A newly recorded species, Nereiphylla hera Kato and Mawatari, 1999 which was originally described from northern Japan, was collected from East Sea in Korea. Our Korean materials of N. hera are distinguished from it congeners by the following characteristics that agree well with the original description of the species: the tentacular cirri are flat and spatulate with a narrow and distinct tip, reaching to segment 4-6, and boarder than their cirrophores; the parapodia possess elongated dorsal cirri. We provide a key for distinguishing the species of genus Nereiphylla from Korean waters.

• Hyun Ki Choi(Department of Biotechnology, Chosun University)
• Tae Won Jung(Marine Biodiversity Institute of Korea)
• Seong Myeong Yoon(Department of Biology, Chosun University) Corresponding author