·Propodeum并胸腹节 The posterior portion of the thorax,which is actually the first abdominal segment united with the thorax. a dorsal area on thorax behind metanotum,actually the first abdominal segment,in apocritous Hymenoptera 细腰亚目原生第1腹节向前延伸，并入后胸，称为并胸腹 节，其上有1对气门 the second abdominal segment is often narrowed to form a slender waist or petiole. 细腰亚目第2腹节基部缩小，有的甚至呈细腰状，称为腹 柄 产卵器 the ovipositor is usually well developed,但着生位置 不同 Propodeum并胸腹节 The posterior portion of the thorax, which is actually the first abdominal segment united with the thorax. a dorsal area on thorax behind metanotum, actually the first abdominal segment, in apocritous Hymenoptera 细腰亚目原生第1腹节向前延伸，并入后胸，称为并胸腹 节，其上有1对气门 the second abdominal segment is often narrowed to form a slender waist or petiole. 细腰亚目第2腹节基部缩小，有的甚至呈细腰状，称为腹 柄  产卵器 the ovipositor is usually well developed，但着生位置 不同