篇三十八：后院山毛榉树上的风景：蚜虫

本篇离开蘑菇。请大家看看这个小东西。山毛榉树上的蚜虫 （Beech Tree Aphids）

Beech blight aphids are also known as boogie-woogie aphids because when a colony is disturbed, the nymphs lift their abdomens high in the air and thrash in unison as an apparent warning to predators. Beech blight aphids are threatened by parasites and predators.