Palumbina atricha Lee et Li

Ga-Eun Lee 1, Houhun Li, Taeman Han & Haechul Park, 2018, A taxonomic review of the genus Palumbina Rondani, 1876 (Lepidoptera, Gelechiidae, Thiotrichinae) from China, with descriptions of twelve new species, Zootaxa 4414 (1), pp. 1-73 : 19-20

Palumbina atricha Lee et Li , sp. nov.

( Figs 3 , 18 , 37 , 56 , 72 , 73 , 95 , 114 )

Type material. Holotype ♂, CHINA, Hainan Province, Wuzhishan National Park (18.88°N, 109.67°E), 766 m, 8.i.2016, leg. Kaijian Teng, Xia Bai and Mengting Chen, genitalia slide no. LGE16298, DNA voucher no. LGE- G023 . Paratypes. Hainan Province: 1 ♂, Diaoluoshan (18.43°N, 109.52°E), 70 m, 27.v.2007, leg. Zhiwei Zhang and Weichun Li ; 4 ♂♂, 8 ♀♀, Diaoluoshan (18.8°N, 109.89°E), 940 m, 31.v ̄ 2.vi.2007, leg. Zhiwei Zhang and Weichun Li, genitalia slide no. GW12226 ; 4 ♂♂, 9 ♀♀, Jianfengling (18.73°N, 108.91°E), 940 m, 4̄ 7.vi.2007, leg. Zhiwei Zhang and Weichun Li, genitalia slide nos. GW12237, LGE16305, LGE16380, NKLGE006 ; 1 ♀, Jianling Village (18.89°N, 110.25°E), 110 m, Beida Town , Wanning City, 29.vii.2008, leg. Bingbing Hu and Li Zhang ; 1 ♀, Wuzhishan Nature Reserves (18.90°N, 109.67°E), 740 m, 14.iv.2009, leg. Qing Jin and Bingbing Hu ; 1 ♀, Maoyang Town (18.94°N, 109.51°E), 225 m, Wuzhishan City, 20.iv.2009, leg. Qing Jin and Bingbing Hu ; 1 ♀, Jianfengling (18.73°N, 108.91°E), 800̄ 900 m, 5.xii.2009, leg. Zhaohui Du and Linlin Yang ; 3 ♂♂, 9 ♀♀, Tianchi (18.74°N, 108.84°E), 1050 m, Jianfengling, Ledong County, 29̄ 30.iv.2013, leg. Yinghui Sun, Wei Guan and Tengteng Liu, genitalia slide nos. GW13084, GW13085, DNA voucher no. LGE-G019 ; 1 ♀, Bawangling (19.12°N, 109.08°E), 27.vii.2013, leg. Haili Yu and Zhe Fan ; 1 ♀, Hongxin Village (19.08°N, 109.52°E) 430 m, Yuanmen, Baisha County, 16.iv.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu, genitalia slide no. LGE16306 ; 2 ♀♀, Wuzhishan Nature Reserves (18.91°N, 109.68°E), 710 m, 21.iv.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu, genitalia slide no. LGE16184, DNA voucher no. LGE-G028 ; 1 ♀, Jianfengling Nature Reserves (18.74°N, 108.84°E), 1050 m, Ledong County, 2 7.iv.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu, genitalia slide no. LGE16 302 ; 1 ♀, Wuzhishan Nature Reserves (18.88°N, 109.65°E), 742 m, 4.vii.2014, leg. Peixin Cong, Linjie Liu and Sha Hu, genitalia slide no. LGE16335 ; 2 ♂♂, 2 ♀♀, Jianfengling Nature Reserves (18.74°N, 108.87°E), 770 m, Ledong County, 15̄ 17.vii.2014, leg. Peixin Cong, Linjie Liu and Sha Hu, genitalia slide nos. LGE16186, LGE16300, DNA voucher no. LGE-G063 ; 2 ♀♀, Limushan Forest Park (19.17°N, 109.73°E), 607 m, 23̄ 24.vii.2014, leg. Peixin Cong, Linjie Liu and Sha Hu ; 3 ♂♂, 2 ♀♀, Diaoluoshan Nature Reserves (18.43°N, 109.52°E), 922 m, 24̄2 7.v. 201 5, leg. Peixin Cong, Wei Guan and Sha Hu, genitalia slide no. LGE16059, DNA voucher no. LGE-G020 ; 1 ♂, Limushan Nature Reserves (19.17°N, 109.73°E), 632 m, 2 9.vi. 201 5, leg. Qingyun Wang, Suran Li and Mengting Chen ; 1 ♀, Shuiman Town (18.88°N, 109.67°E), 766 m, Wuzhishan City, 6.vii.2015, leg. Qingyun Wang, Suran Li and Mengting Chen ; 1 ♀, Tianchi (18.73°N, 108.87°E), 787 m, Jianfengling, 15.i.2016, leg. Kaijian Teng, Xia Bai and Mengting Chen, DNA voucher no. LGE-G024 ; 1 ♂, Tianchi (18.73°N, 108.87°E), 787 m, Jianfengling, 6.iii.2016, leg. Qingyun Wang, Suran Li and Shengnan Zhao ; 1 ♀, Wuzhishan Nature Reserves (18.90°N, 109.67°E), 738 m, 27.vii.2016, leg. Xia Bai, Shuonan Qian and Wanding Qi ; 1 ♀, Nankai Town (19.07°N, 109.40°E), 270 m, Yinggeling, 8.xi.2016, leg. Xia Bai, Shuonan Qian and Wanding Qi; Yunnan Province: 2 ♀♀, Bubang (21.6°N, 101.59°E), 650 m, Mengla County, 22̄ 25.viii.2005, leg. Yingdang Ren, genitalia slide no. ZJL05446 ; 2 ♀♀, Wenquan (24.97°N, 103.01°E), Kunming, 1900 m, 30.viii.2005, leg. Yingdang Ren ; 1 ♀, Mengyuan (21.72°N, 101.39°E), 640 m, Mengla County, Xishuangbanna, 10.viii.2010, leg. Yinghui Sun and Lixia Li, DNA voucher no. LGE-G022 ; 1 ♂, Yexianggu (22.17°N, 100.87°E), 762 m, Xishuangbanna, 19.vii. 201 4, leg. Kaijian Teng, Wei Guan, Xiuchun Wang and Shurong Liu, genitalia slide no. LGE16 0 58, DNA voucher no. LGE-G021 ; 1 ♂, Yexianggu (22.17°N, 100.87°E), 762 m, Xishuangbanna, 8.vii.2015, leg. Kaijian Teng and Xia Bai ; 1 ♀, Menglun Botanical Garden (21.9°N, 101.27°E), 580 m, Jinghong City, 6.viii.2016, leg. Kaijian Teng, Ga-Eun Lee and Tao Wang, genitalia slide no. LGE16 299.

