二、胸部的基本构造 The thorax, is composed of three segments prothro前胸 mesothorax中胸 metathora后胸 In most winged insects, mesothorax and metathorax form a pterothoray bearing the wings The thorax is the center of locomotory Legs: fore, mid, and hind leg Wings:前翅 Drewing、后翅 时 hindwings