Cyana indosinica Volynkin & Černý, 2018

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), Zootaxa 4497 (1) : -

Cyana indosinica Volynkin & Černý , sp. nov.

( Figs. 5–10 , 28–30 , 38, 39 , 46 )

Type material. Holotype ( Figs. 5 , 28 ): ♂, Thailand, Changwat [Province] Nan, 25 km N of Bo Luang, 1150 m, 17.XI.1998, leg. Tibor Csôvári & László Mikus, slide ZSM Arct. 138/2017 Volynkin (Coll. MWM/ ZSM).

Paratypes: THAILAND : 32 ♂, 7 ♀, same data as in the holotype, slide MWM 34572 Volynkin (♂) (Coll. MWM/ ZSM) ; 7 ♂, same locality, but 11.XI.1999, leg. Márton Hreblay (Coll. MWM/ ZSM) ; 1 ♂, Thailand, Changwat Nan, 5 km E of Bo Luang , 610 m, 23.XI.1998, leg. Tibor Csôvári & László Mikus (Coll. MWM/ ZSM) ; 4 ♂, 3 ♀, Thailand, Changwat Nan, 5 km N of Bo Luang , 1000 m, 18.VIII.1999, leg. Tibor Csôvári & László Mikus, slide MWM 33513 Volynkin (♀) (Coll. MWM/ ZSM) ; 2 ♂, 3 ♀, Thailand, Changwat Nan, 6 km N Bo Luang , 1050 m, 19.VIII.1999, leg. T. Csôvári & L . Mikus, slide ZSM Arct. 139/2017 (♀) Volynkin (Coll. MWM/ ZSM); 3 ♂, 3 ♀, Thailand, Changwat Nan, 7 km W of Ban Bo Yuak , 1000 m, 25.XI.1998, leg. Tibor Csôvári & László Mikus (Coll. MWM/ ZSM) ; 11 ♂, Thailand, Changwat Chiang Mai, Mt. Doi Inthanon , NP, 2300 m, 17.X.2000, leg. local collector, slide MWM 34575 Volynkin (♂) (Coll. MWM/ ZSM) ; 1 ♂, Thailand, Chiang Mai, Mt. Doi Inthanon, Nat. Park , 2300 m, 25.IX.1999, leg. A. Szabo & Zita (Coll. MWM/ ZSM) ; 4 ♂, Thailand, Changwat Chiang Mai, 12 km NW Chiang Dao , 750 m, 12.XI.1998, leg. Tibor Csôvári & László Mikus, slide MWM 34574 Volynkin (♂) (Coll. MWM/ ZSM) ; 1 ♂, Thailand, Changwat Chiang Mai, 4 km W of Pa Pae , 1050 m, 28.XI.1998, leg. Tibor Csôvári & László Mikus (Coll. MWM/ ZSM) ; 2 ♂, 1 ♀, Thailand, Mt. Doi Phahompok , 14 km NW of Fang, 1700 m, 16.X.2000, leg. local collector, slide MWM 34573 Volynkin (♂) (Coll. MWM/ ZSM) ; 1 ♂, N Thailand, Chiang Mai prov., between Chiang Dao and Kariang , 900 m, 98°48’E; 19°25’N, 26.X.2002, leg B. Herczik & G. Ronkay (Coll. CKC) ; 1 ♀, N Thailand, Chiang Mai, Chiang Dao , 19°24.232’N, 98°55.596’E, 22.V.2011 leg. K. Černý (Coll. CKC) ; 2 ♂, N Thailand, Chiang Mai, Doi Suthep , 1085 m, 18°48’N, 98°54’54’’E, 8.VI.2005, leg. K. Černý (Coll. CKC) ; 1 ♂, 1 ♀, 14–22.VIII.2016, N Thailand, Chiang Mai prov., Thanon Thong Chai Range, near Doi Suthep-Pui National Park , 18°54'10.50''N 98°51'46.05''E, h= 700 m, secondary forest, Volynkin