Thiotricha fuscobasis Omelko, 1993

Lee, Ga-Eun & Li, Houhun, 2024, A taxonomic review of Thiotricha Meyrick, 1886 (Lepidoptera, Gelechiidae, Thiotrichinae) from China, with descriptions of 84 new species, Zootaxa 5449 (1), pp. 1-222 : 93-94

Thiotricha fuscobasis Omelko, 1993

( Figs 13F , 25S , 38E , 54F )

Thiotricha fuscobasis Omelko, 1993: 206 ; 1999: 177; Li et al., 2007: 372; Li & Wang, 2009: 123. TL: Russia. TD: ZIRAS. Polyhymno fuscobasis : Park & Ponomarenko, 2007: 40; Ponomarenko, 2008: 91.

Material examined. CHINA: Chongqing Municipality : 1 ♂, Tudiyan, 1200 m, Mt. Simian , 16.vii.2012, leg. Yinghui Sun and Aihui Yin ; Guizhou Province: 2 ♂♂, Maojia Village, 800 m, Mayang River , 3,4. x.2007, leg. Hui Zhen , genitalia slide no. LGE18591; 1 ♀, Xiasicun, 840 m, Kuankuoshui Conservation Zone , Suiyang County, 9.vi.2010, leg. Linlin Yang ; Hebei Province: 1 ♂, Lianhuachi, 1800 m, Mt. Wuling , Xinglong County, 1.viii.2000, leg. Yanli Du and Zhendong Li , genitalia slide no. LZD01067; 3 ♂♂, 3 ♀♀, Xiaowutai , Yu County, 1200 m, 22, 23.viii.2005, leg. Yunli Xiao , genitalia slide nos. ZJL05423m, LGE19111f; 1 ♂, 1 ♀, Shuangyuanfeng (40.61°N, 117.45°E), 800 m, Mt. Wuling , Xinglong County, 4, 6.ix.2011, leg. Qiang Gao , genitalia slide nos. LGE 15089m, LGE15090f; Henan Province: 3 ♂♂, 2 ♀♀, Mt. Baiyun (34.13°N, 112.08°E), 1400 m, 14, 15.viii.2008, leg. Houhun Li et al., genitalia slide no. LGE 15087m; Qinghai Province: 1 ♂, Dongxia, Institute of forest sciences of Qinghai , 19.viii.1991, leg. Unknown , genitalia slide no. ZJL05075; 1 ♀, Mengda, Institute of forest sciences of Qinghai , 22.viii.1994, leg. Unknown , genitalia slide no. ZJL05076; Shanxi Province: 1 ♂, Mt. Li, 1520 m, Jingcheng , 18.viii.2006, leg. Xu Zhang and Haiyan Bai ; 1 ♂, Dahe Forest (35.46°N, 111.94°E), 1202 m, Yicheng County, Linfen City , 24.vii.2013, leg. Shulian Hao and Mingjing Li ; 1 ♂, Lishan Nature Reserves, Qinshui County, Jincheng City , 30.vii.2013, leg. Shulian Hao and Mingjing Li , genitalia slide no. LGE17029; Sichuan Province: 31 ♂♂, 25 ♀♀, Rize (33.12°N, 103.88°E), 2700 m, Jiuzhaigou , 9, 13.viii.2002, leg. Shulian Hao , genitalia slide nos. ZJL05153f, LGE 18204m, LGE 19104m; 102 ♂♂, 35 ♀♀, Zezhawa (33.16°N, 103.92°E), 2400 m, Jiuzhaigou , 14–16.viii.2002, leg. Shulian Hao , genitalia slide nos. ZJL05002m, ZJL05208m, LGE 16005m, LGE16006f, LGE17214f (one male and one female are deposited in NHMUK) ; 1 ♀, Shuzheng, 2300 m, Jiuzhaigou , 17.viii.2002, leg. Shulian Hao , genitalia slide no. LGE19105; 5 ♂♂, Heye (33.23°N, 103.92°E), 2350 m, Jiuzhaigou , 18.viii.2002, leg. Shulian Hao , genitalia slide nos. ZJL05436, LGE16145; 4 ♂♂, Zharu (33.25°N, 103.97°E), 2250 m, Jiuzhaigou , 19.viii.2002, leg. Shulian Hao , genitalia slide no. LGE16156; 1 ♀, Fengtongzhai Nature Reserves (30.37°N, 102.83°E), 1600 m, Baoxing County, 2.viii.2004, leg. Yingdang Ren ; Tianjin Municipality : 1 ♂, Heishuihe, 600 m, Mt. Baxian , 27.viii.2010, leg. Yinghui Sun and Shurong Liu , genitalia slide no. LGE18383. KOREA: Gangwon-do, Jeongseon, Bukpyeong-myun , Najeon-ri , Mt. Gariwang , 28, 29.ix.2011 (N. 1057 m), leg. B. W. Lee & J. O. Lim , genitalia slide no. LGE22099 ( KNA).

