Tea thrips

Systematic position. Tea thrips (Latin: Anaphothrips theifolii) belongs to the order Thysanoptera, family Thripidae. It is a specialized pest that primarily targets plants within the genus Camellia, posing a specific threat to commercial tea production in various climatic zones.

Host plants and damage. The main host is the tea plant (Camellia sinensis). Both adults and nymphs feed on young foliage and unopened buds by piercing the epidermis and sucking the sap. This feeding behavior results in silvery discoloration, stunting of growth, leaf deformation, and, in severe cases, the drying out of apical shoots.

Biology and life cycle. The life cycle comprises egg, two larval stages, prepupa, pupa, and adult. The development rate is highly temperature-dependent, with dry, warm weather facilitating rapid population explosions. Females insert eggs into the plant tissue, ensuring that larvae have immediate access to food upon hatching.

Economic impact. The primary economic threat lies in the degradation of leaf quality, which makes the harvest unsuitable for high-grade tea production. Persistent feeding stunts the plant's development and weakens the overall health of the tea bushes, resulting in significant yield losses for growers.

Control measures. Integrated pest management (IPM) is essential for controlling Anaphothrips theifolii. Recommended practices include:

• Regular monitoring with yellow sticky traps to detect early infestations.
• Proper canopy management through pruning to optimize microclimate conditions.
• Use of selective insecticides that are safe for tea crops and pollinators.
• Conservation of natural predators, such as predatory mites and lacewings.