Thiotricha corylella 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

Thiotricha corylella Omelko, 1993

( Figs 13E , 25R , 38D , 54E )

Thiotricha corylella Omelko, 1993: 209 ; 1999: 179; Ueda & Fujiwara, 2005: 75. TL: Russia. TD: ZIRAS.

Polyhymno corylella : Ponomarenko et al., 2006: 107; Park & Ponomarenko, 2007: 39; Ponomarenko, 2008: 91; Sakamaki, 2013: 47, 296.

Material examined. CHINA: Hubei Province: 1 ♂, 2 ♀♀, Taohuachong (30.98°N, 116.02°E), 635 m , Yingshan County, 24, 25.vi.2014, leg. Wei Guan and Meiqing Yang, genitalia slide nos. LGE 16147m , LGE18546f, LGE 18547m; 1 ♀, Wujiashan (31.09°N, 115.8°E), 880 m , Yingshan County, 29.vi.2014, leg. Wei Guan and Meiqing Yang, genitalia slide no. LGE16150 ; Jilin Province: 1 ♂, Toudao Protection Station (42.38°N, 128.03°E), 750 m , Mt. Changbai , 16.vii.2016, leg. Mujie Qi, Yanyan Jia and Juan Li, genitalia slide no. LGE16272 .

Diagnosis. Adult ( Fig. 13E ). Wingspan 12.0− 14.5 mm. This species can be recognized by the white forewing with longitudinal streaks in the distal half. A fuscous broad band is sometimes present from the middle of costa to the basal 1/3 of dorsum across wing, but it is often broadly interrupted by the white ground color, leaving two large patches on the costa and the dorsum, respectively. The male genitalia ( Fig. 38D ) are very similar to those of T. fuscobasis , but T. corylella has a larger anellus lobe bearing a robust apical bristle. The anellus lobe of T. fuscobasis is very reduced and the apex is sparsely setose instead of having a hooked bristle.

Distribution. China (Hubei, Jilin), Japan, Russia (Primorsk Territory).

Remarks. This species has two brown streaks on the thorax according to the original description, but these are absent in the Chinese specimens examined and the thorax is entirely white.

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).