Currently, 12 subspecies of Coptolabrus smaragdinus have been recorded in Korea, of which 7 subspecies are listed in South Korea. C. smaragdinus has limited movement due to degenerated hindwings, resulting in high intraspecific diversity due to geographic isolation. Previous studies have been mainly classified based on external characters or genitalia structure, but the differences between subspecies are very ambiguous. In this study, we aimed to more clearly distinguish at the subspecific classification level, by examining the male aedeagal and inflated endophallus. Additionally, we provide photos of adult, endophallus and the process of endophallus inflation.

• Myeonghwan Kim(Department of Ecological Science, Kyungpook National University, Sangju, Korea)
• Eun Young Choi(Department of Ecological Science, Kyungpook National University, Sangju, Korea)
• Jong Bong Choi(Department of Ecological Science, Kyungpook National University, Sangju, Korea)
• Taeyeong Kwon(Department of Ecological Science, Kyungpook National University, Sangju, Korea)
• Seungmin Shin(Department of Ecological Science, Kyungpook National University, Sangju, Korea)
• Gnim Sodavy(Department of Ecological Science, Kyungpook National University, Sangju, Korea)
• Jong Kyun Park(Department of Ecological Science, Kyungpook National University, Sangju, Korea, Department of Entomology, Kyungpook National University, Sangju, Korea)