Due to its ancient origin in the Permian and the high proportion of beetle-pollinated taxa within ancestral magnoliid lineages, it has been hypothesized that beetles were among the first floral visitors of the proto-angiosperms on Earth. Thus, beetle-pollinated flowers have become important model systems essential for the study of the origin and evolution of angiosperms. Under an evolutionary perspective, in this review we synthesize what is currently known about beetles as floral visitors in the family Magnoliaceae, one of the earliest extant groups of flowering plants. Nitidulidae and Scarabaeidae are the two most common groups of beetles reported in the literature as floral visitors to Magnoliaceae; however, the evidence indicates that most modern families of beetles including all the families with known taxa associated with Magnoliaceae had already originated when the latter first appeared by the end of the early Cretaceous. Hence, Magnoliaceae could have represented a newly opened ecological niche that beetles gradually colonized and exploited, possibly shifting from gymnosperm hosts. By feeding, mating and sheltering in their flower structures, beetles have played a major role in shaping the floral biology and morphology of Magnoliaceae. Protogyny, thermogenesis, floral odors and floral movements are traits that could have evolved in response to selection pressures imposed by beetles. Further studies should assess the possible role of anthophagous scarabs (subfamilies Cetoniinae, Melolonthinae, Dynastinae and Rutelinae) in the diversification of Magnoliaceae, since this event broadly coincides with the origin of those groups of beetles in the Eocene, some of which exhibit very close associations with several Magnoliaceae species.

由于其起源于二叠纪，并且在原始的木兰属谱系中甲虫授粉的类群比例很高，因此可以推测，甲虫是地球上原角类动物的第一批花卉访客。因此，甲虫授粉的花已成为重要的模型系统，对于研究被子植物的起源和进化至关重要。从进化的角度来看，在这篇综述中，我们综合了目前已知的关于甲虫作为木兰科（现存最早的开花植物群之一）中的花卉访客的信息。在文献中，作为昆虫的木兰科植物，香菇科和金龟子科是两个最常见的甲虫科。然而，证据表明，大多数现代甲虫家族，包括所有与木兰科相关的已知分类单元的甲虫家族，都已起源于早在白垩纪末期出现的甲虫家族。因此，木兰科可能代表了一个新开放的生态位，它逐渐被甲壳虫定殖和开发，可能是由裸子植物寄主转移而来的。通过进食，交配和遮蔽其花朵结构，甲虫在塑造木兰科的花卉生物学和形态学方面发挥了重要作用。原虫，生热，花的气味和花的运动是响应由甲虫施加的选择压力而可能进化的特征。进一步的研究应评估食虫性金龟子的可能作用（亚纲Cetoniinae，Melolonthinae，