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Insect Morphology and SystematicsInsect Morphology and Systematics
8. ALEYRODIDAE (Whiteflies)
Minute insects which superficially resemble tiny moths.
Wings are opaque and dusted with mealy white powdery wax. Wing venation is much
reduced.
Vasiform orifice is present in the last abdominal tergite. It is a conspicuous opening
provided with an operculum. Beneath the operculum there is a tongue-like organ termed
lingula. The anus opens at the base of the lingula through which honey dew is excreated
in large amount.
Immature instars are sessile, scale like, with waxy covering.
Metamorphosis approaches the homometabolus type due to the presence of a quiescent
stage prior to the emergence of adults.
e.g. Cotton whitefly
Bemisia tabaci
transmits vein clearing disease in bhendi.
Insect Morphology and Systematics
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