Cyana bianca malayana Bucsek, 2012
Erebidae, Arctiinae
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)
Volynkin, Anton V.
Černý, Karel
Ivanova, Maria S.
BFDWK
Bucsek, 2012
Volynkin & Černý & Ivanova
2018
Bucsek
2012
[151,526,151,178]
Insecta
Erebidae
Cyana
GBIF
Animalia
Lepidoptera
12
Arthropoda
species
malayana
stat. nov.
Cyana bianca malayana Bucsek, 2012, Erebidae, Arctiinaeof Malay Peninsula – Malaysia 2012: 100, pl. 17, figs. 248, 248а, 248b ( Typelocаlity: “ Mаlаysiа, Pаhаngdistr., Cаmeron Highlаnds, Kаmpung Kuаlа Boh vill. env., 850–1050 m, 4°27,9’N, 101°34,8’E”).
Typematerial examined. Holotype( Figs. 11, 31): ♂, Malaysia, Pahangdistr., Cameron Highlands, Kampung Kuala Bohvill. env., 4°27,9’N, 101°34,8’E, 850–1050 m, 26.III.–3.IV.2001, K. Bucsekleg., slide MWM 33517 Volynkin( Coll.MWM/ ZSM). Paratypes: 3 ♂, same data as in the holotype, slides MWM 31806, MWM 33483 Volynkin (Coll. MWM/ ZSM). Other material examined: MYANMAR: 1 ♂, Burmamerid., Tenasserim, Khao Yai, 1000 m, 99’30’’E, 13’14’’N, Lf, VII.1995, lg. Steinke & Lehmann, slide MWM 33488 Volynkin( Coll.MWM/ ZSM); 1 ♀, Burmah, Adanusn. / Rothschild Bequest B.M.1939.-I. ( Coll. NHMUK); THAILAND: 1 ♂, W Thailand, Kanchanaburi, SriSawat, Ban Dong Lek, 10.V. 2005, 735 m, leg. K. Sukhumalind, slide AV 3855 ♂ Volynkin( Coll.CKC); 6 ♂, SW Thailand, Ranong, 543 m, 10°02’01’’N, 98°40’17,66”E, 7.IV.2013, leg. K. Černý, slides AV 3852 ♂, AV 3853 ♂ Volynkin( Coll.CKC); 8 ♂, 1 ♀, SW Thailand, Ranong[prov.], Ranong, 380 m, 10°01’32”N, 98°40’13”E, 3– 4.XII.2005, leg. K. Černý, slide AV 3854 ♂ Volynkin( Coll.CKC); 1 ♂, 4 ♀, SW Thailand, Chumphon, Pa Toh, Ban Lang Tang, 162 m, 9°46’5”N, 98°46’59”E, 2006 ex ovo, K. Černý( Coll.CKC); 1 ♂, SW Thailand, Chumphon, Pa Toh, Ban Lang Tang, 162 m, 9°46´5”N, 98°46´59”E, 19, 21.XI.2006, leg. K. Černý, slide AV3851 ♂ Volynkin( Coll.CKC); 4 ♂, SW Thailand, Chumphon, Pa Toh, Ban Lang Tang, 162 m, 9°46’5”N, 98°46’59”E, 7.XII.2005, leg. K. Černý( Coll.CKC); 1 ♂, Muang Thai, Changwat Chumphon, Amphoe Pa Toh, 10 kmW Baan Lang Tang, primary forest, 160 m, 11–12.VII.2007, lg. Manghong Jantharamphorn & Lechner, ex coll. Lechner( Coll.CKC); 2 ♂, SW Thailand, Nakhon Si Tammarat, Khao Luang region, Nopphitamenv., 70 m, 8°44.043’N, 99°41.450’E, 12–13.IV.2013, leg. K. Černý( Coll.CKC); 3 ♂, 2 ♀, SW Thailand, Nakhon Si Tammarat, Amphoe Ron Pibun, Ang Ka Tai Hill, 8°14.16’N, 99°48.12’E, 9.IV.2013leg. K. Černý( Coll.CKC); MALAYSIA: 6 ♂, 2 ♀, Malaysia, Prov. Perak, Taiping, VI– V.1978, coll. Dr. W. Thomas, slides ZSM Arct.145/2017 ♂, MWM 33485 ( ♂), ZSMArct. 146/2017 ♀, MWM 33514 ( ♀) Volynkin( Coll.MWM/ ZSM); 1 ♂, Malaysia, Taiping, coll. Dr. W. Thomas( Coll.MWM/ ZSM); INDONESIA: 1 ♂, W Sumatra, Padang Panjang, Lembah Anai, 300 m, 0°27’S, 100°23’E, I.2004, leg. Jakl, slide MWM 33486 Volynkin( Coll.MWM/ ZSM); 1 ♂, W Sumatra, Mt. Sanggul, Landai, 1200–1300 m, 0°00’, 100°38’E, I–II.2004, leg. St.Jakl, slide MWM 33487 Volynkin( Coll.MWM/ ZSM); 1 ♂, Indonesia, North Sumatra, Via Sindar Raya – Pematang Raya, 11 kmof SR, 400 m, 24.III.1986, E. Diehlleg. ( Coll.CKC); 1 ♂, Sumatra, Via Sindar Raya, 11 kmof SR, 400m, 3°53’N, 98°51’E 16.III.1991, E. Diehlleg. ( Coll.CKC).
