Individual beech blight aphid, Grylloprociphilus imbricator, showing the feathery structures attached to the abdomen. These are rapidly waved when danger is sensed. These aphids cluster in large numbers on stems of beech trees and it's quite a site when all of them are shaking their structures at the same time
Redbud leaffolder showing the loose intersegmental integument that allows for the larva to violently wiggle laterally to frighten away predators. The black and white stripes add to the dramatic display.
The conductor and his orchestra. Beech Blight Aphid, Grylloprociphilus imbricator. When danger to these insects occurs, the aphids raise up almost perpindicular to the branch and begin rapidly waving the feathery structures on their abdomens (see shot in this gallerey for closeup). A large number of apids doing this at the same time can be a frightening site to a predator or parasitoid. Because of this behavior some call this the Boogie-Woogie aphid