Thiotricha rosegrammica 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 rosegrammica

description: Thiotricha rosegrammica sp. nov.   
(Figs 21B, 27P, 44F, 61E, 61 Ea)  
 Type material. Holotype ♂, CHINA, Xizang Autonomous Region, Motuo County, 80K (29.66°N, 95.49°E), 2076 m, 6.viii.2018, leg. Mujie Qi, genitalia slide no. LGE18619. Paratypes. CHINA: Xizang Autonomous Region: 1 ♂, same data as holotype except 7.viii.2018, genitalia slide no. LGE18620; 1 ♀, 2059 m, Motuo County, 7.viii.2017, leg. Mujie Qi and Xiaofei Yang, genitalia slide no. LGE18185.   
 Diagnosis. This new species can easily be distinguished from its congeners by the strikingly colored forewing with carmine-pink streaks on dark ground. The superficial appearance, especially the pink markings and the falcate forewing apex, reminds one of the confluens -group species, but the apex of T. rosegrammica is round with the elongated apical ciliation. The male genitalia are unusual in the genus as the juxta is not divided into two lobes. Instead, it is strongly convex medially and it bears two short lateral projections. The female genitalia are unique as the papillae anales has a linear sclerotization along the posterior edge (Fig. 61 Ea).   
 Description. Adult (Fig. 21B). Wingspan 9.5–10.0 mm. Head white to cream. Labial palpus mixed white and light orange; segment III slightly longer than II, dark fuscous ventrally and apically. Antenna with scape white to cream; flagellum dark brown except basal half of dorsal surface white to cream, male cilia shorter than diameter. Thorax carmine-pink, with a fuscous median streak. Tegula pink anteriorly mixed with cream and light orange, anterior edge black. Forewing ground color fuscous, with distal 1/4 strongly mixed with ochre; a very slender, light orange streak running from base to near apex along costa; a short, carmine-pink costal streak at distal 1/5 of wing, its base cream, tinged outwardly with black; apical spot small, surrounded by carmine-pink scales; four carmine-pink longitudinal streaks running from base to near apex: first streak near costa, very slender, broadened distally and curved toward tornus, nearly meets former costal streak; second streak above fold, broad, gradually attenuated distally, not reaching former; third streak below fold, broad, gradually attenuated distally, broadly interrupted beyond middle by ochreous scales extending from dorsum, curved toward apex from distal 1/4 of wing and confluent with costal streak and first longitudinal streak; fourth streak running along basal half of dorsum, somewhat indistinct; termen carmine-pink; fringe on apical area dark fuscous with base cream, falcate; fringe on termen carmine-pink, with a coarse, metallic black terminal band; fringe on dorsum brown. Hindwing dark grey, subapex mixed cream and pink, black at apex; fringe brown except apical area cream with a terminal black band. Legs white to cream, slightly mixed with light orange; fore femur, tibia and tarsus black on outer surface; mid tibia slightly tinged with black at base; hind tibia with a short, black, oblique streak near apex; mid and hind tarsi with first tarsomere black at middle, remaining tarsomeres ringed with black basally.   
 Male sternum VIII (Fig. 27P). 1/5 length of abdomen, narrow, subtriangular, gradually tapering toward posterior apex; posterior 1/3 bifurcate.   
 Male genitalia (Fig. 44F). Uncus rectangular, slightly widening toward apex. Gnathos hook simple, moderately long. Tegumen approximately 3 times as long as uncus. Valva with costa broadly convex in basal half, inner margin nearly straight before apex, distal 1/4 slightly broadened and densely setose. Anellus lobe slender and digitate, 1/4 length of valva; apical bristle straight, 1/2 length of anellus lobe. Juxta with a single merged lobe, broad, subrectangular, lateral margins with a short and setose projection. Vinculum simple and slender. Saccus short, subtriangular, not exceeding tegumen pedunculus. Aedeagus with basal 2/5 dilated, distal part narrowed and straight, distal 1/5 abruptly constricted, with a tooth near apex dorsally.   
 Female genitalia (Figs 61E, 61 Ea). Papillae anales with a linear sclerotization along posterior edge. Apophyses anteriores 2/3 length of apophyses posteriores. Tergum VIII membranous except lateral margins. Sternum VIII sub-rectangular. Ostium bursae club-shaped. Ductus bursae slender, gradually broadening toward corpus bursae, with colliculum at posterior 1/6, ductus seminalis anterior to colliculum. Corpus bursae elongate-ovate, approximately 1/2 length of ductus bursae; signum large, semielliptical with a central ridge, situated in posterior 1/2 near the entrance of ductus bursae.   
 Distribution. China (Xizang).   
 Etymology. The species name is derived from Latin, roseus (rosy) and grammicus (striped), referring to the carmine-pink streaks on the forewing.
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 149-150, DOI: 10.11646/zootaxa.5449.1.1, http://zenodo.org/record/11233121