It contains neutral mucopolysaccharides and is secreted by haemocytes. Chordotonal organs.tracheoles,and newes run to it or through it. 2.coloration The colours of adult and immature insects may be grouped into three clases. (1)pigmentary or chemical colours(色素色) (2)struchual or physical colour(结构色) (3)combination or chemico一physical colours.(混合色) (1)Pigmentary colours: These are due to chemical substances that absorb some wavelengths of the incident and reflect others. A colour patten often consists of an epidermal or subepidermal groud colour and overlying areas or more permanent alticular pigmentation. (2)Structural colours: Structural colours are changed or destroyed by physical changes in the cutide such as result from shrinkage,swelling,distortion or permeation with liquids of the same refractive index as the altied. (3)combination colours: They are produced by a structural modification in conjunotion with a layer of pigment and are much commoner than purely structural colours 3.Derivatives of integument体壁衍生物 体壁衍生物是指由皮细胞和表皮（或只有表皮）特化而成的体壁附属物， 其中包括两大类体壁外长物，皮细胞物. 教学方法：幻灯片，讲授、提问、答疑、视频、图表 本章提示： 重点理解昆虫体壁的基本构造、昆虫体壁的生理特性与药剂防治的关系 主要 1.《普通昆虫学》，彩万志，庞雄飞，花保祯，梁广文，宋敦伦编著中国农 参考资料 业出版，2001.7 2.《普通昆虫学》，牟吉元，徐洪富，荣秀兰编著，中国农业出版社， 1996It contains neutral mucopolysaccharides and is secreted by haemocytes. Chordotonal organs.tracheoles,and newes run to it or through it. 2.coloration The colours of adult and immature insects may be grouped into three clases. (1)pigmentary or chemical colours (色素色） (2)struchual or physical colour(结构色) (3)combination or chemico—physical colours.(混合色) (1)Pigmentary colours: These are due to chemical substances that absorb some wavelengths of the incident and reflect others. A colour patten often consists of an epidermal or subepidermal groud colour and overlying areas or more permanent alticular pigmentation. (2) Structural colours: Structural colours are changed or destroyed by physical changes in the cutide such as result from shrinkage,swelling,distortion or permeation with liquids of the same refractive index as the altied. (3)combination colours: They are produced by a structural modification in conjunotion with a layer of pigment and are much commoner than purely structural colours 3.Derivatives of integument体壁衍生物 体壁衍生物是指由皮细胞和表皮（或只有表皮）特化而成的体壁附属物， 其中包括两大类:体壁外长物,皮细胞物. 教学方法：幻灯片，讲授、提问、答疑、视频、图表 本章提示： 重点理解昆虫体壁的基本构造、昆虫体壁的生理特性与药剂防治的关系 主要 参考资料 1.《普通昆虫学》，彩万志，庞雄飞，花保祯，梁广文，宋敦伦编著中国农 业出版，2001.7 2.《普通昆虫学》，牟吉元，徐洪富，荣秀兰编著，中国农业出版社， 1996