Dialeurodes citrifolii Morgan
Common name: cloudywinged whitefly
Diagnosis: Pupa is oval, flattened, membranous, and yellowish-green without an orange spot on the back. The pupal case is opaque after emergence of the adult and the case may collapse and lose its shape. Eggs are brown and have a hexagonal patterned surface. Adults have a "cloudy" spot near the apical portion of the front wing.
Comments: Morrill and Back (1911) estimated a $100,000 to $125,000 loss of citrus in Florida attributable to the cloudywinged whitefly. Dialeurodes citrifolii pupae are readily confused with D. citri, but citrifolii is said to be somewhat larger. I prefer a microslide to be certain of the identification. The eggs can readily be separated because D. citrifolii eggs are dark brown and have a hexagonal pattern on the surface, while D. citri eggs are lighter in color and nearly smooth. The adult of citrifolii has a "cloudy" spot near the apex of the front wing and the wing of citri is uniformly white.
Fig. 1 Dialeurodes citrifolii (Morgan). A) Adult. B) Immature stages. C) Eggs.
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Created: May 2001 | Updated: March 2006
