Thiotricha pediformis, 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 : 134-136

Thiotricha pediformis sp. nov.

( Figs 19D , 27E , 28C , 43A, I , 59F )

Type material. Holotype ♂, CHINA, Zhejiang Province, Mt. Tianmu, Zhonglieci , 400 m, 1.viii.2011, leg. Linlin Yang and Na Chen, genitalia slide no. LGE18732 . Paratypes. CHINA: Zhejiang Province: 1 ♂, same data as holotype except 31.vii.2011 ; 6 ♂♂, 2 ♀♀, Chanyuansi, 350 m, Mt. Tianmu , 15, 20.viii.1999, leg. Houhun Li et al. genitalia slide nos. ZJL05039m, ZJL05040f, ZJL05233f, ZJL05332m; 1 ♂, Qingliangfeng , 900 m, Lin’an County, 11.viii.2005, leg. Yunli Xiao ; 2 ♂♂, 2 ♀♀, Wuyanling (27.35°N, 119.92°E), 790 m, Taishun County, 2.viii.2007, leg. Qing Jing , genitalia slide nos. LGE 18720m, LGE18721f; 1 ♀, Mt. Tianmu , 350 m, Lin’an County, 8.viii.2007, leg. Qing Jin ; 1 ♂, Mt. Jiulong , 400 m, 4.viii.2011, leg. Linlin Yang and Na Chen ; 1 ♂, 4 ♀♀, Laoan (30.33°N, 119.40°E), 555 m, Mt. Tianmu , 16–19.viii.2014, leg. Aihui Yin, Qingyun Wang and Suran Li , genitalia slide no. LGE18741f; 2 ♂♂, 1 ♀, Jiufucun (30.09°N, 118.93°E), 520 m, Mt. Longtang , 29, 31.viii.2014, leg. Aihui Yin, Qingyun Wang and Suran Li , genitalia slide nos. LLJ 14069m, LGE 18740m; 4 ♂♂, 1 ♀, Laofoyan Village (28.37°N, 118.67°E), 424 m, Shuangxi Town, Xianxialing , Jiangshan City , 7, 8.viii.2016, leg. Qingyun Wang, Meiqing Yang and Ping Liu , genitalia slide nos. LGE 18715m, LGE 18716m, LGE18717f; 1 ♂, Laofoyan Village (28.37°N, 118.67°E), 400 m, Shuangxi Town, Xianxialing , Jiangshan City , 28.v.2017, leg. Shuonan Qian and Ga-Eun Lee , genitalia slide no. LGE17254; 1 ♂, Laofoyan Village (28.21°N, 118.41°E), 465 m, 10.viii.2018, leg. Shuai Yu, Mengran Xing and Chen Liu , genitalia slide no. LGE18727; 2 ♀♀, Gutianshan (29.14°N, 118.07°E), 416 m, Kaihua County, 14.viii.2018, leg. Shuai Yu, Mengran Xing and Chen Liu ; 1 ♂, 2 ♀♀, Longwantan (28.22°N, 120.52°E), 127 m, Yongjia County, 20, 21.viii.2018, leg. Shuai Yu, Mengran Xing and Chen Liu , genitalia slide no. LGE18728f; Anhui Province: 7 ♂♂, 4 ♀♀, Tangkou Town, Huangshan City , 4, 5.viii.2004, leg. Jiasheng Xu and Jialiang Zhang , genitalia slide nos. ZJL05173m, ZJL05424f, ZJL05470m; 8 ♂♂, 4 ♀♀, Tanqiao Town, Huangshan City , 6, 7.viii.2004, leg. Jiasheng Xu and Jialiang Zhang , genitalia slide nos. ZJL05017f, ZJL05018m, ZJL05159f, ZJL05174f, ZJL05244m; 3 ♀♀, Mozitan , Huoshan County, 12.viii.2004, leg. Jiasheng Xu and Jialiang Zhang , genitalia slide no. ZJL05245; Guangxi Zhuang Autonomous Region : 3 ♂♂, Yangmeiao (25.29°N, 109.31°E), 1180 m, Huanjiang County, Hechi , 24, 25.vii.2015, leg. Meiqing Yang and Ga-Eun Lee ; Guizhou Province: 1 ♀, Shuizu Town, 740 m, Limingguan , Libo County, 20.vii.2015, leg. Meiqing Yang and Ga-Eun Lee , genitalia slide no. LGE18462; Hainan Province: 1 ♀, Shuiman Town (18.88°N, 109.67°E), 650 m, Wuzhishan City , 16.v.2007, leg. Zhiwei Zhang and