Green ceratina

Green ceratina (Ceratina viridis) belongs to the order Hymenoptera and the family Apidae. While many members of this genus are recognized as beneficial pollinators, this specific species can exhibit pest behavior by utilizing the stems of certain agricultural and ornamental plants for nesting, which leads to physical damage.

The insect typically targets plants with soft or pithy stems, such as grapevines, various berry shrubs, and certain floral species. By burrowing into the stem, the female creates a series of galleries, effectively hollowing out the interior and compromising the structural integrity of the affected plant tissues.

The biological cycle involves the female excavating a tunnel in the stem and dividing it into individual cells with partitions made of masticated plant matter. Each cell is provisioned with pollen and nectar for the developing larva. The timing of this cycle is closely linked to environmental temperature and the phenology of the host plant species.

The damage caused by this pest is primarily mechanical, interfering with nutrient and water transport within the stems. Furthermore, the presence of these hollowed-out galleries often weakens the stems, making them susceptible to wind breakage and providing an entry point for various plant pathogens, including fungi and bacteria that can cause systemic infections.

• Regular pruning and removal of dried or damaged stems.
• Proper disposal of crop residues to destroy nesting sites.
• Sealing pruning wounds with protective grafting wax or pastes.
• Monitoring plantation areas during peak activity periods.
• Maintaining healthy plant vigor through balanced fertilization.

Control measures focus on prevention and habitat management rather than chemical eradication. By limiting the accessibility of pithy stems through proper horticultural practices and maintaining a clean growing environment, farmers and gardeners can significantly reduce the potential impact of green ceratina on their crops.