Cyana artemis Volynkin & Černý, 2019

Volynkin, Anton V. & Černý, Karel, 2019, Three new species of Cyana Walker, 1854 from Indochina and China (Lepidoptera, Erebidae, Arctiinae, Lithosiini), Zootaxa 4586 (2), pp. 338-350 : 338-340

Cyana artemis Volynkin & Černý , sp. n.

( Figs 1–4 , 23, 24 , 35 )

urn:lsid:zoobank.org:act:B035E3CB-7A67-459D-926E-F33B582A7B2E

Type material. Holotype ( Figs 1 , 23 ): ♂, “N-Vietnam [ North Vietnam], 1400m, Mai-chau, Urwald [primary forest], 40 km SE Moc-chau, 20.50’ N 104.50 ’E, 07.–15.IV.1995, leg. Sinjaev & EinhSamml. [local collectors]”, slide MWM 34524 Volynkin (MWM/ ZSM).

Paratypes: CHINA: 1 ♂, China, Guangxi, 35 km NNE Nanning, 10 km S Silong , 800 m, 25–26.III.1999, leg. G. Müller, slide MWM 34537 (♂) Volynkin (Coll. MWM/ ZSM) ; THAILAND: 5 ♂, 1 ♀, Thailand , Changwat Nan, 30 km E Pua, 1700 m, 22–23.IX.1999, leg. A. Szabó & Z. Czere, slides MWM 34527 (♂), MWM 34553 (♂) Volynkin (Coll. MWM/ ZSM) ; 2 ♂, N Thailand, Chiang Mai, Fang, Doi Ang Khang , 1425m, 19°54’11’’N, 99°2’32’’E, 25–26.IV.2006, leg. K. Černý (Coll. CKC) ; 1 ♂, same locality, but 5. VI.2006, leg. T. Ihle (Coll. CKC) ; 8 ♂, 5 ♀, N Thailand, Chiang Mai, Fang, Doi Ang Khang , 1425m, 19°54’11’’N, 99°2’32’’E, 23–27.VII.2006, leg. T. Ihle, slides AV3814 ♂, AV3815 ♀, AV3816 ♀ Volynkin ( Coll. CKC) ; 1 ♀, N Thailand, Chiang Mai, Doi Suthep , 1085m, 18°48’N, 98°54’54’’E, 8. VI.2005, leg. K. Černý (Coll. CKC) ; 1 ♂, W Thailand, Tak, Doi Mussoe , 812 m, 16°45.369’N, 98°56.404’E, 18–21.IX.2007, leg. T. Ihle (Coll. CKC) ; LAOS: 1 ♂, Laos, prov. Luang Prabang, Pak Yaeng Noi , 1200 m, 25–27.V.2013, leg. T. Ihle (Coll. CKC) ; VIETNAM: 6 ♂, 2 ♀, same data as in the holotype, slides ZSM Arct. 119/2017 ♂, MWM 34525 (♀) Volynkin ( Coll. MWM/ ZSM) ; 1 ♂, North Vietnam, Tam Dao , 60 km NW Hanoi, 950 m (21.34’ N 105.20 ’E), 17.X.1994, leg. V. Sinjaev (Coll. MWM/ ZSM) ; 1 ♂, same locality, but 1–15.XI.1992, sec. forest, leg. Sinajev & Simonov, ex coll. Schintlmeister, slide MWM 34531 (♂) Volynkin (Coll. MWM/ ZSM) ; 1 ♂, N Vietnam, 1600 m, Mt. Fan-si-pan (North), Cha-pa , primary forest (22.17’ N 103.44 ’E), 20– 30.IV.1995, leg. Sinjaev & local collectors, slide MWM 34526 (♂) Volynkin (Coll. MWM/ ZSM) .

Diagnosis. The closest relative of the new species is C. moelleri ( Figs 5–8 ) known from Nepal and northern and northeastern India. Cyana artemis sp. n. can be distinguished from it by its slightly broader transverse lines. In addition, the new species is somewhat larger than C. moelleri in general, and usually has somewhat larger black spots on forewing. Females of C. artemis also differ from those of C. moelleri by the stronger curved outer margin of the postmedial line. The genital capsules of the two species are very similar and the valva apex of C. artemis sp. n. ( Figs 23, 24 ) is only narrower and the uncus is slightly longer than those of C. moelleri respectively ( Fig. 25 ). However, the clear distinctive characters are expressed in the aedeagus and vesica structure. The aedeagus of C. artemis sp. n. is broader distally than that of C. moelleri , and its subapical area of short dentation is significantly broader. The vesica of C. artemis sp. n. is broader than that of C. moelleri , its dorsal diverticulum is much longer and broader and has several short but broad subdiverticula subbasally; in addition, vesica of C. artemis sp. n. bears two large, round clusters of numerous robust spinules, whereas in C. moelleri there are a long lateral band and a narrow subapical bunch of spinules. The female genitalia of C. artemis sp. n. ( Fig. 35 ) differ from those of C. moelleri ( Fig. 36 ) by the broader ductus bursae with shorter anterior sclerotised section, narrower sclerotised area of the posterior section of the corpus bursae, and slightly larger signum bursae.

