Cadelle beetle

The Cadelle beetle (Tenebroides mauritanicus) is a member of the Trogositidae family and is widely recognized as a serious pest of stored products. It is frequently found in grain elevators, flour mills, and warehouses globally, posing a significant risk to stored food supplies.

This beetle is known for its wide host range. It infests various grains such as wheat, corn, rice, and barley, as well as processed goods like flour, nuts, and dried fruits. Beyond food contamination, adult beetles and larvae are known to bore into wooden packaging and warehouse structures.

The life cycle of the Cadelle beetle is relatively slow compared to other stored product pests. Females lay clusters of eggs in cracks or crevices near food sources. Larvae are distinctively active and display predatory behavior, often feeding on other insects found within the infested grain mass.

The damage caused by the Cadelle beetle is severe. Larvae and adults typically target the germ of the grain, rendering it useless for seed purposes. Because of their ability to chew through packaging and wooden structures, they can easily spread infestation throughout an entire milling facility.

Effective management requires an integrated pest management (IPM) approach. The primary focus should be on sanitation to remove food sources and potential breeding sites. Key strategies include:

• Rigorous cleaning of grain-handling equipment and storage areas.
• Maintaining low grain moisture levels to discourage insect reproduction.
• Utilizing professional fumigation with phosphine for heavy infestations.
• Implementing regular inspections using traps to detect population spikes early.