Weichun Li ; 1 ♀, Mt. Diaoluo (18.67°N, 109.94°E), 940 m, 2.vi.2007, leg. Zhiwei Zhang and Weichun Li ; 2 ♀♀, Jian ¬fengling (18.73°N, 108.91°E), 940 m, 4, 6.vi.2007, leg. Zhiwei Zhang and Weichun Li ; 1 ♂, 1 ♀, Tianchi, 810 m, Jianfengling , 30.iii.2008, leg. Bingbing Hu and Haiyan Bai ; 1 ♂, 1 ♀, Mt. Diaoluo (18.66°N, 109.93°E), 250 m, 22.iv.2008, leg. Bingbing Hu and Haiyan Bai ; 1 ♀, Bawangling , 1000 m, 9.iv.2008, leg. Bingbing Hu and Haiyan Bai ; 8 ♂♂, 1 ♀, Wuzhishan Nature Reserves (18.90°N, 109.67°E), 740 m, 13−15.iv.2009, leg. Qing Jin and Bingbing Hu , genitalia slide no. LGE 18800m; 1 ♂, Maoyang Town (18.94°N, 109.51°E), 225 m, Wuzhishan City , 19.iv.2009, leg. Qing Jin and Bingbing Hu ; 1 ♀, Forestry Bureau, 137 m, Bawangling , 22.iv.2009, leg. Qing Jin and Bingbing Hu ; 1 ♂, Jianfengling (18.73°N, 108.91°E), 800−900 m, 6.xii.2009, leg. Zhaohui Du et al., genitalia slide no. LGE18771; 1 ♂, Maoyang Town (18.94°N, 109.51°E), 210 m, Wuzhishan City , 12.xii.2009, leg. Zhaohui Du and Linlin Yang ; 1 ♂, Jiaxi Nature Reserves (18.83°N, 109.19°E), 220 m, 14.xii.2009, leg. Zhaohui Du and Linlin Yang ; 1 ♀, Tianchi (18.74°N, 108.84°E), 1050 m, Jianfengling , Ledong County, 30.iv.2013, leg. Yinghui Sun, Wei Guan and Tengteng Liu ; 1 ♂, Bawangling (19.09°N, 109.11°E), 245 m, Changjiang County, 9.v.2013, leg. Yinghui Sun, Wei Guan and Tengteng Liu ; 1 ♀, Hongxin Village (19.08°N, 109.52°E) 430 m, Yuanmen , Baisha County, 17.iv.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu ; 1 ♂, Shuiman Town (18.88°N, 109.67°E), 620 m, Wuzhishan City , 19.iv.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu ; 1 ♂, Wuzhishan Nature Reserves (18.91°N, 109.68°E), 710 m, 20.iv.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu , genitalia slide no. LGE18749; 1 ♂, Jianfengling Nature Reserves (18.74°N, 108.84°E), 1050 m, Ledong County, 27.iv.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu ; 4 ♂♂, Limushan Nature Reserves (19.17°N, 109.74°E), 640−700 m, 2−4.v.2014, leg. Tengteng Liu, Wei Guan and Xuemei Hu ; 2 ♂♂, 1 ♀, Wuzhishan Nature Reserves (18.88°N, 109.65°E), 742 m, 3, 4. vii.2014, leg. Peixin Cong, Linjie Liu and Sha Hu ; 1 ♀, Jianfengling Nature Reserves (18.74°N, 108.87°E), 770 m, Ledong County, 16.vii.2014, leg. Peixin Cong, Linjie Liu and Sha Hu ; 2 ♂♂, Limushan Forest Park (19.17°N, 109.73°E), 607 m, 25.vii.2014, leg. Peixin Cong, Linjie Liu and Sha Hu ; 1 ♂, Mt. Limu (19.13°N, 109.77°E), 240 m, 27.vii.2014, leg. Peixin Cong, Linjie Liu and Sha Hu , genitalia slide no. LGE18262; 1 ♂, 3 ♀♀, Limushan Forest Park (19.17°N, 109.74°E), 607 m, 13−17.v.2015, leg. Peixin Cong, Wei Guan and Sha Hu ; 2 ♀♀, Wuzhishan Nature Reserves (18.88°N, 109.65°E), 742 m, 20, 22.v.2015, leg. Peixin Cong, Wei Guan and Sha Hu ; 2 ♀♀, Diaoluoshan Nature Reserves (18.43°N, 109.52°E), 922 m, 25.v.2015, leg. Peixin Cong, Wei Guan and Sha Hu ; 2 ♂♂, 1 ♀, Jianfengling Nature