Chapter 4. Insect Abdomen 第四章昆虫的腹部 1234567890 11
Function Houses visceral organs gestion, excretion, reproduction t1t2t3 tilts, ttg tio----ppt ■ Structure Genitalia-mating ovp stn spr Ovipositor ■ Cercus(1l t tergum ovp=ovIpositor sensory stn=sternum ept = epiproct spr=spiracle cr = cercus(cerci) ppt= paraproct
t = tergum ovp = ovipositor stn = sternum ept = epiproct spr = spiracle cr = cercus (cerci) ppt = paraproct
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
第一节腹部的基本构造 general structure ■腹部一般由背板、腹板 和侧膜组成 腹部为什么没有侧板? regental segments genital segments postgenital segments
、生殖节 genital segments The genital opening(gonopore) is located on or behind the &th or oth sternum in female and behind the th sternum in the male ■雌性第8、9腹节,雄性第9腹节发生生殖 孔,称为生殖节 genital segments