Thiotricha rosatorna, Lee & Li, 2024

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 : 58-59

publication ID	https://doi.org/ 10.11646/zootaxa.5449.1.1
publication LSID	lsid:zoobank.org:pub:CAC513A2-D2B4-4E6E-BAB6-CCE6E054680F
DOI	https://doi.org/10.5281/zenodo.11233032
persistent identifier	https://treatment.plazi.org/id/03CC3667-9802-1D45-FF05-8FB8DE88E292
treatment provided by	Plazi
scientific name	Thiotricha rosatorna
status	sp. nov.

Treatment

Thiotricha rosatorna sp. nov.

( Figs 10D View FIGURE 10 , 24O View FIGURE 24 , 34E View FIGURE 34 , 51F View FIGURE 51 )

Type material. Holotype ♂, CHINA, Guangxi Zhuang Autonomous Region, Huaping Nature Reserves (24.85°N, 106.38°E), 950 m, 8.viii.2006, leg. Weichun Li, genitalia slide no. LGE16028 GoogleMaps . Paratypes. CHINA: Guangxi Zhuang Autonomous Region : 1 ♀, same data as holotype except 6.viii.2006, genitalia slide no. LGE18298 GoogleMaps ; Jiangxi Province: 1 ♂, Mt. Sanqing (28.9°N, 118.07°E), 1120 m, Yushan County, 20.viii.1985, genitalia slide no. W98136 GoogleMaps ; Zhejiang Province: 2 ♀♀, Wuyanling (27.35°N, 119.92°E), 680 m, Taishun County, 29.vii, 2.viii.2005, leg. Haili Yu, genitalia slide no. ZJL05494 GoogleMaps ; 4 ♂♂, Baishanzu Nature Reserves (27.73°N, 119.17°E), 1149 m, Qingyuan County, 14–17.viii.2016, leg. Qingyun Wang, Meiqing Yang and Ping Liu, genitalia slide no. LGE16264 GoogleMaps .

Diagnosis. Compared to other species of the confluens -group, the width of wings, especially hindwing, of T. rosatorna is broader and the carmine-pink patch on tornus is diagnostic. The male genitalia are similar to those of T. confluens , but the valva is more uniformly elongate, the anellus lobe is shorter and the aedeagus has serrated ventral margin near the apex in T. rosatorna . The female genitalia are characterized by the large ostium bursae and the signum with four projections.

Description. Adult ( Fig. 10D View FIGURE 10 ). Wingspan 13.0–15.0 mm. Head white to cream. Labial palpus light ochre, segment II strongly mixed with white. Antenna with scape light ochre except dorsal surface white; flagellum mixed light ochre and brown, basal 1/2 of dorsal surface white, male cilia slightly longer than diameter. Thorax white, posteriorly mixed with cream or light ochre. Tegula white. Forewing ground color light ochre, apical area mixed with white, sometimes leaving a small, white triangular patch on termen; anterior edge of costa black in basal 1/3; apical spot very small, bordered inwardly by grey scales; dorsum with a very large, semicircular or rectangular patch in basal 1/3 and after middle of wing, respectively, one in basal 1/3 smaller; other markings dark brown: a small spot at base, sometimes extended to costa; a shot, narrow, outwardly oblique costal streak from distal 1/4, tinged outwardly with white scales, sometimes reaching apical spot; just beyond this, another costal streak in parallel with former streak, narrowly extended to apex above apical spot; a very broad, outwardly oblique band arising from base of dorsum, gradually narrowed, extending over first white patch along subcosta, slightly curved downward from distal 1/3, nearly reaching apical spot and sometimes connected to apical spot by a slender pink line; another broad, outwardly oblique band arising from middle of dorsum, gradually narrowed, extending over second white patch, confluent with former band at distal 1/3 of wing; a somewhat indistinct spot near tornus below former band, its outer margin meeting a large, subtriangular carmine-pink patch on tornus; fringe at apex light ochre, on termen carmine-pink with a metallic terminal band, on dorsum brown. Hindwing dark brown; fringe brown except apical area cream with a terminal dark brown band. Legs white; fore femur, tibia and tarsus mixed black and light ochre on outer surface; mid tibia with a black spot near apex; mid tarsus with tarsomere I black at middle, II and III with basal half black; hind tibia with an oblique light ochre streak near apex; hind tarsus as in mid tarsus except markings light ochre.

Male sternum VIII ( Fig. 24O View FIGURE 24 ).Approximately 1/5 length of abdomen, with lateral margins gradually narrowed, bifurcate from posterior 1/5; inner margin U-shaped, each tine somewhat stout, sharply pointed at apex.

Male genitalia ( Fig. 34E View FIGURE 34 ). Uncus tongue-shaped. Gnathos hook long and simple. Tegumen approximately 3 times as long as uncus. Valva slender, almost uniformly elongate from base to distal 1/4, slightly broadened in distal 1/4, rounded at apex; ventral margin nearly straight or slightly convex at middle. Anellus lobe slender and digitate, approximately 1/7 or 1/6 length of valva; apical bristle 1/3 or 1/2 of anellus lobe. Juxta with basal 2/3 of inner margin broadly convex and sparsely setose. Vinculum triangular medially. Saccus tongue-shaped, round at apex, not exceeding tegumen pedunculus. Aedeagus with basal 2/5 dilated, then slightly narrowed and cylindrical medially, strikingly broadened near apex, dorsal margin of apical 1/4 serrate.

Female genitalia ( Fig. 51F View FIGURE 51 ). Papillae anales moderately sclerotized, anterior margin with a linear sclerotization extended from apophyses posteriores. Apophyses anteriores as long as apophyses posteriores. Tergum VIII nearly straight on posterior margin. Sternum VIII longer than tergum VIII, anterior margin strongly produced in U-shape. Ostium bursae very large and opening in anterior 2/3 of sternum VIII.Antrum stout, well-sclerotized. Ductus bursae narrow at base, abruptly broadened from posterior 1/5, then uniformly elongate to corpus bursae; ductus seminalis arising from near anterior margin of antrum. Corpus bursae ovate, as long as ductus bursae; signum situated at middle, basal plate round, bearing a small projection on posterior margin, two smaller projections at middle and a larger semicircular projection on anterior margin.

Distribution. China (Guangxi, Jiangxi, Zhejiang).

Etymology. The species name is derived from Latin prefix rosa- (rose) and tornus, referring to the pink tornus.