Opusc. Zool. Budapest, 2018, 49(2): 99–139 On the Trichoptera of Korea with Eastern Palaearctic relatives 1 2 3 4 J. OLÁH , K.A. JOHANSON , W. LI & S.J. PARK 1János Oláh, Residence postal address: Tarján u. 28, H-4032 Debrecen, Hungary E-mail:
[email protected] 2Kjell Arne Johanson, Swedish Museum of Natural History, Department of Zoology, Box 50007, SE-10405 Stockholm, Sweden. E-mail:
[email protected] 3Weihai Li, Department of Plant Protection, Henan Institute of Science and Technology, Xinxiang 453003, China. E-mail:
[email protected] 4Sun Jin Park, Department of Life Science, Kyonggi University, Suwon 16227, Korea. E-mail:
[email protected] Abstract. The caddisfly materials collected by Hungarian zoologists during 25 collecting trips between the years of 1970 and 2016 in the Korean Peninsula was identified and compared when required with Eastern Palaearctic relatives. The appen- dicular genital terminology was adopted and applied to several representatives of Polyphorae taxa. We identified 95 caddisfly species, including 5 new records for the Korean Peninsula: Tinodes higashiyamanus Tsuda, 1942, Apatania yenchingensis Ulmer, 1932, Neophylax relictus (Martynov, 1935), Limnephilus quadratus Martynov, 1914, and Hydatophylax soldatovi (Martynov, 1914). We have described the following 12 species new to science: Plectrocnemia ussurica Oláh & Johanson sp. nov. (Russia); Psychomyia tompa Oláh & Johanson sp. nov. (Russia); Psychomyia vandor Oláh & Johanson sp. nov. (Russia); Agapetus vastag Oláh & Johanson sp. nov. (Russia); Agapetus vekon Oláh & Johanson sp. nov. (Russia); Neophylax goguriensis Oláh & Park sp. nov. (North Korea); Neophylax sillensis Park & Oláh sp. nov. (South Korea); Dicosmoecus coreanus Oláh & Park sp. nov. (South Korea); Dicosmoecus juliarum Oláh sp.