Abundance of <i>Rhynchophorus vulneratus</i> (Coleoptera: Dryophthoridae) and <i>Oryctes rhinoceros</i> (Coleoptera: Scarabaeidae) in Gadjah Mada University, Yogyakarta, Indonesia

Abstract Rhynchophorus vulneratus and Oryctes rhinoceros are pests that attack coconut plants in Indonesia. Information on the abundance of both pests is needed to support Integrated Pest Management in an area, including the campus area of Universitas Gadjah Mada (UGM). This research aims to study the abundance of R. vulneratus and O. rhinoceros in various habitats in the Gadjah Mada University Campus Area. The research was conducted at five points in the UGM campus area, Yogyakarta. Information on sex ratio was also studied in this research. R. vulneratus and O. rhinoceros were captured by setting aggregation pheromone traps hung on coconut plants at a height of 1.7 m above ground level. The study was conducted for one month at the beginning of the dry season. The abundance of R. vulneratus and O. rhinoceros was analyzed using the relative abundance formula. The results showed a higher abundance of O. rhinoceros than R. vulneratus . The study also showed that the sex ratio showed the dominance of females in R. vulneratus and O. rhinoceros