棉铃虫外生殖嚣的超微结构及其变异

本文对棉铃虫片Helicoverpa armigera(Hubner)雌雄外生殖器的一般构造和超微结构进行了较细致的研究。并与其近缘种作了比较研究。结果表明：在一般形态方面，棉铃虫种群内个体间变异较大，种群间分化较小：在雄性阳茎端囊的弯折数、大刺数及抱器瓣的长宽比等特征上与近缘种间有一定的重叠。在超微结构方面，种群内个体间、种群间均变异不大，但与近缘种间在雄性阳茎端囊刺构造上却有明显的、间断的差异，这一差异为近缘种的鉴别 提供了新的、可靠的特征。

ULTRASTRUCTURES AND VARIATIONS OF GENITALIA OF COTTON BOLLWORM IN CHINA

In this paper, the morphology and ultrastructure of genitalia of cotton bollworm Helicoverpa armigera were studied and compared with its sibling species (H. assulta and H. zea), the results indicated that: (1)In morphology, there was evident variation among individuals in the same population of cotton bollworm (CBW), but noobvious differentiation among the 17 geographic populations of CBW. The numbers of folding and large spines on vesica, and length/width of valve between CBW and its sibling species are partly overlap. (2)In ultrastructure, there was no obvious differentiation among individuals or geographic populations of CBW , but there were obvious differentiations between CBW and its sibling species in the aedeagus cornuti. The cornuti on aedeagus is a stable distinct character between CBW and its sibling species found newly by the authors.