Description. Adult (Figs 18, 72, 73). Wingspan 7.0̄11.0 mm. Head yellowish white to light yellow. Labial palpus light yellow, shorter and stout in male; segment II as long as III, male hair pencil absent; segment III fuscous in female. Antenna with scape light yellow; flagellum light yellow on dorsal surface and fuscous on ventral surface in male, entirely fuscous in female; male with cilia as long as width. Thorax and tegula light yellow. Forewing ground color light yellow to brown, basal 1/3 black on costa, sometimes with a black spot at base near costa; markings creamy white to yellow: antemedian fascia straight, moderately broad, extending posteriorly along dorsum to base, forming a brown semicircular mark; distal patch between 1/2 and 2/3, reprented by an irregular diffusion, or two or three distal streaks formed by yellow scales. Hindwing dark grey. Legs whitish yellow; fore femur with dorsal half black on outer surface, fore tibia black on outer surface, inner surface with a black longitudinal stripe, apically black, fore tarsus black on outer surface, inner surface with first tarsomere black at middle, remaining tarsomeres ringed with black apically; mid tibia black apically, mid tarsus with first tarsomere black at middle, remaining tarsomeres ringed with black apically; hind femur black at base, hind tibia black near tibial spurs, after middle, and at apex, hind tarsus as in mid tarsus.

Pregenital abdomen (Figs 37, 56). In male, coremata 1/3 length of abdomen; sternum VIII small, tapering toward pointed posterior end, sub-triangular. In female, sternum VII deeply concave on posterior margin in Vshape; tergum VII concave on posterior margin, with a medial bump, forming a W-shape.

Male genitalia (Fig. 95). Uncus sub-rectangular, setose distally, apex slightly convex at middle. Gnathos hook upcurved, pointed at apex. Tegumen 2.5 times longer than uncus. Valva narrow, about 1/3 width of uncus, curved inward, distal half with long setae, sharply pointed at apex. Anellus lobes oval, about 1/2 length and twice width of vlava; apical bristle hooked, 1/2 length of anellus lobe. Vinculum slender, with a pair of conical-shaped processes 1/2 length of anellus lobes. Saccus very slender, 2/3 length of anellus lobe. Aedeagus with basal 1/4 dilated, distal 3/4 slender and sinuous; interior sclerite arising from basal 1/4, reaching apex.

Female genitalia ( Fig. 114 ). Papillae anales simple. Apophyses anteriores about 1/3 length of apophyses posteriores. Tergum VIII narrowed posteriorly, sternum VIII with a band of sclerotization on anterior margin. Ostium bursae large, U-shaped. Antrum broad, sclerotized dorsally. Ductus bursae narrow, as long as corpus bursae; colliculum at middle, shortly sclerotized; ductus seminalis arising from below colliculum. Corpus bursae elliptical; signum situated at middle, basal plate rhombiform, with a hook-shaped process arising anteriorly.

