Euryphagus lundii

Euryphagus lundii belongs to the family of longhorn beetles (Cerambycidae) within the order Coleoptera. This species is a specialized pest that causes significant damage to woody plants, primarily in the tropical and subtropical regions of Asia, including India, Southeast Asia, and China.

The host plants susceptible to this pest include various species of trees, encompassing both orchard and forest varieties. It poses a particular threat to deciduous trees by damaging the bark, cambium, and sapwood of the trunks, which leads to the weakening and eventual death of the tree.

The life cycle of Euryphagus lundii consists of the egg, larva, pupa, and adult stages. Females lay eggs in bark crevices or specially chewed notches on the trunks. The larvae perform the main destructive work; after hatching, they bore under the bark and begin to excavate branching galleries within the phloem and sapwood.

The damage manifests as a loss of plant turgor, yellowing of the leaves, and premature dieback of branches. During heavy infestations, the sap flow is disrupted, which eventually causes the entire trunk to dry out. External signs of infestation include the presence of frass (sawdust-like excrement) at the base of the trunk and around entry holes.

• Conducting regular inspections of trees for entry holes and bark damage.
• Prompt removal and destruction of infested or dead trees to prevent spread.
• Application of systemic insecticidal trunk injections to target larvae.
• Spraying bark with contact insecticides during the peak flight period of adult beetles.
• Maintaining overall tree health through adequate irrigation and fertilization to boost plant resilience.