Thiotricha flaviterminata Lee & Li 2024, sp. nov.
Creators: name: Lee, Ga-Eun
name: Li, Houhun
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Gelechiidae
Thiotricha
Thiotricha flaviterminata

description: Thiotricha flaviterminata sp. nov.   
(Figs 20G, 27M, 44C, 61B)  
 Type material. Holotype ♂, CHINA, Sichuan Province, Wenchuan County, Sanjiang Town, Caoping Village (30.95°N, 103.32°E), 1557 m, 9.vii.2014, leg. Kaijian Teng, Wei Guan, Weichun Li and Shurong Liu, genitalia slide no. LGE18251. Paratypes. CHINA: Sichuan Province: 2 ♂♂, 3 ♀♀, same data as holotype except 9, 11.vii.2014, genitalia slide nos. LGE 16205m, LGE16206f, LGE18252f; 4 ♂♂, Bifengxia (30.07°N, 102.97°E), 1115 m, Ya’an City, 28.vi.2016, leg. Kaijian Teng and Xiaofei Yang, genitalia slide no. LGE16287; Henan Province: 1 ♀, Mt. Baotianman (33.52°N, 111.94°E), 1350 m, Neixiang County, 15.vii.1998, leg. Houhun Li, genitalia slide no. LGE18253; 1 ♀, Mt. Baiyun (34.18°N, 112.45°E), 1560 m, Luoyang City, 22.vii.2001, leg. Dandan Zhang, genitalia slide no. ZJL05276; Hubei Province: 1 ♂, Mt. Bagua (32.09°N, 109.67°E), 790 m, Zhuxi County, 12.vii.2017, leg. Wanding Qi et al., genitalia slide no. LGE17077.   
 Diagnosis. The species is distinguished from congeners by the mostly white forewing with only short dark fuscous costal streaks and yellow apex. The male and female genitalia are diagnosed by the digitate anellus lobe bearing two hooked bristles and the corpus bursae with two signa, respectively. The female genitalia having more than one signum are unusual in the genus.   
 Description. Adult (Fig. 20G). Wingspan 10.5−13.5 mm. Head white. Labial palpus white; segment III as long as II, apical half fuscous on ventral surface. Antenna with scape white; flagellum dark brown to fuscous except basal 1/3 or 1/2 of dorsal surface white, male cilia as long as diameter. Thorax and tegula white. Forewing ground color white, anterior edge of costa black in basal half; apical spot very small and round; markings dark fuscous: two costal streaks from distal 1/3 and 1/5 of wing, respectively, first streak much wider, attenuated toward apex, confluent with second streak before apical spot, sometimes shortly curved inwardly; second streak slender, sometimes indistinct; beyond this, costa and anterior 1/3 of termen yellow; fringe on apical area creamy white with subterminal and terminal fuscous bands, on termen yellow except distal half fuscous, on dorsum white. Hindwing grey except apex white; fringe creamy white to light grey, apical area with a somewhat indistinct, fuscous terminal band. Legs white; fore femur, tibia and tarsus dark fuscous on outer surface; mid tibia with a short, oblique fuscous streak before apex; mid and hind tarsi with first tarsomere fuscous medially, remaining tarsomeres fuscous basally.   
 Male sternum VIII (Fig. 27M). Approximately 1/6 length of abdomen, elongate trapezoidal, posterior apex concave.   
 Male genitalia (Fig. 44C). Uncus broadly oval, sparsely setose along apical margin. Gnathos hook simple, moderately long. Tegumen approximately 3 times as long as uncus. Valva slender, almost uniformly elongate, distal half densely setose, rounded at apex. Anellus lobe digitate, approximately 1/3 length of valva, bearing two hooked apical bristles. Juxta produced at base of inner margin. Vinculum simple, broad. Saccus triangular or pentagonal, slightly exceeding tegumen pedunculus. Aedeagus with basal half dilated, then gradually narrowed toward apex, apex slightly twisted.   
 Female genitalia (Fig. 61B). Papillae anales weakly sclerotized except base of apophyses posteriores.Apophyses anteriores slightly longer than 1/2 length of apophyses posteriores. Tergum VIII very weakly sclerotized. Sternum VIII deeply concave posteriorly, produced anteriorly in U-shape. Ostium bursae round or somewhat flask-shaped. Ductus bursae narrow, antrum weakly developed, ductus seminalis arising from anterior 1/5 or 1/6; small and round signum near entrance of corpus bursae, consisting of minute denticles. Corpus bursae obovate or elliptical, as long as ductus bursae; signum round, near posterior margin, larger than the one on ductus bursae, bulged inward, with minute denticles.   
 Distribution. China (Henan, Hubei, Sichuan).   
 Etymology. The species name is derived from Latin, flavus (yellow) and terminatus (terminated), referring to the yellow-tipped forewing.   
 Remarks. This species was included in the phylogenetic study of Thiotrichinae (Lee et al. 2021) as Thiotricha sp. 8. The genetic sequences are available from GenBank.
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 pages 146-147, DOI: 10.11646/zootaxa.5449.1.1, http://zenodo.org/record/11233121