Woolly whitefly

Definition

A species of whitefly (Aleurothrixus floccosus) in the family Aleyrodidae, recognized by the dense, woolly wax filaments secreted by its nymphs and adults that cover infested plant surfaces. Probably native to the Neotropics, it has become a widespread pest of citrus and other crops in the Nearctic, Africa, India, and Europe, where heavy infestations reduce photosynthesis and promote sooty mold growth.

Etymology

From the dense, wool-like wax secretions that obscure the insect and its host plant; "whitefly" refers to the powdery wax covering typical of the family Aleyrodidae.

Example

Citrus growers in California monitor woolly whitefly populations during summer months, as the flocculent wax produced by nymphs can blanket leaves and fruit, requiring integrated biological control with parasitoids such as Encarsia species.

Synonyms

• Aleurothrixus floccosus

Related Terms

• whitefly
• Aleyrodidae
• Encarsia
• Sooty mold
• citrus pest
• waxy secretion
• hemipteran

Usage Notes

The common name refers specifically to Aleurothrixus floccosus and should not be confused with other whitefly species that produce waxy secretions. The woolly appearance is diagnostic but can be mistaken for mealybug infestations or fungal growth by non-specialists. In agricultural contexts, the name is used interchangeably with the scientific name.