Aphids. Photo by: Whitney Cranshaw, Colorado State University, Bugwood.org.

Euonymus scale infestation. Males are elongate and white. Females are gray to brown. Photo provided by: Lisa Ames, University of Georgia, Bugwood.org.

Japanese beetle adult feeding. Photo by: David Cappaert, Michigan State University, Bugwood.org.

Close-up of a Japanese beetle head. Photo by: Susan Ellis, USDA APHIS PPQ, Bugwood.org.

Azalea whitefly on azalea. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.