Remarks. 1.The male and female genitalia of malayana( Figs. 31–33, 40, 41) have significant differences from those of C. bianca( Fig. 25–27, 37). Therefore we treat this taxon as a good species and not a subspecies of C. bianca. 2.The typeseries from Cameron Highlands has reduced black borders of the ante- and postmedial lines ( Fig. 11), while the specimens from other parts of the species’ range north and south of Cameron Highlands have the well-developed black borders of the transverse lines ( Figs. 12–16). Because of the absence of genital differences ( Figs. 31–33), we treat this population as a local color form only. 3.The female paratypesof the species ( Fig. 42) are not conspecific to the male holotypeand paratypesand belong to Cyana determinata sausae Bucsek, 2012described by males also from Pahang.
Diagnosis. Forewing length is 14.5– 18 mmin males and 19–20 mmin females. Externally, C. malayana( Figs. 11–16) has no significant differences from C. bianca( Figs. 1–4) and C. indosinica sp. nov.( Figs. 5–10). The male genitalia of C. malayana( Figs. 31–33) differ clearly from those of C. bianca( Fig. 25–27) in the rounded lateral lobes of the vinculum, the larger and more robust ampulla, the much larger medial posterior, medial anterior and distal diverticula, and the broader medial dorsal diverticulum; from C. indosinica sp. nov.( Figs. 28–30) they differ in the significantly larger and more robust ampulla, the narrower medial posterior and distal diverticula, which have narrower fields of cornuti, the smaller medial anterior diverticulum, and the basally narrower medial dorsal diverticulum. The female genitalia of C. malayana( Figs. 40, 41) differ from those of C. bianca( Fig. 37) in the longer ductus bursae, the larger appendix bursae, the shorter and stronger rugose posterior sclerotized plate of the corpus bursae, the weakly sclerotized medial-lateral sclerotized band of the corpus bursae, and the much smaller signa; from C. indosinica sp. nov.( Figs. 38, 39) they differ in the more weakly sclerotized and much less rugose posterior plate of the corpus bursae, and the presence of only two signa in the corpus bursae (while in C. indosinica sp. nov.there are three signa in the corpus bursae).
Distribution( Fig. 46). South Myanmar( Hampson 1900), South-West and South Thailand(provinces Kanchanaburi, Chumphon, Ranongand Nakhon Si Tammarat), Malaysia(Malay Peninsula), Indonesia( SumatraIsl.).