Reserves (18.74°N, 108.87°E), 770 m, Ledong County, 28.v−1.vi.2015, leg. Peixin Cong, Wei Guan and Sha Hu ; 1 ♀, Hongkan (19.08°N, 109.50°E), 508 m, Yinggeling , 15.vi.2015, leg. Peixin Cong, Wei Guan and Sha Hu ; 1 ♂, Yaxing Village (19.02°N, 109.40°E), 321 m, Nankai Town , Baisha County, 21.vi.2015, leg. Peixin Cong, Wei Guan and Sha Hu ; 3 ♂♂, Shuiman Town (18.88°N, 109.67°E), 766 m, Wuzhishan City , 5, 7.vii.2015, leg. Qingyun Wang, Suran Li and Mengting Chen ; 4 ♂♂, Tianchi (18.73°N, 108.87°E), 787 m, Jianfengling , 11, 12.vii.2015, leg. Qingyun Wang, Suran Li and Mengting Chen , genitalia slide no. LGE18785; 15 ♂♂, 1 ♀, Tianchi (18.73°N, 108.87°E), 787 m, Jianfengling , 13–17.i.2016, leg. Kaijian Teng, Xia Bai and Mengting Chen , genitalia slide no. LGE 16061m; 1 ♀, Wuzhishan Nature Reserves (18.90°N, 109.67°E), 738 m, 3.iii.2016, leg. Qingyun Wang, Suran Li and Shengnan Zhao ; 2 ♀♀, Tianchi (18.73°N, 108.87°E), 787 m, Jianfengling , 8.iii.2016, leg. Qingyun Wang, Suran Li and Shengnan Zhao ; 1 ♀, Shuiman Town (18.88°N, 109.67°E), 766 m, Wuzhishan City , 31.vii.2016, leg. Xia Bai, Shuonan Qian and Wanding Qi ; 1 ♀, Tea Garden (18.88°N, 109.67°E), 690 m, Shuiman Town, Wuzhishan City , 5.xi.2016, leg. Xia Bai, Shuonan Qian and Wanding Qi ; 2 ♂♂, Yinggezui (19.05°N, 109.56°E), 599 m, Yinggeling , 30.vii−1.viii.2017, leg. Xia Bai, Ping Liu and Shuai Yu ; 1 ♀, Mt. Wuzhi , (18.91°N, 109.70°E), 732 m, 4.viii.2017, leg. Xia Bai, Ping Liu and Shuai Yu , genitalia slide no. LGE17244; Hunan Province: 1 ♀, Maqiao Village, Baituo Town , Xiangtan County, 30.vii.2004, leg. Yunli Xiao , genitalia slide no. LGE05234; Jiangxi Province: 2 ♂♂, 2 ♀♀, Mt. Sanqing, 400 m, Dexing City , 14, 15.viii.1985, leg. Guangpu Shen , genitalia slide no. LGE 18764m; Xizang Autonomous Region : 1 ♂, Motuo County (29.32°N, 95.32°E), 1097 m, Linzhi City , 10.viii.2017, leg. Mujie Qi and Xiaofei Yang , genitalia slide no. LGE17253; 1 ♀, Beibeng Town (29.25°N, 95.18°E), 810 m, Motuo County, 13.viii.2017, leg. Mujie Qi and Xiaofei Yang , genitalia slide no. LGE18786; 1 ♀, Dexing Village (29.32°N, 95.30°E), 833 m, Motuo County, 18.viii.2017, leg. Mujie Qi and Xiaofei Yang ; 1 ♂, Chengjiao (29.33°N, 95.33°E), 1016 m, Motuo County, 5.viii.2018, leg. Mujie Qi , genitalia slide no. LGE18770; Yunnan Province: 1 ♀, Taiyanghe National Forest Park (22.60°N, 101.11°E), 1626 m, Pu’er City , 8.vii.2013, leg. Shurong Liu, Yuqi Wang and Kaijian Teng , genitalia slide no. LGE18797; 1 ♂, Bubang (21.60°N, 101.59°E), 656 m, Xishuangbanna , 22.vii.2014, leg. Kaijian Teng, Wei Guan, Xiuchun Wang and Shurong Liu , genitalia slide no. LGE18775; 1 ♀, Menglun Botanical Garden (21.9°N, 101.27°E), 580 m, Jinghong City , 6.viii.2016, leg. Kaijian Teng, Ga-Eun Lee and Tao Wang ; 1 ♂, Taiyanghe Nature Reserves, 1450 m, Pu’er City , 14.viii.2016, leg. Kaijian Teng, Ga-Eun Lee and Tao Wang , genitalia slide no. LGE18779.

