The citrus whitefly lays yellow eggs with a surface which is nearly smooth, distinguishing them from eggs of the cloudywinged whitefly which are yellow when freshly laid, but soon turn black and have a surface that is netted with a system of ridges. The identification key provided here is designed to identify the four major species of whiteflies that commonly infest citrus in Florida. Another key that covers 16 species of whiteflies that may infest Florida citrus is available on the World Wide Web. The WWW key, developed by the Florida Department of Agriculture and Consumer Services' Division of Plant Industry, uses color photographs of nymphs to assist in identification. The whitefly adult is white or white with dark spots on the wings.
Nymphs are difficult to see or identify. . . .
The whitefly adult is slate blue in color, eggs are present and laid in spirals. Nymphs are black with prominent spines. . . . . The whitefly adult is all white without any dark spots on wings. . . . . The whitefly adult is white with a darkened area at the end of each wing. Occasionally a yellow fungus is present. . . . .