Green longhorn beetle

Taxonomy and general description. Chloridolum thaliodes is a member of the order Coleoptera and the family Cerambycidae, commonly known as longhorn beetles. This species is recognized as a wood-boring pest that primarily affects various deciduous tree species within its native range. Its metallic green appearance is a distinctive feature of the adult stage.

Host plants. The beetle is known to infest a variety of broadleaf trees, particularly those within the Rosaceae and Fagaceae families. It poses a significant threat to citrus orchards and can also negatively impact various ornamental and native hardwood species, making it a subject of concern for both agricultural and forestry sectors.

Biology and life cycle. The life cycle of this pest is intricately linked to the host tree's wood. Adult beetles are active during the summer months, during which they mate and lay eggs within crevices in the bark. Upon hatching, the larvae tunnel into the wood, consuming the cambium and xylem, which causes severe structural damage to the tree's vascular system.

Damage and economic impact. The primary damage is caused by the larval stage, which creates winding galleries inside the tree trunk. This internal destruction disrupts nutrient and water transport, leading to canopy dieback, wilting, and eventually the death of the host tree if the infestation is severe. The presence of wood dust at the base of the trunk is a key diagnostic sign.

Control measures. Managing Chloridolum thaliodes requires an integrated approach. The most critical step is the removal and destruction of infested wood to prevent the spread of the next generation. Maintaining high tree vigor through proper irrigation and fertilization is also recommended. In high-value orchards, systemic insecticide injections and bark treatments during the adult emergence window can effectively reduce population levels.