Diagnosis. Superficially, T. pediformis could be confused with T. lumnitzeriella described from Japan, and the new species can be separated from the latter by the male genitalia: the valva is almost uniformly elongate from base to near apex and the juxta is more strongly convex in T. pediformis whereas the valva is slightly narrowed medially and the juxta is broadly convex in T. lumnitzeriella . The forewing markings of T. pediformis are also somewhat similar to those of T. lata , T. emarginata and T. parvimaculata , but a short longitudinal streak present near the tornus of T. lata and T. emarginata are absent in T. pediformis , and the costal streak of T. pediformis is longer and reaches the apical spot compared to T. parvimaculata . The female genitalia of T. pediformis are characterized by the narrowly U-shaped anterior margin of sternum VIII and the base of ductus bursae with a linear sclerite.

Description. Adult ( Fig. 9D ). Wingspan 7.0−11.0 mm. Head glossy white. Labial palpus white, with segment I very short; segment III fuscous ventrally and apically, slightly longer than II. Antenna with scape glossy white;

flagellum dark fuscous except basal 1/3 or 1/4 of dorsal surface white, male cilia as long as diameter. Thorax and tegula glossy white. Forewing glossy white, sometimes strongly mixed with cream, anterior edge of costa usually black in basal half, markings dark fuscous: a somewhat wedge-shaped costal streak from between distal 1/4 and 1/3 of wing, attenuated distally, obliquely running toward apex and nearly reaching apical spot, followed by and often confluent with a shorter costal streak extended from distal 1/5 of wing; beyond this mixed dark fuscous and white scales before apex, often forming a triangular patch; apical spot round, sometimes shortly extending along termen; sometimes with a grey suffusion along dorsum from near base to basal 1/2 or 2/3 of wing, followed by an inwardly directed V-shaped marking, the upper fork of this nearly reaching apical spot and sometimes confluent with costal streaks, the lower fork much shorter and running along fold; fringe on apical area white with subterminal and terminal black bands, produced downwards and bifurcate; fringe on termen grey except basal half white, near apex with a row of coarse metallic fuscous ciliation; fringe on dorsum grey. Hindwing grey except subapex white and apex black; fringe whitish grey except apical area white with a terminal black band. Legs as in T. emarginata except fore coxa with or without weak suffusion of fuscous scales.

Abdominal segments ( Figs 27E , 28C ). In male, sternum VIII approximately 1/5 length of abdomen, lateral margins broadly concave, leading to deeply bifid posterior apex, inner margin of two tines forming a V-shape, its apex somewhat rounded; tergum VIII semielliptical, bearing long coremata bilaterally. In female, posterior margin of tergum VII shortly sclerotized, bearing a bundle of stiff scales directed toward abdominal base.