1914299851
2001-03-26
2001-04-03
2001-03-26
ZSM
K. Bucsek & Volynkin & Coll.
Malaysia
950
4.465
Kampung Kuala Boh
130
101.58
Cameron Highlands
12
1
1
Pahang
holotype
1914299841
2001-03-26
2001-04-03
2001-03-26
ZSM
K. Bucsek & Volynkin & Coll.
Malaysia
950
4.465
Kampung Kuala Boh
130
101.58
Cameron Highlands
12
3
3
Pahang
paratype
1914299864
[199,750,530,555]
Myanmar
MYANMAR
12
1
1
1914299843
1995-07
ZSM
Volynkin & Coll.
Myanmar
1000
Lf
12
1
1914299856
NHMUK
Rothschild Bequest B. M.
Myanmar
Coll.
12
1
1
1914299858
[865,1392,602,627]
W Thailand
Thailand
Kanchanaburi
12
1
1
Kanchanaburi
1914299842
2005-05-10
K. Sukhumalind & Volynkin & Coll.
Thailand
Sri
12
1
1
Sri
1914299865
Thailand
Thailand
12
6
6
1914299849
2013-04-07
K. Cerny & Volynkin & Coll.
Thailand
543
10.033611
Ranong
15
98.67157
12
2
2
Ranong
1914299846
[423,892,710,735]
Thailand
Ranong
12
9
1
8
Ranong
1914299860
2005-12-03
2005-12-04
2005-12-03
K. Cerny & Volynkin & Coll.
Thailand
380
10.025556
Ranong
21
98.67027
12
1
1
Ranong
1914299844
K. Cerny & Coll.
Thailand
162
9.768055
Ban Lang Tang
21
98.78306
Pa Toh
12
5
4
1
Chumphon
1914299862
[1204,1431,782,807]
Thailand
Thailand
12
1
1
1914299855
2006-11-21
K. Cerny & Volynkin & Coll.
Thailand
162
9.768055
Ban Lang Tang
21
98.78306
Pa Toh
12
1
1
Chumphon
1914299848
2005-12-07
K. Cerny & Coll.
Thailand
162
9.768055
Ban Lang Tang
21
98.78306
Pa Toh
12
4
4
Chumphon
1914299861
2007-07-11
2007-07-12
2007-07-11
Lechner & Coll.
Thailand
160
Amphoe Pa Toh
Muang Thai
12
1
1
Changwat Chumphon
1914299863
2013-04-12
2013-04-13
2013-04-12
K. Cerny & Coll.
Thailand
Nakhon Si Tammarat
70
8.73405
Nopphitam
1
99.690834
Khao Luang region
12
2
2
1914299845
2013-04-09
K. Cerny & Coll.
Thailand
Nakhon Si Tammarat
8.236
Ang Ka Tai Hill
13
99.802
Amphoe Ron Pibun
12
5
2
3
1914299854
Malaysia
MALAYSIA
12
8
2
6
1914299868
1978-05
ZSM
Dr. W. Thomas & Arct.
Malaysia
Taiping
12
2
2
Perak
1914299852
[205,1021,1106,1131]
ZSM
Malaysia
Coll.
Volynkin
12
2
2
Perak
1914299859
ZSM
Dr. W. Thomas
Malaysia
Coll.
Taiping
12
1
1
1914299850
2004-01
ZSM
Jakl & Volynkin & Coll.
Indonesia
300
-0.45
Lembah Anai
1308
100.38333
Padang Panjang
12
1
1
Sumatra
1914299847
2004-01
2004-02-31
2004-01
ZSM
St. & Volynkin & Coll.
Indonesia
1250
Landai
100.63333
Mt. Sanggul
12
1
1
Sumatra
1914299853
1986-03-24
E. Diehl & Coll.
Indonesia
400
Via Sindar Raya - Pematang Raya
12
1
1
North Sumatra
1914299857
1991-03-16
E. Diehl & Coll.
Indonesia
400
3.8833332
Via Sindar Raya
1307
98.85
12
1
1
Sumatra