Description. Adult ( Figs 1–4 ). Forewing length 15–17 mm in males (16.5 mm in the holotype) and 17–18 mm in females. Antennae of both sexes weakly ciliate. Head white. Thorax white, with two large orange spots medially; tegulae and patagiae with broad orange margins. Abdomen white with slight admixture of ochreous scales distally. Forewing ground color white; transverse lines orange; subbasal line wavy, broadened at costa; antemedial line wavy medially; postmedial line angled and strongly narrowed in the cell; subterminal line broad, semilunar-like curved; male with two large black spots in the cell: round inner and reniform outer; two black strokes at costa opposite the R angle of the cell. Female with three round spots in the cell. Cilia white. Hindwing white; discal spot diffuse, gray, semilunar. Male genitalia ( Figs 23, 24 ). Uncus dorso-ventrally flattened, short, narrowly arrowhead-shaped, its basal third connected to tuba analis. Tuba analis broad; scaphium not developed; subscaphium as broad setose field. Tegumen narrow, shorter than valvae. Juxta moderately sclerotised, trapezoidal, with round short lower concavity. Vinculum robust, U-shaped. Valva broad and elongated; costal margin slightly curved medially; valva apex broad, slightly narrowed distally and rounded apically; sacculus narrow, heavily sclerotised, its distal process robust, slightly curved dorsally, pointed apically, shorter than distal lobe of valva. Aedeagus large, strongly broadened distally, with heavily sclerotised subapical area bearing numerous small denticles. Vesica globular, with several diverticula: two short and membranous diverticula medially; long and curved, membranous dorsal diverticulum with a small subbasal subdiverticulum; globular granulated diverticulum with a small membranous subdiverticulum subapically; a round cluster of robust spinules subapically; and a round subbasal cluster of small spinules ventrally. Female genitalia ( Fig. 35 ). Ovipositor short, broadly conical. Papillae anales trapezoidal with rounded angles. Apophyses thin; apophyses anteriores approximately two times shorter than apophyses posteriores. Ostium bursae broad. Postvaginal plate moderately sclerotised, lens-shaped, rounded anteriorly. Ductus bursae short, its posterior section membranous, and anterior section heavily sclerotised, with longitudinal wrinkles. Posterior section of corpus bursae narrowed, heavily sclerotised, wrinkled laterally at base of appendix bursae. Anterior section of corpus bursae broad, globular, weakly sclerotised, with round dentate signum medially. Basal section of appendix bursae narrow, heavily sclerotised, situated dorsally; distal section of appendix bursae membranous, saccate, situated laterally.

Distribution. Cyana artemis sp. n. is widely distributed in SE China (Guangxi Prov.), W and N Thailand (provinces Tak, Chiang Mai and Nan), N Laos (Luang Prabang Prov.) and N Vietnam (Hoa Binh, Lao Cai and Vinh Phuc). The record of C. moelleri for Thailand ( Černý & Pinratana 2009) belongs to C. artemis sp. n.

Etymology. In the ancient Greek mythology, Artemis is the goddess of the hunt, the wilderness, wild animals and chastity.

Figures

FIGURES 1–8. Cyana spp.: adults. 1, C. artemis, holotype ♂, N Vietnam (MWM/ZSM); 2, C. artemis, paratype ♂, China, Guangxi (MWM/ZSM); 3, C. artemis, paratype ♂, N Thailand (CKC); 4, C. artemis, paratype ♀, N Thailand (CKC); 5, C. moelleri, holotype ♂, NE India (©NHMUK); 6, C. moelleri, ♂, NE India (MWM/ZSM); 7, C. moelleri, ♂, N Nepal (MWM/ ZSM); 8, C. moelleri, ♀, NE India (MWM/ZSM).

FIGURES 23–25. Cyana spp.: male genitalia. 23, C. artemis, holotype, N Vietnam, slide MWM 34524 Volynkin; 24, C. artemis, paratype, China, Guangxi, slide MWM 34537 Volynkin; 25, C. moelleri, NE India, slide MWM 34506 Volynkin.

FIGURES 35–40. Cyana spp.: female genitalia. 35, C. artemis, paratype, N Vietnam, slide MWM 34525 Volynkin; 36, C. moelleri, E Nepal, slide ZSM Arct. 108/2017 Volynkin; 37, C. intercomma, paratype, W Thailand, slide AV4663 Volynkin; 38, C. bacilla, C Laos, slide MWM 34568 Volynkin; 39, C. kucheri, paratype, N Vietnam, slide ZSM Arct. 79/2017 Volynkin; 40, C. gazella, N India, slide MWM 34493 Volynkin.