Abstract: 【Objective】 The structure of male genitalia of three species in Pontia Fabricuis was studied by traditional comparative morphology to provide strong support for the accurate identification and lay the foundation for the further research of speciation,population formation,and evolution.【Method】Three species of Pontia Fabricuis distributed in Xinjiang were selected for the comparative morphological study on male genitalia.These three species included Pontia edusa (Fabricuis),Pontia callidice (Hbüner) and Pontia chloridice (Hbüner). 【Result】The male genitalia in Pontia Fabricuis, especially the structures of aedeagus,tegumen,uncus,valvae and saccus were quite different among the species which can be effectively applied to the identification of the Pontia Fabricuis in Xinjiang.【Conclusion】 The difference of morphology and structure of male genitalia is obvious, which is an important basis for species identification, and provides a reference for the study of biological characteristics and ecology of butterflies.

Key words: Pontia (Fabricuis); male genitalia; comparative morphology

摘要： 【目的】通过比较形态学,研究云粉蝶属雄性外生殖器的形态结构,为该类群的准确鉴定、物种形成与演化研究提供依据,为开展蝴蝶生物学特性、生态学研究提供参考。【方法】对分布于新疆的云粉蝶属3个种即云粉蝶Pontia edusa (Fabricuis)、箭纹云粉蝶Pontia callidice (Hbüner)和绿云粉蝶Pontia chloridice (Hbüner)进行雄性外生殖器的解剖和标本制作,比较其雄性外生殖器的形态结构特征。【结果】云粉蝶属雄性外生殖器在阳茎、背兜、钩形突、抱器瓣以及囊形突等结构上存在明显的形态特化和种间差异,这些结构特征能有效应用于新疆云粉蝶属的物种鉴定【结论】编制了基于雄性外生殖器的云粉蝶属分种检索表,云粉蝶属雄性外生殖器形态结构差异明显,是物种鉴定的重要依据。

关键词: 云粉蝶属, 雄性外生殖器, 比较形态学