Male genitalia ( Figs 43A, I ). Uncus broad, mitre-shaped. Gnathos hook long and very slender. Tegumen 1.5 times as long as uncus, with a median line near anterior margin. Valva broadened after base, then almost uniformly elongate to near apex; apex expanded, somewhat pediform, with a round indentation on costa. Anellus lobe very short, constricted at base, oval after base, sparsely setose apically. Juxta broadly convex in basal 2/3. Vinculum simple. Saccus short and very slender, not exceeding tegumen pedunculus. Aedeagus narrowing from base to apex, constricted at middle and before apex, respectively, shortly bifid apically.

Female genitalia ( Fig. 59F ). Papillae anales weakly sclerotized.Apophyses anteriores approximately 2/3 length or slightly shorter than apophyses posteriores. Sternum VIII longer than tergum VIII, weakly sclerotized except anterior and posterior margins; anterior margin produced in U-shape. Ostium bursae opening near anterior margin of sternum VIII. Ductus bursae narrow in posterior 1/3 or 1/4, with a very slender linear sclerite arising from base and reaching colliculum; colliculum situated near base, ductus seminalis arising from posterior 1/3 or 1/4. Corpus bursae elliptical, 1.5–2 times as long as ductus bursae; signum rounded, consisting of minute denticles, placed at posterior 1/4 or 1/3.

Variations. Specimens from Xizang tends to be yellower.

Distribution. China (Anhui, Guangxi, Guizhou, Hainan Hunan, Jiangxi, Xizang, Yunnan, Zhejiang).

Etymology. The species name is derived from Latin, pedis (foot) and forma (shape), referring to the pediform apex of valva.

Figures

FIGURE 9. Adults of Thiotricha spp. A, T. spinesigna sp. nov., ♂, holotype; B, T. angusteproducta sp. nov., ♂, holotype; C, T. cornuata sp. nov., ♂, holotype; D, T. crassiflagella sp. nov., ♂, holotype; E, T. minorirugata sp. nov., ♀, paratype; F, T. tridentata sp. nov., ♀, paratype; G, T. digitiprojecta sp. nov., ♂, paratype; H, T. truncata sp. nov., ♂, holotype.

FIGURE 19. Adults of Thiotricha spp. A, T. lata sp. nov., ♂, holotype; B, ditto, ♂, paratype; C, T. emarginata sp. nov., ♂, holotype; D, T. pediformis sp. nov., ♂, holotype; E, T. curviciliaris sp. nov., ♂, holotype; F, ditto, enlarged view of costal ciliation; G, T. recticiliaris sp. nov., ♂, holotype; H, ditto, enlarged view of costal ciliation.

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 28. Male tergum VIII and coremata of lata-group species. A, T. lata sp. nov.; B, T. emarginata sp. nov.; C, T. pediformis sp. nov.; D, T. curviciliaris sp. nov.; E, T. recticiliaris sp. nov.; F, T. clinopeda Meyrick; G, T. oxygramma Meyrick; H, T. parvimaculata sp. nov.

FIGURE 43. Male genitalia and enlarged view of anellus lobes of Thiotricha spp. A, I, T. pediformis sp. nov., holotype, slide no. LGE18732; B, J, T. curviciliaris sp. nov., holotype, slide no. LGE18750; C, K, T. recticiliaris sp. nov., holotype, slide no. LGE18765; D, L, T. clinopeda Meyrick, slide no. LGE18783; E, M, T. oxygramma Meyrick, slide nos. LGE18788 and LGE18357, respectively; F, T. parvimaculata sp. nov., holotype, slide no. LGE18247; G, T. lata sp. nov., paratype, slide no. LGE18756; H, T. emarginata sp. nov., holotype, slide no. LGE18714 (Scale bars = 0.2 mm).

FIGURE 59. Female genitalia of Thiotricha spp. A, T. scatebrosa (Meyrick), slide no. LGE16130; B, T. asymmetricosta sp. nov., paratype, slide no. LGE18190; C, T. aurea sp. nov., paratype, slide no. LGE18192; D, T. lata sp. nov., paratype, slide no. LGE18754; E, T. emarginata sp. nov., paratype, slide no. LGE18729; F, T. pediformis sp. nov., paratype, slide no. LGE18797 (Scale bars = 0.4 mm).