Cyana malayana Volynkin & Černý & Ivanova 2018, stat. nov.
Creators: name: Volynkin, Anton V.
name: Černý, Karel
name: Ivanova, Maria S.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Erebidae
Cyana
Cyana malayana

description: Cyana malayana Bucsek, 2012, stat. nov.
(Figs. 11–16, 31–33, 40, 41, 46)
Cyana bianca malayana Bucsek, 2012, Erebidae, Arctiinae of Malay Peninsula – Malaysia 2012: 100, pl. 17, figs. 248, 248а, 248b (Type locаlity: “ Mаlаysiа, Pаhаng distr., Cаmeron Highlаnds, Kаmpung Kuаlа Boh vill. env., 850–1050 m, 4°27,9’N, 101°34,8’E ”).
Type material examined. Holotype (Figs. 11, 31): ♂, Malaysia, Pahang distr., Cameron Highlands, Kampung Kuala Boh vill. env., 4°27,9’N, 101°34,8’E, 850–1050 m, 26.III.–3.IV.2001, K. Bucsek leg., 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 ♂, Burma merid., 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, Sri Sawat, 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 km W 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, Nopphitam env., 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.2013 leg. 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 (♂), ZSM Arct. 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 km of SR, 400 m, 24.III.1986, E. Diehl leg. (Coll. CKC); 1 ♂, Sumatra, Via Sindar Raya, 11 km of SR, 400m, 3°53’N, 98°51’E 16.III.1991, E. Diehl leg. (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 type series 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 paratypes of the species (Fig. 42) are not conspecific to the male holotype and paratypes and belong to Cyana determinata sausae Bucsek, 2012 described by males also from Pahang.
Diagnosis. Forewing length is 14.5– 18 mm in males and 19–20 mm in 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, Ranong and Nakhon Si Tammarat), Malaysia (Malay Peninsula), Indonesia (Sumatra Isl.).
description: 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