 The abstract background of ectropis grisescens, geometridi, lepidoptera, is one of the most destructive defoliators in tea plantations in China. The MAPK cascade is known to be an evolutionally conserved signalling module, acting as pivotal cause of host pathogen interactions. Although the chromosome level referenced genome of E. Grisescens was published, the whole MAPK cascade gene family has not been fully identified yet, especially the expression patterns of MAPK cascade gene family members upon an ecological biopesticide, meterozyma and isoplye, remain to be understood. In this study, we have identified 19 MAPK cascade gene family members in E. Grisescens, including 5 MAPKs, for MAP2KS, 8 MAP3KS, and 2 MAP4KS. The molecular evolution characteristics of the whole E. G. MAPK cascade gene family, including gene structures, protein structural organization, chromosomal localization, orthologs construction, and gene duplication, were systematically investigated. Our results showed this article was offered by Xiaozhou Wu, Chenghua Zhu, Xiaofan Li, and others. We are article.tv, links in the description below.