Thiotricha oxygramma Meyrick 1918
Creators: name: Lee, Ga-Eun
name: Li, Houhun
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Gelechiidae
Thiotricha
Thiotricha oxygramma

description: Thiotricha oxygramma Meyrick, 1918   
(Figs 20B, 27I, 28G, 43E, M, 60D, 66E, F, 73B)  
 Thiotricha oxygramma Meyrick, 1918: 123; 1925: 102; Gaede, 1937: 306; Clarke, 1969: 464; Ivinskis et al., 1984: 39. TL: Assam, India. TD: NHMUK.   
 Type material (Figs 66E, F, 73B). Holotype ♀, INDIA, Assam, Khasi Hills, x.1906, genitalia slide no. J. F.G.C. 8368 (NHMUK).   
 Additional material examined. CHINA: Hainan Province: 1 ♀, Dialuoshan Nature Reserves (18.73°N, 109.87°E), 980 m, Lingshui County, 24.iv.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu, genitalia slide no. LGE18360; 1 ♂, Jianfengling Nature Reserves (18.74°N, 108.84°E), 1050 m, Ledong County, 27.iv.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu, genitalia slide no. LGE18359; 1 ♀, Limushan Nature Reserves (19.17°N, 109.74°E), 640 m, 1.v.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu, genitalia slide no. LGE18791; 1 ♀, Diaoluoshan Nature Reserves (18.43°N, 109.52°E), 922 m, 25.v.2015, leg. Peixin Cong, Wei Guan and Sha Hu; 1 ♀, Shuiman Town (18.88°N, 109.67°E), 766 m, Wuzhishan City, 27.ii.2016, leg. Qingyun Wang, Suran Li and Shengnan Zhao, genitalia slide no. LGE18792; Yunnan Province: 3 ♂♂, Mt. Xiaohei, 2300 m, Longling County, 10.viii.2005, leg. Yingdang Ren, genitalia slide nos. ZJL05385, ZJL05386; 1 ♂, 6 ♀♀, Xiaoheishan Nature Reserves (24.52°N, 98.84°E), 1974 m, Longling County, 17–19.vii.2013, leg. Shurong Liu, Yuqi Wang and Kaijian Teng, genitalia slide no. LGE18706f; 9 ♂♂, 22 ♀♀, Taiyanghe Nature Reserves (22.79°N, 100.98°E), 1450 m, 31.iii−28. viii.2014, leg. Zhenguo Zhang, genitalia slide no. LGE 18788m; 2 ♂♂, 2 ♀♀, Baoshan (24.82°N, 98.78°E), 2009 m, 10.viii.2014, leg. Kaijian Teng, Shurong Liu and Hua Rong; 1 ♂, 1 ♀, Xiaodifangxincun (24.87°N, 98.75°E), 2116 m, Tengchong County, 12.viii.2014, leg. Kaijian Teng, Shurong Liu and Hua Rong; 1 ♂, 2 ♀♀, Linjiapu (25.29°N, 98.70°E), 2144 m, Tengchong County, 15, 16.viii.2014, leg. Kaijian Teng, Shurong Liu and Hua Rong; 1 ♂, 9 ♀♀, Taiyanghe Nature Reserves, Pu’er City, 7–9.vi.2015, leg. Zhenguo Zhang, genitalia slide no. LGE18789f; 1 ♂, Yuyingtang, 1450 m, Taiyanghe Nature Reserves, Pu’er City, 24.iv.2015, leg. Kaijian Teng; 1 ♂, Taiyanghe National Forest Park (22.79°N, 100.98°E), 1450 m, Pu’er City, 3.vii.2015, leg. Kaijian Teng; 1 ♂, Yexianggu (22.17°N, 100.87°E), 762 m, Xishuangbanna, 13.vii.2015, leg. Kaijian Teng and Xia Bai; 7 ♂♂, 3 ♀♀, Nankang Forest Station (24.82°N, 98.78°E), 2009 m, Baoshan City, 16, 17.vii.2015, leg. Kaijian Teng and Xia Bai; 5 ♂♂, 17 ♀♀, Gaoligongshan (24.83°N, 98.77°E), 2157 m, Baoshan City, 23, 24.vii.2015, leg. Kaijian Teng and Xia Bai, genitalia slide no. LGE18790f; 36 ♂♂, 45 ♀♀, Xiaoheishan Nature Reserves (24.52°N, 98.84°E), 1974 m, Longling County, 27–30.vii.2015, leg. Kaijian Teng and Xia Bai, genitalia slide nos. LGE 18357m, LGE18358f; 2 ♀♀, Xiajinguang (23.17°N, 104.8°E), 1470 m, Malipo County, Wenshan City, 26, 27.vii.2016, leg. Kaijian Teng, Ga-Eun Lee and Tao Wang.   
 Diagnosis. Adult (Fig. 20B). Wingspan 9.0− 12.5 mm. The forewing of T. oxygramma is much darker than those of related species and lacks the dark suffusion or streaks on dorsum. The male genitalia (Fig. 43E, M) are characterized by the bulged ventral margin of valval base and the very reduced, minute anellus lobe. The female genitalia (Fig. 60D) closely resemble those of T. lata, but can be differentiated from the species by having a larger colliculum situated close to ostium bursae, the ductus bursae nearly as long as corpus bursae and the signum situated at middle of corpus bursae.   
 Distribution. China (Hainan, Yunnan), India.   
 Remarks. This species is recorded from China for the first time.
description: Published as part of Lee, Ga-Eun & Li, Houhun, 2024, A taxonomic review of Thiotricha Meyrick, 1886 (Lepidoptera, Gelechiidae, Thiotrichinae) from China, with descriptions of 84 new species, pp. 1-222 in Zootaxa 5449 (1) on page 140, DOI: 10.11646/zootaxa.5449.1.1, http://zenodo.org/record/11233121