捕食性颏花金龟口器形态的适应进化及功能研究（鞘翅目：金龟科：花金龟亚科）
Adaptive evolution and functional analysis of the mouthparts in predatory flower chafers (Coleoptera: Scarabaeidae: Cetoniinae: Cremastocheilini)
李莎，白明，王心丽，杨星科
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作者单位：（中国农业大学，中国科学院动物研究所），中国科学院动物研究所，中国农业大学，中国科学院动物研究所
中文关键词：花金龟亚科，颏花金龟族，口器，捕食性
英文关键词：Cetoniinae, Cremastocheilini, mouthparts, predaceous
中文摘要：颏花金龟为捕食性，是花金龟亚科12族中食性最为特殊的类群，以其下唇的前颏极度扩大而得名。依据捕食对象及对应形态变异类型的不同，其可分为蚁食性和蚜食性两类。由于颏花金龟的食性异于其他种类花金龟的植食性，栖息环境也有极大的不同，故其口器适应进化出诸多形态类型。通过比较颏花金龟、花金龟亚科其他种类、其他植食性金龟（丽金龟和犀金龟两个亚科为代表）以及典型肉食性甲虫口器的形态，对颏花金龟口器特殊结构及功能进行了分析，并初步探索了取食机制及颏花金龟的生存策略。
英文摘要：The tribe Cremastocheilini is the most special group among all 12 tribes in Cetoniinae (Coleoptera: Scarabaeidae), which is named in the extremely expand permentum. Cremastocheilini is predaceous. According to the different types of feeding habit and morphological variation, the tribe can be divided into ants-feeding habits and aphids-feeding habits. There are great differences in the morphology of mouthparts between Cremastocheilini species and the herbivorous cetoniins. In this paper, we compared the mouthparts of the beetles from Cremastocheilini, other tribes of Cetoniinae, Rutelinae, Dynastinae and typical carnivorous beetles. The special structure and function of the mouthparts were analyzed, and the survival strategy of the feeding mechanism was discussed preliminarily.