Thiotricha hexanesa Meyrick, 1929

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 : 153-154

Thiotricha hexanesa Meyrick, 1929

( Figs 21G , 27T , 45D , 67C, D , 74B )

Thiotricha hexanesa Meyrick, 1929: 500 ; Clarke, 1969: 460; Ivinskis et al., 1984: 39. TL: Sri Lanka ( Ceylon). TD: NHMUK. Thiotricha hexanessa : Gaede, 1937: 305. Misspelling.

Type material ( Figs 67C, D , 74B ). Holotype ♂, CEYLON, Maskeliya , vi.1907, leg. J. Pole, genitalia slide no. J. F.G.C. 8362 ( NHMUK).

Additional material examined. CHINA: Hainan Province: 1 ♂, Jianfengling Nature Reserves (18.44°N, 108.52°E), 770 m, Ledong County, 31.v.2015, leg. Peixin Cong, Wei Guan and Sha Hu, genitalia slide no. CMT16346 ; 2 ♂♂, Tianchi (18.73°N, 108.87°E), 787 m, Jianfengling, 13, 15.vii.2015, leg. Qingyun Wang, Suran Li and Mengting Chen, genitalia slide nos. NKLGE014, LGE16240 .

Diagnosis. Adult ( Fig. 21G ). Wingspan 10.0 mm. Superficially, T. hexanesa is somewhat similar to the members of the subocellea -group as it has a greyish forewing sprinkled with dark fuscous or black scales. However, T. hexanesa is different not only from the subocellea -group but also from most of the congeneric species as it does not have an apical spot and dark apical ciliation. This species is distinguished from other species by the forewing with distinct six black spots situated from near base to distal 1/4 and the smaller black spots scattered along the costa and the dorsum in distal half of the wing. The male genitalia are diagnosed by the broad tongue-shaped uncus, the uniform and straight valva and the elliptical anellus lobe bearing two long bristles, one at apex and the other near apex.

Distribution. China (Hainan), Sri Lanka.

Remarks. This species is recorded from China for the first time.

Figures

FIGURE 21. Adults of Thiotricha spp. A, T. acicularis sp. nov., ♀, paratype; B, T. rosegrammica sp. nov., ♂, holotype; C, T. canimaculata sp. nov., ♂, holotype; D, T. hoplomacha Meyrick, ♂; E, F, T. embolarcha Meyrick, ♂; G, T. hexanesa Meyrick, ♂; H, T. acrantha Meyrick, ♀.

FIGURE 27. Male sternum VIII of Thiotricha spp.A, T. asymmetricosta sp. nov.; B, T. aurea sp. nov.; C, T. lata sp. nov.; D, T. emarginata sp. nov.; E, T. pediformis sp. nov.; F, T. curviciliaris sp. nov.; G, T. recticiliaris sp. nov.; H, T. clinopeda Meyrick; I, T. oxygramma Meyrick; J, T. parvimaculata sp. nov.; K, T. apicidisca sp. nov.; L, T. villosa sp. nov.; M, T. flaviterminata sp. nov.; N, T. hamatisigna sp. nov.; O, T. acicularis sp. nov.; P, T. rosegrammica sp. nov.; Q, T. canimaculata sp. nov.; R, T. hoplomacha Meyrick; S, T. embolarcha Meyrick; T, T. hexanesa Meyrick; U, T. acrantha Meyrick; V, T. scotaea Meyrick; W, T. dissobola Meyrick; X, T. pyrphora Meyrick.

FIGURE 45. Male genitalia of Thiotricha spp. A, T. canimaculata sp. nov., holotype, slide no. LGE17001; B, T. hoplomacha Meyrick, slide no. LGE18612; C, T. embolarcha Meyrick, slide no. LGE18402; D, T. hexanesa Meyrick, slide no. LGE16240; E, T. acrantha Meyrick, slide no. LGE16294; F, T. scotaea Meyrick, slide no. LGE18218 (Scale bars = 0.2 mm).

FIGURE 67. Type specimens and label data of Thiotricha spp. deposited in NHMUK.A, B, T. embolarcha Meyrick, ♀, holotype; C, D, T. hexanesa Meyrick, ♂, holotype; E, F, T. acrantha Meyrick, ♂, holotype; G, H, T. scotaea Meyrick, ♀, holotype.

FIGURE 74. Abdominal segments and genitalia of type specimens deposited in NHMUK. A, T. embolarcha Meyrick, ♀, holotype, slide no. J.F.G.C. 8360; B, T. hexanesa Meyrick, ♂, holotype, slide no. J.F.G.C. 8362; C, T. acrantha Meyrick, ♂, holotype, slide no. J.F.G.C. 8337.