Diagnosis. Adult ( Fig. 13F ). Wingspan 10.5−12.0 mm. This species can be distinguished from other species by the fuscous forewing marked with a broad white streak obliquely running from the middle of dorsum to near the apex. The male genitalia ( Fig. 38E ) are very similar to those of T. corylella , and the differences between two species are stated under the latter species. The female genitalia ( Fig. 54F ) are diagnosed by segment VIII without minute spines, the ductus bursae with a teardrop-shaped sclerite at base and the corpus bursae with a round signum situated near the posterior margin.

Distribution. China (Chongqing, Guizhou, Hebei, Henan, Qinghai, Shanxi, Sichuan, Tianjin), Korea, Russia (Primorsk Territory).

Remarks. The species was included in the phylogenetic study of Thiotrichinae ( Lee et al. 2021) and it was sister to T. corylella based on the molecular data.

Figures

FIGURE 13. Adults of Thiotricha spp. A, T. lineata sp. nov., ♂, holotype; B, T. albalata sp. nov., ♂, holotype; C, T. celata Omelko, ♂; D, ditto, ♀; E, T. corylella Omelko, ♀; F, T. fuscobasis Omelko, ♂; G, T. trichoma (Caradja), ♂; H, T. disciformis sp. nov., ♀, holotype.

FIGURE 25. Male sternum VIII of Thiotricha spp. A, T. jianfengensis sp. nov.; B, T. grandimacula sp. nov.; C, T. microrrhoda Meyrick; D, T. pancratiastis Meyrick; E, T. latistriata sp. nov.; F, T. contracta sp. nov.; G, T. projecta sp. nov.; H, T. scioplecta Meyrick; I, T. polyaula Meyrick; J, T. duristria sp. nov.; K, T. robustiseta sp. nov.; L, T. setangulata sp. nov.; M, T. macularis sp. nov.; N, T. vittaticosta sp. nov.; O, T. lineata sp. nov.; P, T. albalata sp. nov.; Q, T. celata Omelko; R, T. corylella Omelko; S, T. fuscobasis Omelko; T, T. trichoma (Caradja).

FIGURE 38. Male genitalia of Thiotricha spp. A, T. lineata sp. nov., holotype, slide no. LGE18230; B, T. albalata sp. nov., holotype, slide no. LGE18245; C, T. celata Omelko, slide no. LGE16171; D, T. corylella Omelko, slide no. LGE16147; E, T. fuscobasis Omelko, slide no. LGE18591; F, T. trichoma (Caradja), slide no. LGE16245 (Scale bars = 0.2 mm).

FIGURE 54. Female genitalia of Thiotricha spp. A, T. setangulata sp. nov., paratype, slide no. ZJL05351; B, T. macularis sp. nov., paratype, slide no. LGE18233; C, T. vittaticosta sp. nov., paratype, slide no. LGE18269; D, T. celata Omelko, slide no. LGE16172; E, T. corylella Omelko, slide no. LGE18546; F, T. fuscobasis Omelko, slide no. LGE16109 (Scale bars = 0.4 mm).