一、孵化 二、生长与脱皮 三、变态

一、两性生殖 Bisexual reproduction Eggs usually begin meiosis(减数分裂) only after fertilization. The meiosis of sperms have stopped before the fertilization

The number of abdominal segments: Primitively, abdomen is 11-segmented and the terminal segments are usually modified and/or diminished.原始昆虫腹部一般12节(11腹节+ 尾节) Most insects have 9 or 10 abdominal segments, but several of these are reduced

一、Development and Structure 翅的发生与构造 (一)发生 Development

一、昆虫的颈Neck supporting the head and articulating it with the prothorax cervical sclerites颈片(颈部骨片的统称) occipital sulev vrt

一、为什么口器是附肢演化来的? 二、解剖形态学证据 a)典型的昆虫口器(Chewing Mouthparts与结合纲、唇足纲头部附肢结构最相似; b)典型的昆虫口器几乎发生于所有原始的昆虫目中,如直翅目蝗虫等类群;其他类型的口器均由咀嚼式口器衍化而来

一、体制 General Body Plan Three axes of bilaterally symmetrical body -Antenna Ocellus Longitudinal, also _Prothoracic leg

一、虫古时为所有动物的总称。《说文解字》:虫.…,物之微细,或行或飞,或毛或裸或介或鳞,以虫为象.鳞、羽、裸、毛、介

一、昼夜节律与季节性 sonal rhythm Diurnal Insects日出性昆虫:蝴蝶 Nocturnal Insects夜出性昆虫:蛾子 Crepuscular Insecis弱光性昆虫:摇蚊

一、微生物(microorganisms): 概念:一群肉眼看不见的微小生物,包括:细菌螺旋体、立克次体、衣原体、支原体、放线菌(原核)、病毒(非细胞)、真菌(真核)。原核与真核细胞的区别:细胞核的区别