Neotermes irregularis

Systematic position. Neotermes irregularis belongs to the order Blattodea, infraorder Isoptera, and family Kalotermitidae, commonly known as drywood termites. These insects are highly specialized wood-feeders that spend their entire lifecycle inside wood substrates, rarely venturing into the open.

Affected plants. This species is a significant pest of various woody plants, including orchard trees, forest species, and ornamental plantings. It thrives in regions with warm, moderate climates, targeting both dead and living wood that has sustained structural weaknesses, injuries, or decay.

Biology and lifecycle. The colony structure follows a strict caste system consisting of workers, soldiers, and reproductive individuals. A key biological feature of Neotermes irregularis is its independence from external soil moisture. They effectively utilize metabolic water extracted from the wood they consume, allowing them to establish permanent colonies deep within tree stems or branches.

Damage and pest significance. The damage caused by these termites is internal and often remains asymptomatic for years.

• They excavate extensive gallery systems, which severely undermine the structural integrity of the timber.
• Growth vigor of infected trees declines as essential vascular tissues are compromised.
• High levels of infestation significantly increase the risk of tree snapping during strong winds.

Protection measures. Management requires early detection through periodic inspections and the use of specialized tools, such as acoustic sensors, to locate active colonies. Control strategies include the surgical removal of infested woody parts, targeted injection of systemic insecticides into gallery channels, and maintaining high plant vigor to prevent successful colonization by airborne swarmers.