Cyana quadripartita vieta Volynkin & Černý, ssp. nov. (Figs. 21–24, 35, 36, 44, 46) Type material. Holotype (Figs. 21, 35): ♂, Vietnam, Prov. Vinh Phu, Tam Dao, 60 km NW Hanoi, 950–1200 m, 23°34’N, 105°20’E, VI.1994, Sinajev V. & Simonov leg. / Museum Witt München, slide ZSM Arct. 141/2017 ♂ Volynkin (Coll. MWM/ ZSM). Paratypes: 16 ♂, 1 ♀, same data as in the holotype, slide MWM 33516 (♀) Volynkin (Coll. MWM/ ZSM); 5 ♂, 5 ♀, North Vietnam, Tam Dao, 60 km NW Hanoi, 950 m (21.34’N 105.20’E), 17.X.1994, leg. V. Sinjaev, slides ZSM Arct. 140/2017 ♂, MWM 33512 (♂) Volynkin (Coll. MWM/ZSM); 32 ♂, 8 ♀, same locality, but 1–5.V.1993, leg. Sinjaev & Simonov (Coll. MWM/ ZSM); 5 ♂, 4 ♀, Tam Dao, 60 km NW Hanoi, 21.34’N 105.20’E, 1200 m 1– 15.XI.1992, secondary forest, leg. V. Sinajev & Simonov, ex coll. Schintlmeister, slide ZSM Arct. 142/2017 ♀ Volynkin (Coll. MWM/ZSM); 2 ♂, N Vietnam, Tam Dao, 60 km NW Hanoi, 21.34’N 105.20’E, 950 m, 17.X.1995, leg. V. Sinjaev, ex coll. A. Schintlmeister (Coll. MWM/ ZSM); 1 ♂, Vietnam: Tam Dao, 900 m, 23.VII.1986, leg. J. Razowski (Coll. MWM/ ZSM); 1 ♂, same locality and collector, but 25.VII.1986 (Coll. MWM/ ZSM); 1 ♀, same locality and collector, but 27.VII.1986 (Coll. MWM/ ZSM); 1 ♂, same locality and collector, but VI.1986 (Coll. MWM/ ZSM); 9 ♀, N Vietnam, 900 m, Tam Dao, VI.1986, 75 km N Hanoi, lg. J. Razowski (Coll. MWM/ ZSM); 1 ♂, North Vietnam, Province Vinh Phuc, Tam Dao, 1000 m, 22–24.IX.2003, leg. Binh / coll. S. Löffler (Coll. MWM/ ZSM); 4 ♀, Vietnam, Prov. Vinh Phu, Tam Dao, 60 km NW Hanoi, 950–1200 m, 21.34’N 105.20’E, VI.1994, Sinjaev V. & Simonov leg. (Coll. MWM/ ZSM); 1 ♂, N Vietnam, 1600 m, Mt. Fan-Si-Pan (North), Cha- pa, secondary forest, 22.17’N, 103.44’E, 25–30.III.1995, leg. V. Sinjaev & A. Schintlmeister (Coll. MWM/ ZSM); 1 ♂, 1 ♀, N Vietnam, Cuc Phuong, 60 km SW Hanoi, 20.15’N, 105.20’E, 18.XI.–3.XII. 1992, 400 m, leg. Sinajev & Simonov, ex coll. Schintlmeister, (Coll. MWM/ ZSM); 1 ♀, N Vietnam, Fan-si-pan, Cha-pa, 22.15’N, 103.46’E, 8–29.V.1993, 1700 m NN, leg. Sinajev & Simonov, ex coll. Schintlmeister, (Coll. MWM/ ZSM); 1 ♂, S [Central] Vietnam, Kon Tum province, Dac Glei, 15°07’N 107°42’E, H= 700m, 8.VIII.1996, leg. Siniaev & Afonin, ex coll. Alex. Schintlmeister, slide MWM 34578 Volynkin (♂) (Coll. MWM/ZSM); 4 ♂, South Vietnam, [Lam Dong prov.] Bao Loc (sec. forest), Rung Cat Tien, 1500 m (11.32’N, 107.48’E), 10–20.XII.1992, leg. Sinajev & Simonov, slide MWM 34576 Volynkin (♂) (Coll. MWM/ZSM); 1 ♂, S Vietnam, Bach-Ma Nat. Park, 1200 m, 16°10’N, 107°54’E, 26.VII.–6.VIII.1996, leg. Sinjaev & Afonin, ex coll. Schintlmeister, slide MWM 34577 Volynkin (♂) (Coll. MWM/ZSM); 1 ♂, Vietnam sept., Tam Dao, 950m, 11.X.1974, leg Karel Spitzer (Coll. CKC); 1 ♂, same locality and collector, but 16.X. 1974 (Coll. CKC); 1 ♂, same locality, but VIII.1975, leg Kubáň (Coll. CKC); 2 ♂, 2 ♀, same locality and collector, but V.1990 (Coll. CKC); 1 ♂, Vietnam., Tam Dao, 18.X.1976, Ing. A. Helia lgt. (Coll. CKC); 3 ♂, 2 ♀, N Vietnam, Tam Dao, 60 (km) NW Hanoi, 21.34°N, 105.20°E, 1200 m, 1– 5.V.1993, secondary forest, leg Sinaev & Simonov, ex coll. Schintlmeister (Coll. CKC); 1 ♂, Vietnam sept., Phansipan, Sapa, 1000 m, V.1990, leg Kubáň (Coll. CKC); 1 ♂, [S Vietnam] Cochin China: Tong; IV.1935 / S. Masseyeff, B.M. 1937-658 (Coll. NHMUK). Diagnosis. Forewing length is 14–17 mm in males and 17–18 mm in females. The continental new subspecies (Figs. 21–24) differs externally from the island nominate subspecies (Figs. 17–20) by its slightly larger size, and significantly broader and orange red transverse lines of forewings (while in C. quadripartita quadripartita the forewing transverse lines are much narrower and pale red). The male genitalia of C. quadripartita vieta ssp. nov. (Figs. 35, 36) differ from those of C. quadripartita quadripartita (Fig. 34) in the slightly larger medial posterior diverticulum and the broader and longer medial anterior diverticulum. The female genitalia of the new subspecies (Fig. 44) differ from those of the nominate subspecies (Fig. 43) in the broader and longer antrum, the broader appendix bursae, and the presence of a small, second signum in the corpus bursae. Distribution (Fig. 46). The subspecies is known from Vietnam (provinces Lao Cai, Vinh Phu, Thua Thien Hue, Kon Tum, Lam Dong). Etymology. The subspecific epithet refers to the country of the taxon distribution: Vietnam (Vietnamese: Việt Nam).

Published as part of Volynkin, Anton V., Černý, Karel & Ivanova, Maria S., 2018, A review of the Cyana bianca (Walker, 1856) species-group with descriptions of a new species and a new subspecies from Indochina (Lepidoptera, Erebidae, Arctiinae) in Zootaxa 4497 (1), DOI: 10.11646/zootaxa.4497.1.5, http://zenodo.org/record/1451108