Albizia lac insect

The Albizia lac insect (Laccifer albizziae) is a member of the family Lacciferidae (also known as Kerriidae) within the order Hemiptera. These insects are biologically distinct due to their ability to secrete large amounts of resinous substance, known as lac, which serves as both a protective barrier and an economic resource in some regions, but acts as a significant stress factor for the host plant.

This pest specifically targets various species of trees, most notably within the Albizia genus. While it is naturally occurring in certain environments, infestations can become severe in plantations and urban landscapes, leading to stunted growth and branch dieback in affected ornamental and forest trees.

The life cycle involves an egg stage followed by a mobile crawler phase. Upon finding a suitable feeding site on a young twig or branch, the crawler settles down and starts feeding on plant sap. As the insect matures, it secretes the resinous lac, forming a hardened shell that protects the insect from environmental conditions and many natural enemies.

Damage is primarily caused by the continuous extraction of phloem sap, which weakens the host plant significantly. Furthermore, the excretion of honeydew promotes the growth of sooty mold, which covers the foliage in a dark film, effectively blocking sunlight and severely impeding the tree's photosynthetic capability.

Effective management strategies against Laccifer albizziae include:

• Regular inspections during the active crawler emergence period to time insecticide applications accurately.
• Pruning and destroying heavily infested branches to reduce the overall pest population.
• Utilizing systemic insecticides that are transported within the plant's vascular system.
• Applying horticultural oils to suffocate the insects by sealing their breathing pores.