Carpophilus beetles have been observed in the flowers of some chiropterophilic columnar cacti. However, the visiting and feeding behavior of these beetles in these flowers has not been described in detail. Here, we describe for the first time the visiting and feeding behavior of Carpophilus lugubris in the flowers of Pilosocereus leucocephalus, a chiropterophilous columnar cactus, in a tropical dry forest in central Veracruz, Mexico. C. lugubris was found in 100% of the flowers examined, with a mean of 70.54 ± 9.44 beetles per flower (range: 2–267). Up to three beetles were seen in 37% of the buds examined, therefore C. lugubris can enter the flower before anthesis. C. lugubris was not observed touching the stigma during the study, suggesting that this beetle may have a limited role in pollination. The nectar of P. leucocephalus was found in the beetles’ guts, but there was no pollen, suggesting that C. lugubris consumed only nectar. The flowers of P. leucocephalus were also used as mating sites by C. lugubris.

在一些嗜嗜性柱状仙人掌的花朵中已经观察到了嗜果甲虫。但是，这些甲虫在这些花中的访问和取食行为尚未详细描述。在这里，我们首次描述了在墨西哥韦拉克鲁斯中部的热带干燥森林中，嗜盐果嗜热菌在Pilosocereus leucocephalus的花朵中的手足类柱状仙人掌的探视和取食行为。在100％的花朵中发现了C. lugubris，平均每朵花甲虫为70.54±9.44（范围：2-267）。在检查的37％的芽中最多可以看到三个甲虫，因此，在开花前，C。lugubris可以进入花中。卢氏梭菌在研究过程中未观察到触碰柱头的现象，这表明该甲虫在授粉中的作用可能有限。在甲虫的胆汁中发现了白头翁的花蜜，但没有花粉，表明卢氏梭状芽胞杆菌仅消耗花蜜。P. leucocephalus的花也被C. lugubris用作交配地点。