Woolly whitefly

Systematic position: Aleurodicus floccissimus belongs to the family Aleyrodidae, order Hemiptera. It is a significant pest characterized by the production of abundant white waxy filaments, which give it a fluffy or "woolly" appearance, often covering the infestation sites on the host plants.

Host plants: This species is a broad polyphage, capable of infesting a wide array of ornamental, tropical, and economic crops. Key hosts include citrus species, hibiscus, various palms, and diverse indoor or greenhouse foliage plants, which provide a stable environment for their population growth.

Biology and life cycle: The life cycle consists of the egg, nymphal stages, and adult. Eggs are typically laid on the abaxial side of the leaves, often surrounded by white waxy secretions. The nymphs feed by sucking phloem sap, and as they develop, they secrete copious amounts of honeydew and waxy material, which serves as a protective layer against environmental factors and some predators.

Damage symptoms and harmfulness: Damage is caused primarily by the depletion of plant nutrients and the production of honeydew. The accumulation of honeydew encourages the growth of sooty mold, which creates a black film over the leaves, reducing photosynthesis, hindering transpiration, and leading to leaf senescence or plant decline in severe cases.

Control measures: Management requires an integrated approach.

• Implementation of biological control using parasitoid wasps and predators.
• Use of yellow sticky cards for monitoring and mass trapping of flying adults.
• Application of systemic insecticides during active growth phases.
• Maintaining strict sanitation practices in greenhouses and nurseries to prevent initial infestations.