The genera Acesines Stål, 1876 and Dunnius Distant, 1902 (Hemiptera: Heteroptera: Pentatomidae: Pentatominae) were revised and redescribed with the description of Dunnius barpetensis Salini & Rabbani, sp. nov., based on specimens from Assam and Meghalaya, northeastern states of India. The genus Mycterizon Breddin, 1909 is reinstated from Dunnius, removed from the tribe Menidini, and redescribed. Consequently, the following new combinations are proposed: A. sordida (Kirby, 1891), comb. nov., Dunnius laticeps (Zheng & Liu, 1987), comb. nov., D. tridentatus (Xiong & Liu, 1995), comb. nov., and D. trifasciatus (Xiong & Liu, 1995), comb. nov. A lectotype is designated for Araducta bella (Distant, 1900a). Acesines bambusana Distant, 1918, and Mycterizon bellusstat. rev. are redescribed based on both male and female genitalia and Dunnius fulvescens (Dallas, 1851) is redescribed based on female genitalia.