Anggraini, E., Hizati, S. N., Alia, R., Sari, V. L., & Sari, I. P., Danata, N. H. (2025). Effectiveness of Yellow Sticky Traps and Attractants in Controlling Pest Populations on Chili Peppers. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-13 Tahun 2025, Palembang 20 Oktober 2025. (pp. x–y). Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Fruit flies of the Bactrocera spp. are a major pest of chili plants (Capsicum annuum L.), causing a decline in the quality and quantity of harvest yields. Environmentally friendly control is necessary because excessive use of chemical pesticides can lead to pest resistance, reduce natural enemy populations, and pollute the environment. This research aimed to determine the effectiveness of combining yellow sticky traps and attractants in reducing fruit fly populations. The research was conducted on chili fields using a Randomized Block Design (RBD) with two treatments: yellow sticky traps coated with glumon glue and methyl eugenol attractant, each replicated four times. The results show that the yellow sticky trap is capable of capturing four orders and eight species of insects, with Bactrocera dorsalis being the most abundant species. The trap only caught two species, namely B. dorsalis and B. umbrosa. The diversity index value on the yellow sticky trap (0.27–0.71) was higher than that of the attractant (0.01–0.28), while the dominance index was higher on the attractant (0.93–0.99). Species evenness was low in both treatments, but the yellow sticky trap showed a more even distribution of individuals. The combination of both traps effectively suppressed the fruit fly population, with the attractant being more specific and the yellow sticky trap showing diversity in other insects, potentially making it an environmentally friendly control strategy without harmful chemical residues.