Thiotricha recticiliaris 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 recticiliaris

description: Thiotricha recticiliaris sp. nov.   
(Figs 19G, H, 27G, 28E, 43C, K, 60B)  
 Type material. Holotype ♂, CHINA, Yunnan Province, Taiyanghe Nature Reserves (22.79°N, 100.98°E), 1450 m, 4.viii.2014, leg. Zhenguo Zhang, genitalia slide no. LGE18765. Paratypes: 14 ♂♂, 3 ♀♀, same data as holotype except 11.v–5.ix.2014, genitalia slide nos. LGE 18773m, LGE18768f, LGE18801f, LGE18812f.   
 Diagnosis. The species is closely related to T. pediformis and T. curviciliaris, but the second tarsomere of the hind leg is black in basal half whereas the second and third tarsomeres are black in basal half in the latter two species. The males of T. recticiliaris are unique as the forewing costa has a row of straight black ciliae in basal 1/3 (Fig. 19H). A similar ciliation is found in T. curviciliaris but the ciliae are curved.   
 Description. Adult (Figs 19G, H). Wingspan 10.0−11.0 mm. Head glossy white to creamy white. Labial palpus creamy white; segment III fuscous ventrally and apically, as long as II. Antenna with scape white; flagellum fuscous except basal 1/3 of dorsal surface white, male cilia slightly longer than diameter. Thorax white, posterior half with a fuscous median streak. Tegula white. Forewing glossy white to creamy white, anterior edge of costa black, male with a row of black ciliae arising from anterior edge of costa in basal 1/3 of wing, markings black: a wedge-shaped costal streak from between distal 1/4 and 1/3 of wing, attenuated distally, outwardly oblique toward apex, usually reaching apical spot, followed by and confluent with a shorter costal streak extended from distal 1/5 of wing; apical spot round, sometimes shortly extending along termen; a fuscous to black suffusion along dorsum from near base to basal 3/5 of wing, followed by an inwardly directed V-shaped marking, the upper fork of this usually reaching apical spot and confluent with costal streaks, the lower fork much shorter and running along fold; fringe on apical area dirty-white with subterminal and terminal black bands, produced downwards and bifurcate; fringe on termen dark fuscous except base dirty-white, near apex with a row of coarse metallic fuscous ciliation; fringe on dorsum fuscous. Hindwing dark grey except subapex dirty-white; fringe grey to fuscous except apical area dirty-white with a terminal black band. Legs white, fore coxa strongly suffused with dark fuscous; fore femur, tibia and tarsus black on outer surface; mid femur black at apex; mid tibia with a short black streak near apex; mid tarsus with first tarsomere broadly black at middle, II–III tarsomeres black in basal half; hind tibia usually fuscous along dorsal margin, with a short black streak near apex; hind tarsus with first tarsomere broadly black at middle, II tarsomere black in basal half.   
 Abdominal segments (Figs 27G, 28E). In both male and female, tergum I melanized at middle, weaker in female. In male, sternum VIII 1/5 length of abdomen; lateral margins broadly concave in basal 2/3, then slightly convex; bifurcate after middle, inner margin of two tines forming a V-shape, its apex pointed; tergum VIII sclerotized as a subtrapezoidal plate, bearing long coremata bilaterally.   
 Male genitalia (Figs 43C, K). Uncus broad, oval. Gnathos hook long and slender, sharply pointed apically. Valva narrow, with inner margin slightly bulged at base, then uniformly elongate to near apex, apical 1/3 slightly broadened, rounded at apex. Anellus lobe very short, obovate, bearing a short apical bristle. Juxta broadly convex in basal 2/3. Vinculum simple, narrow. Saccus short and slender, not exceeding tegumen pedunculus. Aedeagus with basal 2/5 dilated, uniform at middle, slightly broadened apically.   
 Female genitalia (Fig. 60B). Papillae anales weakly sclerotized. Apophyses anteriores approximately 2/3 length of apophyses posteriores. Sternum VIII with anterior margin strongly produced in U-shape. Ostium bursae opening near anterior margin of sternum VIII. Ductus bursae narrow at base, then gradually broadening toward corpus bursae; a short linear sclerite placed at base, extending to colliculum; colliculum triangular, situated at posterior 1/3; ductus seminalis anterior to colliculum. Corpus bursae elliptical, 1.5 times as long as ductus bursae; signum rounded, consisting of minute denticles, placed at anterior 3/5.   
 Distribution. China (Yunnan).   
 Etymology. The species name is derived from Latin, rectus (straight) and ciliaris (with ciliae), referring to the straight ciliae present in the forewing costa of males.
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 137-138, DOI: 10.11646/zootaxa.5449.1.1, http://zenodo.org/record/11233121