Khapra beetle
The Khapra beetle (Trogoderma granarium) belongs to the family Dermestidae within the order Coleoptera. It is widely recognized as one of the most destructive quarantine pests affecting stored grain products globally, presenting a severe threat to international food security.
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Khapra beetle
This pest infests a vast range of products, including wheat, barley, rice, maize, malt, and various oilseeds. It is particularly problematic in warm, arid environments where it can multiply rapidly, attacking both raw agricultural commodities and processed food items.
Regarding biology, the Khapra beetle undergoes a life cycle that is highly adapted to storage conditions. A critical factor is the ability of its larvae to enter a state of diapause, allowing them to withstand long periods without food and survive in tiny cracks and crevices, which makes eradication extremely difficult.
The primary damage is caused by the larvae, which feed on the germ of the grain, rendering it useless for seed. Furthermore, they contaminate the grain with their shed skins and hairs, which can cause allergic reactions in humans and significantly degrade the market value of the entire batch.
Control strategies involve strict phytosanitary regulations and monitoring programs at ports and warehouses. Effective management requires deep cleaning of storage facilities, the use of high-quality storage containers, and intensive fumigation processes with approved pesticides to reach larvae hiding in inaccessible areas.