Tibiomus bebedjaensis

Tibiomus bebedjaensis is a species of weevil belonging to the family Curculionidae (order Coleoptera). As an agricultural pest, it is characterized by its specific host range, primarily targeting legumes in tropical agricultural ecosystems where it can cause localized but significant damage to cultivation.

The primary crops affected by this pest include various species of the Fabaceae family, such as peanuts and related legumes. The pest is particularly detrimental in environments where agricultural practices facilitate its reproduction, potentially leading to substantial yield losses if infestations are not properly managed during the critical growth phases of the crop.

The biological cycle of this insect involves complete metamorphosis. Adult weevils lay eggs on the surface or inside the tissues of the host plant. The larvae, which are the main destructive stage, bore into the stem or pods, consuming internal plant tissues. This hidden development phase makes it challenging to detect and treat the pest in the early stages of infestation.

The symptoms of damage are often visible as external indicators of internal structural loss:

• Holes on the surface of stems and pods created by emerging adults.
• Stunted growth and yellowing of foliage due to internal tissue disruption.
• Reduced pod filling and lower seed viability.
• Premature pod drop in heavily infested areas.

Effective management strategies require an integrated pest management (IPM) approach. This includes crop rotation to disrupt the insect's life cycle and the removal of crop residues to reduce overwintering sites. In cases of high pest pressure, the application of targeted chemical insecticides during the adult activity window is recommended to prevent significant damage to the developing pods.