Diagnosis. This new species can be distinguished by the absence of the hair pencil on the male labial palpus, which is unusual in this genus. It is externally very similar to P. sigmoides sp. nov., but in P. sigmoides sp. nov. the scape is usually suffused with brown scales on the posterior margin, the basal black spot on the forewing is more or less distinct, and the hind tibia is often suffused with fuscous on the inner surface, which are all not obvious in P. atricha sp. nov. The male genitalia are characterized by having a slender valva and the conical-shaped processes on the vinculum; the female genitalia are characterized by the large and U-shaped ostium bursae, and the relatively short ductus bursae as compared to P. macrodelta and P. sigmoides sp. nov.

Distribution. China (Hainan, Yunnan).

Etymology. The species name is derived from the Greek, a (without) and tricho (hair), referring to the absence of the hair pencil on the segment II of the labial palpus in male.

Variations. In some specimens, the forewing markings can be indistinct or absent.

Figures

FIGURES 3, 4. Distribution of Chinese Palumbina spp. 3, the macrodelta-group: ●, P. macrodelta (Meyrick), ▲, P. atricha sp. nov., ♥, P. sigmoides sp. nov., unplaced spp.: ■, P. triangularis sp. nov., ♣, P. diplobathra (Meyrick); 4, the nesoclera- group:●, P.nesoclera (Meyrick), ♥, P.acinacea sp. nov., unplaced spp.: ■, P. acuticula sp. nov., ▲, P.spinevalva sp. nov., ♣, P. chelophora (Meyrick).

FIGURES15-18.Male antenna of Palumbina spp.15, P.acuticula sp. nov.; 16, P.acerosa sp. nov., slide no. ZJL05043H; 17, P. sineloba sp. nov., slide no. LGE16033H; 18, P. atricha sp. nov., slide no. NKLGE006. (Scale bars = 0.1 mm). Arrows indicate unseparated flagellomeres I and II.

FIGURES 34-39. Male sternum VIII of Palumbina spp. 34, P.guerinii (Stainton), slide no. ZMUC-NK01; 35, P. magnisigna sp. nov., slide no. LGE16266; 36, P. melanotricha sp. nov., slide no. LGE16060; 37, P.atricha sp. nov., slide no. LGE16298; 38, P.sigmoides sp. nov., slide no. LGE16301; 39, P.nesoclera (Meyrick), slide no. LGE16292. (Scale bars = 0.5 mm).

FIGURES 52-57. Posterior margin of female abdomen. 52, P. guerinii (Stainton), slide no. ZMUC-NK02; 53, P. grandiunca sp. nov., slide no.LGE16044; 54, P.operaria (Meyrick), slide no.LGE16040; 55, P. rugosa sp. nov., slide no. LGE17015; 56, P. atricha sp. nov., slide no. LGE16341; 57, P.nesoclera (Meyrick), slide no.LGE16048.(Scale bars = 0.5 mm).

FIGURES 65-72. Adults of Palumbina spp. 65, P. guerinii (Stainton), ♀, collected from Greece; 66, P. oxyprora (Meyrick), ♀; 67, P.magnisigna sp. nov., ♂, holotype; 68, P.grandiunca sp. nov., ♂, holotype; 69, P.melanotricha sp. nov., ♂, holotype; 70, P.macrodelta (Meyrick), collected from Hainan, ♀; 71, P.macrodelta (Meyrick), collected from Yunnan, ♀; 72, P. atricha sp. nov., ♂, holotype.(Scale bars = 2.0 mm).

FIGURES 73-80. Adults of Palumbina spp. 73, P.atricha sp. nov., ♀, paratype; 74, P.sigmoides sp. nov., ♂, holotype; 75, P. sigmoides sp. nov., ♀, paratype;76, P.nesoclera(Meyrick), ♀; 77, P.acinacea sp. nov., ♂, holotype;78, P.pylartis (Meyrick), ♂; 79, P.sineloba sp. nov., ♂, holotype; 80, P.spinevalva sp. nov., ♂, holotype.(Scale bars = 2.0 mm).

FIGURES94-99.Male genitalia of Palumbinaspp.94, P.macrodelta(Meyrick), slideno.LGE16187,collected fromYunnan; 95, P. atricha sp. nov., slide no. LGE16298, holotype; 96, P. sigmoides sp. nov., slide no. LGE16045, holotype; 97, P. nesoclera (Meyrick), slide no. LGE16292; 98, P. acinacea sp. nov., slide no. LGE16321, paratype; 99, P. pylartis (Meyrick), slide no. LGE16315, AL, anellus lobe, MP, medial process, PJ, process of juxta.(Scale bars = 0.2 mm).

FIGURES 114-117. Female genitalia of Palumbina spp. 114, P. atricha sp. nov., slide no. LGE16341, paratype; 115, P. Sigmoides sp. nov., slide no. LGE16046, paratype, 115a, enlarged view of colliculum; 116, P. nesoclera (Meyrick), slide no. LGE16048;117, P.acinacea sp. nov., slide no. LGE16334, paratype.(Scale bars = 0.4 mm).