Rhyacophila vicina Botosaneanu 1970

(Figs 3, 7, 9)

Rhyacophila vicina Botosaneanu 1970, 287–288, 327, plate VII figs 1–6, male, female.

Rhyacophila jirisana Kobayashi, 1989, 4, 6, figs 3A, 3B, male. Synonymized by Nozaki et al. (2019).

Adult. Forewings each 8.5–10.0 mm in male (n = 12), 8.5–10.0 mm in female (n = 8). Ratio of width of eye to distance between eyes 0.25–0.31 in male (n = 12), 0.26–0.31 in female (n = 8).

Specimens examined. KOREA: 2 males, 1 female, Kangrimchon, Chiaksan National Park, Pugok-ri, Hoengsong-gun, Gangwon-do, 19.v.2000, T. Nozaki (net sweeping) (TN); 2 males, Jomurak Valley, Gapyeong-gun, Gyeonggi-do, alt. 410 m, 2.vi.2014, T. Nozaki (net sweeping) (TN); 2 males, 1 female, Myeonji Mt. Valley, Gapyeong-gun, Gyeonggi-do, alt. 269 m, 2.vi.2014, T. Nozaki (net sweeping); 1 male, 1 female, Myeonji Mt. Valley, Gapyeong-gun, Gyeonggi-do, alt. 250 m, 3.vi.2014, T. Nozaki (light trap) (TN); 5 males, 5 females, Gwangchi Valley, Gaojak-ri, Yanggu-gun, Gangwon-do, 26.v.2015, MS. Kang (net sweeping) (SJP); 4 males, Sambong National Recreation Forest, Gwangwon-ri, Nae-myeon, Hongcheon-gun, Gangwon-do, 14.v.2018, MS. Kang (net sweeping) (SJP); Choamsa Temple, Jukgyegugok Valley, Baejeom-ri, Sunheung-myeon, Yeongju-si, Gyeongsangbuk-do, 1.vi.2013, MS. Kang (net sweeping) (SJP).

Distribution. The Korean Peninsula (South Korea and North Korea), Russia (South Primorye), China (Liaoning).