The Pieris napi-complex in East Asia that comprises P. melete Ménétriés, 1857, P. dulcinea (Butler 1882), and P. nesis (Fruhstorfer 1909) has been taxonomically challenging to distinguish due to their similar appearances. In this study, P. nesis, typically found in central Japan, was discovered in the highlands on Jejudo Island, the southernmost part of the Korean Peninsula. We conducted a molecular phylogenetic analysis using mitochondrial COI gene to explore the relationship between P. dulcinea and P. nesis, and confirmed that P. nesis occurs in Korea. This paper provides the morphological characteristics of P. nesis compared to P. dulcinea, along with DNA data.

Abstract
1. INTRODUCTION
2. MATERIALS AND METHODS
3. TAXONOMIC ACCOUNTS
CRediT authorship contribution statement
Declaration of Competing Interest
ACKNOWLEDGEMENTS
REFERENCES

• Sung-Soo Kim(Research Institute for East Asian Environment and Biology, Seoul 05264, Republic of Korea)
• Da-Hee Jin(Department of Environmental Education, Mokpo National University, Muan 58554, Republic of Korea)
• Bora Shin(Department of Biology, Mokpo National University, Muan 58554, Republic of Korea)
• Chang-Gyu Park(Department of Environmental Education, Mokpo National University, Muan 58554, Republic of Korea)
• Seo-Yun Jo(Department of Environmental Education, Mokpo National University, Muan 58554, Republic of Korea)
• Sei-Woong Choi(Department of Environmental Education, Mokpo National University, Muan 58554, Republic of Korea) Corresponding author