Cyana yunnanensis yunnanensis (Hampson, 1903)

(Figs 7–14, 38, 39, 51)

Chionaema yunnanensis Hampson, 1903, The annals and magazine of natural history (7) 11: 346 (Type locality: [China, W Yunnan Prov., Tengchong] “ Yunnan, Teng Yeuk ”).

= Chionaema hoenei [ originally spelled as hönei] Daniel, 1952, Bonner zoologische Beiträge, 3 (3–4): 312 (Type locality: [China, NW Yunnan, Lijiang] “ Nord Yuennan: Li-kiang ”), syn. n .

Type material examined. Holotype of Chionaema yunnanensis (by monotypy) (Fig. 7): “ Yunnan. | Teng Yeuk. | H.E. Hobson. | 1900–192.” / “ Chionaema | yunnanensis | type ♀ Hmpsn.” / red ring “Type” label / QR-code label with unique ID “NHMUK010402111” (NHMUK). Holotype of Chionaema hoenei (Fig. 9): male, yellow label “[China, NW Yunnan, Lijiang] Li-kiang ca. 2000m | Prov. Nord-Yuennan | 28.8.1934. H. Ĥne” / red label “ Holotype | Chionaema | ĥnei Daniel” / pink label “Typus” (ZFMK); paratypes of Chionaema hoenei: 1 female, same locality and collector as holotype but 1.X.1934 / Allotype Chionaema ĥnei Daniel / Allotypus, gen. prep. No.: AV1879 (prepared by Volynkin) (ZFMK); 1 female, same locality and collector as previous but 5.ix.1934, unique ID ZFMK Lep153478, gen. prep. by Huang (ZFMK).

Additional material examined. CHINA, YUNNAN: 1 male, [Diqing Tibetan Autonomous Prefecture,Adunzi] A-tun-tse (N Yunnan), Talsohle [valley bottom] ca. 3000m, 4.IX.1936, H. Ĥne, gen. prep. No.: AV1878 (prepared by Volynkin) (ZFMK) ; 1 male, 2 females, Tse-Kou, 2000m, 28°02’N 98°54’E, 5–10. VI.2011, Jiří Klir leg., gen. prep. Nos.: AV3919 (male), AV3920 (female) (prepared by Volynkin) (CKC) ; 1 male, West China, gen. prep. No.: AV2071 (prepared by Volynkin) (ZFMK) ; 1 male, Nu Jiang Valley, road Fugong / Gongshan, 1650m, 27°01.49’N 98°52.54’E, 14. V.2018, Butvila & Saldaitis leg., gen. prep. No.: AV5581 (prepared by Volynkin) (AFM) ; 1 male, 3.VIII.2019, Fanghua Town, Luliang County, Qujing City, Shao-kui Wen leg. (SCAU) ; 1 male, same locality and collector as previous, but 13.IX.2019 (CHSY); 1 male, same data as previous, but 30.VIII.2019 (CHSY); 1 male, same data as previous, but 27.VIII.2019 (CHSY); 1 male, same data as previous, but 10.IX.2019 (CHSY) .

Note. Like some other species in the genus (demonstrated by Singh et al. (2020); also see C. bacilla below), C. yunnanensis has two colour forms: the red and the yellow ones. The holotype of the species represents a yellow form (Fig. 7) while the type series of C. hoenei (Figs 9, 10) has red transverse lines. An additional variation of the red form lacking transverse lines is also found in this species (Figs 13, 14).

Diagnosis. The forewing length is 12.0–15.0 mm in males and 13.5–16.0 mm in females. The species (Figs 7–17) is externally vaguely reminiscent of C. khami sp. n. and C. bacilla (Figs 26–31) but differs clearly in the somewhat thinner ante- and postmedial lines, the lack of the subterminal line, the somewhat smaller black spots on the forewing, and the hindwing suffused with grey and pink and having a diffuse discal spot on the hindwing whereas it is unicolorous deep pink or ochreous yellow without a discal spot in the aforementioned congeners. The male genitalia of C. yunnanensis (Figs 38, 39) are characterised by the vesica lacking cornuti and having a distal diverticulum with several tiny subdiverticula. The genitalia of both sexes (Figs 38, 39, 51) are most similar to C. dubernardi sp. n. (Figs 37, 53) and the detailed comparison is provided below under the diagnosis of the latter species.

Distribution. Currently known only from Yunnan Province of China (Fig. 60).