Cechetra subangustata continentalis Ivshin & Krutov, 2018

Ivshin, Nikolay, Krutov, Vadim & Romanov, Denis, 2018, Three new taxa of the genus Cechetra Zolotuhin & Ryabov, 2012 (Lepidoptera, Sphingidae) from South-East Asia with notes on other species of the genus, Zootaxa 4450 (1), pp. 1-25 : 13-14

Cechetra subangustata continentalis Ivshin & Krutov ssp.n.

Holotype ♂, Thailand, Nan, Doi Phu Kha N.P., km 35.4, 1540m, 24.vii.1990, leg. I.J. Kitching, BM 1990-171 [ NHMUK] ( Fig. 20 ).

Paratypes. 1 ♀, Thailand, Nan, Doi Phu Kha N.P., km 35.4, 1540m, 24.vii.1990, leg. I.J. Kitching, BM 1990- 171, BMNH (E) # 813011 [ NHMUK] ; 1 ♂, Thailand, Nan, Doi Phu Kha N.P., km 35.4, 1540m, 28.vii.1990, leg. I.J. Kitching, BM 1990-171 [ NHMUK]; 2 ♂ , Thailand, Nan, Doi Phu Kha N.P., km 35.4, 1540m, 10.ix.1990, leg. I.J. Kitching, BM 1990-171 [ NHMUK]; 1 ♀ , Thailand, Nan, Doi Phu Kha N.P., km 35.4, 1540m, 10.ix.1990, leg. I.J. Kitching, BM 1990-171, BMNH (E) # 274789, Sphingidae BNMH (E) Slide No. 2343 [ NHMUK]; 1 ♂ , Thailand, Nan, Doi Phu Kha N.P., km 34.3, 1620m, 13.ix.1990, leg. I.J. Kitching, BM 1990-171 [ NHMUK]; 1 ♂ , Thailand, Nan, Pua to Ban Bo Kleua road, km 61, 800m, 12.ix.1990, leg. I.J. Kitching, BM 1990-171 [ NHMUK]; 1 ♂ , Thailand, Chiang Mai, Doi Inthanon , 9.viii.1988, leg. A.M. Cotton, BM 1989-64 [ NHMUK] ; 1 ♂, N. Thailand, Chiang Mai, Doi Inthanon NP, km 38 checkpoint, 1700m, 4.i.1992, leg. I.J. Kitching & A . M. Cotton, BM 1992-14, BMNH (E) # 272526, Figured on “ Sphingidae of China ” website A.R. Pittaway & I.J. Kitching [ NHMUK] ; 1 ♀, Thailand, Khao Yai N.P., Khao Khieo , 1140m, 28.ii.1989, leg. A.M. Cotton, Brit. Mus. 1989 - 64, BMNH (E) # 272527, Figured on “ Sphingidae of China ” website A.R. Pittaway & I.J. Kitching [ NHMUK] ; 1 ♂, Thailand, Khao Yai N.P., Khao Khieo , 1140m, 28.ii.1989, leg. A.M. Cotton, Brit. Mus. 1989-64, BMNH (E) # 812873, Sphing genitalia slide No. 673 [ NHMUK] ; 1 ♀, Malaya [ Malaysia], Maxwell’s [ Hill ], 4000’, 7.ii.1954, Lt., leg. S/ Lr [Squadron Leader] J.L.C. Banks, Brit. Mus. 1960-722 [ NHMUK] ; 1 ♂, 1 ♀, Malaya [ Malaysia], Maxwell’s [ Hill ], 4500’, xi.1954, “ Cottage ”, leg. S/ Lr [Squadron Leader] J.L.C. Banks, Brit. Mus. 1960-722 [ NHMUK] ; 1 ♂, Malaysia, Cameron Highlands, 1984, Native collect., [H. Inoue] Slide 15158 (♂), Inoue coll. BM 1992-71 [ NHMUK] ; 1 ♀, Malaysia, Cameron Highlands, 1984, Native collect., Inoue coll. BM 1992-71 [ NHMUK] ; 1 ♀, [ Thailand,] Doi Inthanon , 7.x.1985, 86.6.3 C lineosa ♀, Cadiou Coll. BMNH (E) 2008-107 [ NHMUK] ; 1 ♀, Malaysia, Frasers-Hill , 29.iii.1985, leg. L. Jean, 85.18 .5 lineosa ♀, Coll. JM Cadiou, Cadiou Coll. BMNH(E) 2008-107. 