A.V. & Ivanova M.S. leg. (Coll. CAV) ; 3 ♂, 1 ♀, 24–30.VII.2017, N Thailand, Chiang Mai Prov., Thong Chai Range, near Doi Suthep Pui National Park , 18°54’22.91’’N 98°51’34.76’’E, h= 800 m, primary forest, A.V. Volynkin & M.S. Ivanova leg., slides AV3126 ♂, AV3127 ♂ Volynkin (Coll. CAV) ; 3 ♂, 1 ♀, N Thailand, Chiang Rai, 1090 m, road 1150, km 17 from Wiang Pa Pao , 19°18’45’’N, 99°23’24’’E, 27.V.2011 leg. K. Černý (Coll. CKC) ; 2 ♂ North Thailand, Prov. Nan, Doi Phuka [ Doi Phu Kha ] NP, 1350 m, between Pua and Bo Luang, 101°05’E, 19°12’N, 3.XI.2002, leg B. Herczik & G. Ronkay (Coll. CKC) ; 1 ♀ N Thailand, Nan prov., 785 m, road 1081, 18°52’26’’N, 100°31’44’’E, 31.V.2011 leg. K. Černý (Coll. CKC) ; 1 ♂, W Thailand, Tak, Doi Mussoe , 821 m, 16°45.317’N, 98°55.438’E, 11–12.XI.2010, leg. K. Černý (Coll. CKC) ; 4 ♂, C Thailand, Saraburi, Khao Yai NP, Mt. Khao Kaew , 1244 m, 14°21’56’’N, 101°24’E, 31.V.2005 leg. K. Černý, slide AV3856 ♂ Volynkin (Coll. CKC) ; 1 ♂, C Thailand, Nakhon Ratchasima, Pak Chong , 1300 m, Khao Yai NP, 15.VI.2006, leg. Thomas Ihle, slide AV3857 ♂ Volynkin (Coll. CKC) ; CHINA: 1 ♀, China, [Yunnan] prov. Simao, Mangxi Ba Mts. , 18 km S of Simao city, 1280 m, 15–21.VI.1999, leg. Dr. Ronald Brechlin, slide MWM 33515 Volynkin (Coll. MWM/ ZSM) ; LAOS: 1 ♂, Laos centr., Kham Mouan pr., Nakai vill. env., 560 m, 70 km NNE of Muang Khammouan, 7– 25.V.2002, leg. Milan Štrba, slide MWM 33491 Volynkin (Coll. MWM/ ZSM) ; 2 ♂, 3 ♀, Laos centr., Khamouane province, Nakai env., 17°43’N, 105°09’E; 22.V–8.VI.2001, alt 500–600m, E. Jendek & O. Šauša leg. (Coll. CKC) ; 1 ♂, Laos, prov. Khamouane, Ban Phon Khaen, 20–23.V.2013, leg. T. Ihle (Coll. CKC) ; 12 ♂, 17–28.VIII.2017, South Laos, Champasak prov., 27 km ENE of Pakse, near Tad Fane waterfall, N 15°11’01.1’’ E 106°07’40.5’’, 950 m, border of primary forest, A.V. Volynkin & M.S. Ivanova leg., slides AV3124 ♂, AV3125 ♂ Volynkin (Coll. CAV) ; VIETNAM: 10 ♂, 3 ♀, 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, slides ZSM Arct. 143/2017 ♂ , ZSM Arct. 144/ 2017 ♀ Volynkin (Coll. MWM/ZSM); 2 ♂, 25.V.2016, South Vietnam, Lam Dong Province, Lac Duong District, Tay Nguyen Highlands, Nui Ba National Park, leg. Vo Van Nhon, slide AV3123 ♂ Volynkin (Coll. CAV) ; 1 ♂, same locality and collector, but XII.2015 (Coll. CAV) ; 3 ♂, 1 ♀, VIII.2015, Central Vietnam, Da Nang province, Ba Na Mt. , 1450 m, leg. Le Luong Thanh (Coll. CAV).

