Cylas formicarius is a significant quarantine pest worldwide, causing year-round outbreaks in tropical and subtropical regions. This pest is characterized by a highly cryptic nature, a high reproduction rate, and broad environmental adaptability, which makes it difficult to control. Frequent use of pesticides is not cost-effective, as it brings the accompanying effects of pesticide residues and environmental pollution. With the rapid development of green agriculture, biological control has become an important component in an integrated green management system for C. formicarius. Therefore, this paper critically reviews the research progress in insect pathogenic microorganisms, plant-based pesticides, natural enemy insects, insect sex pheromones, transgenic technology, as well as the screening, identification, and breeding of insect-resistant varieties. The aim is to provide theoretical references for the research and application of sustainable management of C. formicarius.

Insect sex pheromone receptors (PRs) are crucial for regulating mating and reproduction. In the insect olfactory perception pathway, the pheromone-binding protein (PBP) facilitates the efficient translocation of sex pheromones, enabling them to bind to PRs. PRs convert chemical signals into electrical signals, which are transmitted to the insect central nervous system to ultimately regulate reproductive behaviors. Thus, conducting functional analysis of PRs not only clarifies the molecular mechanism underlying insect mating via sex pheromone recognition and reveals the intrinsic regulatory link between sex pheromone detection and mating behavior but also provides theoretical support for the scientific understanding of the insect olfactory system. Additionally, this research lays a core theoretical foundation for the development of green pest control technologies in agriculture and forestry. This paper systematically reviews the research methods, technical principles, and advantages and disadvantages of techniques used to study insect PR genes. It summarizes representative identified PRs and their corresponding research strategies, aiming to provide a reference for future investigations into insect chemical communication and for the advancement of pest control practices.