Perlomyia mahunkai (Zwick, 1973)

(Figs. 19–24, 32)

Rhopalopsole mahunkai Zwick, 1973 — Zwick 1973a: 163. (original description of the male and female); Yoon & Aw 1986: 9. (description of the larva); Park & Choi 2012: 14 (habitus photo of the holotype).

Perlomyia mahunkai (Zwick, 1973) — Zwick 1977: 112. (comb. n.); Zhiltzova 2003: 503. (monography); Teslenko & Zhiltzova 2009: 238 (key).

Type locality. North Korea, Kanwon Province, Diamond Range, Hotel Go-song (Kangwon Province, Kosŏng-gun, Kumgang Mts., Onjong-ri, Kosŏng Stream below Hotel Go-song, N38°40’ E128°15’).

Literature data. Zwick (1973a): North Korea, Kanwon Province, Diamond Range, Hotel Go-song (Kangwon Province, Kosŏng-gun, Kumgang Mts., Onjong-ri, Kosŏng Stream below Hotel Go-song, N38°40’ E128°15’), 30.05.1970 (loc. Korea.70), leg. Sándor Mahunka, Henrik Steinmann: holotype ♂ (HNHM: PLP4412), 2♂, 3♀ paratypes (HNHM: PLP 4413), 1♂ 1♀ paratypes (NIBR - relocated from the HNHM in order of exchange in 2010); North Korea, Kengi Province, Bagyon Mts., Kaesong, at light in town (North Hwanghae Province, Kaesong, N37°58’ E126°33’), 0 6.06.1970 (loc. Korea.93), leg. Sándor Mahunka, Henrik Steinmann: 1♂ paratype (HNHM: PLP4414). Zwick (1973b): North Korea, Hamgjong-pukto Province, distr. Kjongsong (North Hamgyong Province, Kyongsong County), Onpho-ri, 0 3.06.1965, leg. M. Mroczkowski, A. Riedel: 1♀.

Yoon & Aw (1986): South Korea, Seoul, Kwanak Kwanaksan, Main Han River (Gwanak, Gwanaksan, Han River), 17.05.1985, leg. S.J. Aw: larvae; Kangwon-do, Inje Tut’asan, North Han River (Gangwon Province, Inje County, Bukhan River), 26.05.1985, leg. S.J. Aw: larvae; Chollabuk-do, Chongup, Naejangsan (North Jeolla Province, Jeongeup, Naejang-san), 0 5.05.1985, leg. S.J. Aw: larvae; Cheju-do, Pukcheju Yongsil (Jeju Province, Bukjeju County, Yeongsil), 0 8.05.1983, leg. Y.J. Bae: larvae.

Zwick (2010): South Korea, Chungbuk, Sangchon-Myeon, Dungeon-li near Doma Pass (North Chungcheong Province, Sangchon-myeon, Dunjeon-ri), 750m, 02– 26.05.2006, leg. P. Tripotin: many ♂♂, ♀♀; same data and collector, 500m: 3♀; Chungnam, Kaungsan (South Chungcheong Province, Geumsan County), Gunbuk-Myeon, Sanan-2-li, 20.04- 08.05.2005, leg. P. Tripotin: numerous ♂♂, ♀♀; (South Gyeongsang Province), Jirisan, Hamyang-gun, Macheon-Myeon, Samjeon-li, 700m, N35°20.93’ E127°38.50’, 11.04– 08.05.2004, leg. P. Tripotin: numerous ♂♂, ♀♀.

Zwick & Baumann (2011): South Korea, Busan city, Haeundae, at spring behind Garden Mansion Apts, 18.05.1987, leg. M. Whiting: 3♂, 25♀; Jeonnam Province, small village N of Suncheon City, 12.05.1987, leg. M. Whiting: 3♂, 12♀.

New material. North Korea, Kangwon Province, Kosŏng-gun, Kumgang Mts., swept in forest at Kwinyon-am Rock, N38°40’ E128°15’, 28.05.1985 (loc. Korea.956), leg. András Vojnits, Lajos Zombori: 1♂.

Diagnosis. Male: Tergum IX deeply excavated posterio-medially, tergum X with a pair of mesal knobs; apex of sternum IX long. Epiproct curved, with apex like an arrow-head; cercus short but with a basodorsal knob. Female: Sternum VII apically enlarged and with a posterio-medial hump; fused to medial sclerites of sternum VIII. Median sclerites on sternum VIII are brown, small and rectangular, longitudinally elongated; their outer posterior edges connected to large, upturned V-shaped lateral sclerites.

Distribution and ecology. This spring species was described from North Korea, later recorded also from South Korea including Jeju Island and from the southern Primorsky area of Russia (Fig. 32). This species apparently is associated with small streams.

Remarks. Paratype females from Manmul-sang Rocks (loc. Korea.68) and Mt. Bakyon (loc. Korea.112) belong to unnamed species discussed below, under the names Perlomyia sp. Ko1 and P. sp. Ko2. These were referred to as variants in text in the original description.