A Guest Lecture by Prof. Jun Yokoyama (Department Biology, Faculty of Science, Yamagata University) was organized on March 23rd, 2018. During the lecture, Prof. Yokoyama discussed his research focusing on “the Diversity and Evolution of Plant-Pollinator Interactions.” Prof, Yokoyama highlights the adaptive interaction between plants and their pollinators from the evolutionary point of view. Rina Sri Kasiamdari, Ph.D., as the Vice Dean of Academic and Student Affairs, opened the lecture by welcoming Prof. Yokoyama. Held at the Auditorium of Faculty of Biology UGM, lecturers and students attended the lecture and engaged in active discussions.