2 ♂, Malaysia, Perak, Maxwell Hill, nr Taiping , 5/28/2002, leg. Kroutov V .V., coll. V.V. Krutov; 1 ♂, Thailand, Chiang Mai, Fang , 3-27.ix.2012, leg. N. Ivshin, coll. V.V. Krutov; 1 ♂ , Thailand, Pai- Soppong road, 19.4456437°N 98.319442°E, alt 1430m, 17.10.2009, leg. N. Ivshin, coll . V.V. Krutov ; 1 ♂, N. Thailand , Chiang Mai dist., Doi Saket , iv.2014, leg. local collector, coll. V.V. Krutov ; 1 ♂, Vietnam, Tam Dao Natl Park Research Station , 900m, 20.iii.2010, leg. local collector, coll. V.V. Krutov ; 1 ♂, Vietnam, Lang Son, Loc Binh , Mt Mau Son, 1140m, 09.viii.2009, leg. local collector, coll. V.V. Krutov; 1 ♂ , Vietnam, Quang Nam, Tay Giang , 1300m, 10-21.vii.2009., leg. local collector, coll. V.V. Krutov; 2 ♂ , Taiwan, YiLan County, Suao , 17.viii.2012, leg. local collector, coll. V.V. Krutov; 1 ♀ , Vietnam, Central Highlands Region , Kon Tum Province, Dak Glei district , 1km NW Dak Man village , 15°13'24.4''N, 107°43'50.6''E, h= 1080m., 11- 27.05.2017, light trap, leg. A.V. Korshunov, coll. V.V. Krutov; 2 ♂ , Thailand, Chiang Mai prov., Mae Tang , viii.2014, leg. local collector, coll. N. Ivshin; 2 ♂, 1 ♀ , Thailand, Chiang Mai prov., Doi Saket , viii.2014, leg. local collector, coll. N. Ivshin ; 1 ♂, Vietnam, Lâm Ðỗng prov., Ðà Lạt, iii.2016, leg. local collector, coll. N. Ivshin ; 1 ♂, Vietnam, Thua Thien Hue prov. , Bạch Mã Mt. , 1400 m, iii.2016, leg. local collector, coll. N. Ivshin ; 1 ♂, Malaysia, Cameron Highlands, Cameron road, 19 mile, 17.iv.2012, leg. local collector, coll. N. Ivshin ; 1 ♂, Thailand, Province de Lamphun , road to Lampang (Highway 11), Province border Lamphun / Lampang, 854 m, Doi Kuntan Noi TV station, 18°25'708’’N, 99°13'070’’W, 12 VIII 2 0 0 1, leg. Haxaire J. & Paquit O [ CJHL]; 3 ♂ , Thailand, Province de Chiang Mai , road Ban Buak Mu - Mae Hong Son, 1 km before the province border Chiang Mai / Mae Hong Son, 1300m, 19°16'184’’N, 98°37'863’’W, 14 VIII 2001, leg. Haxaire J. & Paquit O [ CJHL]; 3 ♂ and 1 ♀ , Thailand, Province de Chiang Mai, Road to the Ang Kang Nature Resort, Doi Ang Kang, 1790m, 19°52'049’’N, 99°03'118’’W, 17 VIII 2001, leg. Haxaire J. & Paquit O [ CJHL]; 1 ♂ , Thailand, Province de Kanchanaburi, Ban Phu Teay, Dong Leg , 710m, 14°42'374’’N, 98°54'402’’W, 22 VIII 2001, leg. Haxaire J, Paquit O. & Pinratana A [ CJHL]; 1 ♂ and 1 ♀ , Laos, Pr. Houa Phan, 2 VIII 2010, Ban Saleuy (centre), N.20°13.740’/ E 103°59.490’, 1357 m, leg Haxaire J., Paquit O. & Collard S [ CJHL]; 4 ♂ , Laos, Pr. Houa Phan, 4 VIII 2010, 100m sous le sommet du Phu Pan (= Phu Louang ), N.20°11.841’/ E 104°01.059’ , 1859 m, leg Haxaire J., Paquit O. & Collard S [ CJHL]; 2 ♀ , Laos, Pr. Houa Phan, 5 VIII 2010, 100m sous le sommet du Phu Pan (= Phu Louang ), N.20°11.841’/ E 104°01.059’ , 1859 m, leg Haxaire J., Paquit O. & Collard S [ CJHL]; 1 ♂ and 2 ♀ s, Vietnam (Nord) , Tonkin, ex coll Gilbert Lachaume [ CJHL]; 2 ♂, Malaisia, Cameron Highlands, route de Tapah à Tanah Rata pk 57, 1400m, 1 VIII 1991, leg. Haxaire J . and Wident P [CJHL]; 3 ♀s, Malaisia, Cameron Highlands, Tanah Rata, 1300-1800m, 2004, leg. local people [CJHL]; 1 ♂, Malaisia, Taiping , Perak, V 1993, leg. local people [ CJHL] ; 1 ♂, Taïwan, Han-Shih, Mingchi Resort , lat. 24.646 long. 121.462, 900m., 15 IX 2007, leg. Rougerie R. [ CJHL] .

