Biology, ecology, host range, and management approaches for Monolepta spp. (Coleoptera: Chrysomelidae), emerging threats to crops

Abstract

Monolepta signata, Monolepta hieroglyphica, and Monolepta quadriguttata are highly destructive agricultural pests in East and Southeast Asia, causing considerable economic losses by damaging a variety of crops in China, including soybeans, corn, cotton, rice, and vegetables. Despite numerous studies to prevent and control their spread, these pests continue to pose a severe agricultural issue demanding attention. This review focuses on the latest research concerning the biology, hosts, and prevention of these beetles. We also explore the biotic and abiotic factors influencing the population dynamics of these pests. While insecticides are commonly employed to manage these beetles, options for suppressing adult beetles and grubs are limited. Despite ongoing regulatory efforts, these beetles remain a significant threat to several crops, including cotton and corn. Researching the pests’ interactions with predators, parasitoids, and host plants in their ecosystem can provide valuable insights into their ecological roles and potential control methods.