Thiotricha grandimacula, 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 : 65-67

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.11233046
persistent identifier	https://treatment.plazi.org/id/03CC3667-987B-1D3D-FF05-88C0DFA3E682
treatment provided by	Plazi
scientific name	Thiotricha grandimacula
status	sp. nov.

Treatment

Thiotricha grandimacula sp. nov.

( Figs 11C View FIGURE 11 , 25B View FIGURE 25 , 35F View FIGURE 35 , 52C View FIGURE 52 )

Type material. Holotype ♂, CHINA, Yunnan Province, Taiyanghe Nature Reserves (22.79°N, 100.98°E), 1450 m, 2.ix.2014, leg. Zhenguo Zhang, genitalia slide no. LGE18234 GoogleMaps . Paratypes. CHINA: Yunnan Province: 6 ♂♂, 1 ♀, same data as holotype except 31.iii−5.ix.2014 GoogleMaps , genitalia slide nos. LGE 16273m, LGE 16365m, LGE18235f, LGE 18288m; 1 ♀, Bubang (21.60°N, 101.59°E), 656 m, Xishuangbanna , 22.vii.2014, leg. Kaijian Teng, Wei Guan, Xiuchun Wang and Shurong Liu GoogleMaps ; 1 ♀, Taiyanghe Nature Reserves, Pu’er City , 8.vi.2015, leg. Zhenguo Zhang , genitalia slide no. LGE18289; 1 ♀, Yexianggu (22.17°N, 100.87°E), 762 m, Xishuangbanna , 11.vii.2015, leg. Kaijian Teng and Xia Bai GoogleMaps ; 1 ♂, Yexianggu (22.17°N, 100.87°E), 762 m, Jinghong City , 10.viii.2016, leg. Kaijian Teng, Ga-Eun Lee and Tao Wang. GoogleMaps

Diagnosis. Superficially, this species resembles T. jianfengensis and T. grammitis Meyrick, 1908 ( Fig. 63E View FIGURE 63 ), but the costal spot at basal 1/3 of the forewing is larger in T. grandimacula . The male genitalia of T. grandimacula are very similar to those of T. grammitis ( Fig. 69C View FIGURE 69 ), but anellus lobes are longer and narrower in the former. Female genitalia of T. grandimacula share some morphological characteristics with T. confluens and T. rosatorna such as the presence of a linear sclerotization along anterior margin of papillae anales and round signum bearing inner projections. In T. grandimacula , however, the projections near the posterior margin of signum are larger in number and smaller in size.

Description. Adult ( Fig. 11B View FIGURE 11 ). Wingspan 10.5–13.0 mm. Head, labial palpus and antenna as in T. jianfengensis . Thorax whitish ochre, tinged with fuscous posteriorly. Tegula whitish ochre. Forewing ground color whitish ochre, anterior edge of costa black in basal 1/3, slightly suffused with dark fuscous at 2/3 of wing, apical area strongly mixed with white; markings black: a large oval costal spot at basal 1/3; beyond this, three longitudinal streaks running from dark suffusion at 2/3, converging to near apex and nearly reaching apical spot; a somewhat indistinct streak running from subapex to apex along costa; apical spot small and indistinct, narrowly extending toward tornus along termen; a short, outwardly oblique streak from near basal 1/3 of dorsum, extending to fold; an elliptical spot or short streak at basal 1/4 bellow fold, indistinct in some individuals; fringe whitish ochre to light grey. Hindwing dark grey except apex dirty white; fringe dark grey except apical area dirty white with a terminal black band. Legs as in T. jianfengensis .

Male sternum VIII ( Fig. 25B View FIGURE 25 ). Lateral margins gradually narrowed, posterior margin broadly concave in Ushape, leaving two short tines with pointed apex.

Male genitalia ( Fig. 35E View FIGURE 35 ). Uncus tongue-shaped, with base narrow. Gnathos hook moderately long. Tegumen approximately 3 times as long as uncus. Valva with base narrow, ventral margin gradually broadening to middle, then almost uniformly elongate to apex, rounded apically. Anellus lobe rod-shaped, slightly shorter than 1/5 length of valva, round at apex; apical bristle straight, 1/3 length of anellus lobe. Vinculum triangular medially. Saccus broad, U-shaped, slightly exceeding tegumen pedunculus. Aedeagus slightly curved, dilated at base, then gradually narrowed to apex, ventral margin with a hummock-like process at middle, somewhat rounded apically.

Female genitalia ( Fig. 52C View FIGURE 52 ). Papillae anales moderately sclerotized, anterior margin with a linear sclerotization extended from apophyses posteriores. Apophyses anteriores slightly shorter than apophyses posteriores. Sternum VIII with anterior margin strongly produced. Ostium bursae very large and opening in anterior 2/3 of sternum VIII. Antrum stout, well-sclerotized. Ductus bursae slightly broadened after base, almost uniformly elongate to corpus bursae; ductus seminalis arising from near anterior margin of antrum. Corpus bursae ovate, slightly longer than ductus bursae; signum situated at middle, basal plate somewhat round, bearing four small projections in posterior 1/3 and a large semicircular projection on anterior margin.

Distribution. China (Yunnan).

Etymology. The species name is derived from Latin grandis (large) and macula (spot), referring to the large costal spot on the forewing.