Total: 64 paratypes.

FWL: holotype: 55 mm

The new subspecies is as large as the nominotypical subspecies, but has a more uniformly green forewing upperside ground colour and, consequently, a less contrasting pattern of stripes than C. subangustata subangustata . Analysis of mtDNA did not reveal any significant difference between the new and the nominotypical subspecies. The male genitalia slightly differ from those of the nominotypical subspecies in the distal hook-like process of the phallus armature having 1 to 3 small teeth apically and/or on its upperside, and a slightly less angular harpe. Two of the genital forms are shown on Figs 37 and 38 .

In comparison with nominotypical subspecies, which has more insular distribution (its type locality is Lebong Tandai, Bengkulu Residency area of the South Sumatra (Sumatra Selatan) province, Indonesia and it occurs on the Indonesian islands of Sumatra, Java and Yamdena), C. subangustata continentalis inhabits continental Indochina ( Thailand, Vietnam, Malaysia, and South-Western China) and Taiwan. Specimens matching the subspecies description in habitus and male genital morphology also occur in Sumatra, mostly in North Sumatra Province. All specimens of the nominotypical subspecies from Sumatra known to us are from West Sumatra. Among 31 specimens from there only three were identified as ssp. continentalis . Thus, it appears to be a weak introgression of spp. continentalis into this territory rather than a true sympatry. However, further study of the Sumatran distribution of the two subspecies is needed. The host plants of C. subangustata continentalis are unknown.

Etymology. The name refers to the mostly continental distribution of the subspecies, contrary to the insular distribution of the nominotypical subspecies.

Figures

FIGURE 20. Type specimeNs of Cechetra subangustata continentalis ssp. n. from NHMUK: a—♂ holotype dorsal view, b— ♂ holotype veNtral view; c—♀ paratype dorsal view, d—♀ paratype veNtral view.

FIGURE 37. Cechetra subangustata continentalis ssp. n., paratype (BOLD sample ID BC-Ivsh04727), VietNam: a—sagital projectioN of male geNitalia (oNe valve is removed); b—phallus armature.

FIGURE 38. Cechetra subangustata subangustata (BOLD sample ID BC-KVIMG9976-17, INdoNesia—TaNimbar, YamdeNa): a—sagittal projectioN of male geNitalia (oNe valve is removed); b—phallus armature.