to create galleries for egg-laying. The resulting larvae feed on the cambium layer, creating elaborate tunnel networks that obstruct vital plant vascular systems. Multiple generations can occur within a single year if environmental conditions remain favorable.

Damage and harmfulness: The presence of the beetle is indicated by small entry holes, sap oozing, and branch dieback. By destroying the cambium, the beetle severely restricts nutrient and water flow, leading to chlorosis, stunted growth, and death of infected limbs. Extensive infestation causes trees to lose vigor, making them susceptible to secondary fungal pathogens.

Protection measures: Management of this pest requires an integrated approach. Essential practices include:

• Rigorous pruning and removal of infested wood to reduce population density.
• Maintaining optimal tree health through proper fertilization and irrigation to prevent stress.
• Monitoring pest activity using pheromone traps where available.
• Targeted application of systemic insecticides during peak infestation periods, while observing safety intervals for fruit harvest.