The subgenus Oropeza Needham, 1908 (Diptera: Tipulidae: Dolichopeza) comprises 27 described species distributed across the Holarctic region. Certain Oropeza species have been reported in neighboring countries of the Korean Peninsula―6 species in Japan, 3 species in China, and 4 species in Russia. Some researchers, such as Byers (1961) and Savchenko (1983), suggested that the distribution of Oropeza cover the East-Palearctic regions, including the entirety of the Korean Peninsula. However, previous records of Oropeza from the Korean Peninsula have not been accepted because of the lack of comprehensive species-level investigations in this region. In this study, we present a new record of the species Dolichopeza (Oropeza) satsuma (Alexander, 1918) in South Korea, with redescription and photographs: general habitus, wing veins, and male genitalia. This finding marks the rediscovery of the subgenus Oropeza in the Korean Peninsula.

• Jinsoo Kim(School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea, Comparative Medicine Disease Research Center, Seoul National University, Seoul 08826, Republic of Korea)
• Jisoo Kim(Diversity Conservation Research Department, Nakdonggang National Institute of Biological Resources, Sangju, Gyeongsangbuk-do 37242, Republic of Korea)
• Sangjin Han(School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea, Comparative Medicine Disease Research Center, Seoul National University, Seoul 08826, Republic of Korea)
• Seunggwan Shin(School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea, Comparative Medicine Disease Research Center, Seoul National University, Seoul 08826, Republic of Korea)