Fall webworms and webbing on terminal branches. Photo by: Brian Kunkel, Ornamentals IPM Specialist, University of Delaware.

Cicada killer adult. Photo provided by: Jessica Lawrence, NC State Entomology Department, Bugwood.org.

Cicadas captured and paralyzed by female cicada killer to provision her chambers. Photo by: Kenneth R. Law, USDA APHIS PPQ, Bugwood.org.

Clavate tortoise beetle. Photo by: David Cappaert, Michigan State University, Bugwood.org.

Thistle tortoise beetle. Photo by: David Cappaert, Michigan State University, Bugwood.org.

Thistle tortoise beetle larva. Photo by: David Cappaert, Michigan State University, Bugwood.org.

Rose midge larvae (white spots) on rose. Photo provided by: http://oregonstate.edu/dept/nurspest/rose_midge.htm.

Powdery mildew on flowering dogwood. Photo by: Mary Ann Hansen, Virginia Polytechnic Institute and State University, Bugwood.org.