Diagnosis. Forewing length is 16–19 mm in males and 19–21 mm in females. Externally, C. indosinica sp. nov. ( Figs. 5–10 ) has no significant differences from C. bianca ( Figs. 1–4 ) and C. malayana ( Figs. 11–16 ) and can be distinguished by the genitalia. The male genitalia of C. indosinica sp. nov. ( Figs. 28–30 ) are most similar to those of C. malayana ( Figs. 31–33 ), but differ in the significantly smaller and weaker ampulla, the broader medial posterior and distal diverticula, which have broader fields of cornuti, the larger medial anterior diverticulum, and the basally broader medial dorsal diverticulum. The female genitalia of C. indosinica sp. nov. ( Figs. 38, 39 ) differ from those of C. malayana ( Figs. 40, 41 ) in the more heavily sclerotized posterior plate of the corpus bursae, which has stronger wrinkles, and the presence of three signa in the corpus bursae (while in C. malayana there are only two signa).

Distribution ( Fig. 46 ). North and Central Thailand (provinces Chiang Rai, Chiang Mai, Nan, Saraburi, Nakhon Ratchasima), SW China (Yunnan), Laos (provinces Khammouan and Champasak), Cambodia (province Pursat) ( Bayarsaikhan & Bae 2016), Central and South Vietnam (provinces Da Nang and Lam Dong).

Etymology. The specific epithet refers to its geographical range located within the Indochina Peninsula.

Figures

FIGURE 46. Distribution mаp of the species аnd subspecies of the Cyana bianca species-group.

FIGURES 1–8. Cyana spp.: аdults. 1, C. bianca, ♂, India, Assam (MWM/ZSM); 2, C. bianca, ♂, India, Assam (MWM/ZSM); 3, C. bianca, ♂, E Nepal (MWM/ZSM); 4, C. bianca, ♀, India, Assam (MWM/ZSM); 5, C. indosinica, holotype ♂, N Thаilаnd, Nаn (MWM/ZSM); 6, C. indosinica, paratype ♂, C Thailand, Saraburi (CKC); 7, C. indosinica, pаrаtype ♂, S Lаos, Chаmpаsаk (CAV); 8, C. indosinica, pаrаtype ♂, S Vietnаm, Lаm Dong (MWM/ZSM).

FIGURES 9–16. Cyana spp.: аdults. 9, C. indosinica, paratype ♀, S Vietnam, Lam Dong (MWM/ZSM); 10, C. indosinica, paratype ♀, N Thailand, Nan (MWM/ZSM); 11, C. malayana, holotype ♂, Malaysia, Pahang (MWM/ZSM); 12, C. malayana, ♂, Malaysia, Perak (MWM/ZSM); 13, C. malayana, ♂, Indonesia, Sumatra (MWM/ZSM); 14, C. malayana, ♂, S Thаilаnd, Chumphon (CKC); 15, C. malayana, ♀, S Thailand, Ranong (CKC); 16, C. malayana, ♀, Mаlаysiа, Perаk (MWM/ZSM).

FIGURES 28–30. Cyana indosinica: mаle genitаliа. 28, holotype, N Thаilаnd, Nаn, slide ZSM Arct. 138/2017 Volynkin; 29, pаrаtype, C Lаos, Khаmmouаn, slide MWM 33491 Volynkin; 30, pаrаtype, S Vietnаm, Lаm Dong, slide AV3123 Volynkin.

FIGURES 37–42. Cyana spp.: femаle genitаliа. 37, C. bianca, Indiа, Assаm, slide ZSM Arct. 137/2017 Volynkin; 38, C. indosinica, pаrаtype, N Thаilаnd, Nаn, slide MWM 33513 Volynkin; 39, C. indosinica, pаrаtype, S Vietnаm, Lаm Dong, slide ZSM Arct. 144/2017 Volynkin; 40, C. malayana, Mаlаysiа, Perаk, slide MWM 33514 Volynkin; 41, C. malayana, Mаlаysiа, Perаk, slide ZSM Arct. 146/2017 Volynkin; 42, C. determinata sausae, pаrаtype of C. bianca malayana, Mаlаysiа, Pаhаng, slide MWM 33484 Volynkin.

FIGURES 31–33. Cyana malayana: mаle genitаliа. 31, holotype, Mаlаysiа, Pаhаng, slide MWM 33517 Volynkin; 32, W Thаilаnd, Kаnchаnаburi, slide MWM 33490 Volynkin; 33, Indonesiа, West Sumаtrа, slide MWM 33487 Volynkin.