Thecobathra lambda (Moriuti, 1963)

(Figs 3, 13, 25)

Pseudocalantica lambda Moriuti, 1963: 222. TL: China (Taiwan). TD: Issiki collection.

Thecobathra lambda (Moriuti): Moriuti, 1971: 237.

Thecobathra taiwanensis Sohn, 2018: 379. Syn. nov.

Material examined. CHINA, Anhui: 1♀, Ke Village, Mt. Jiuhua, 8.VIII.2004, leg. JS Xu & JL Zhang, slide No. FXM06038; Chongqing: 3♁ 1♀, Mt. Jinfo, 800–850 m, 15‒16.VIII.2011, leg. XC Du, slide Nos. LHY21482♁, LHY21641 ♀; 10♀, Aikou Town, Xiushan County, 570 m, 27.VII.2012, leg. YH Sun & AH Yin, slide Nos. LHY21487, LHY21488, LHY21489; Fujian: 1♁, Sangang, Mt. Wuyi, 740 m, 24. V.2004, leg. HL Yu, slide No. FXM06067; 1♀, Mt. Tianzhu (27.76°N, 117.66°E), Xiamen, 220 m, 1.VIII.2010, leg. BB Hu & J Zhang, slide No. LHY21310; 1♁, Fuzhou National Forest Park (26.17°N, 119.28°E), 146 m, 23.VII.2020, leg. MJ Qi & XY Jin, slide No. LHY21298; Gansu: 3♁, Bifenggou, Wen County, 860 m, 9‒12.VII.2005, leg. HL Yu, slide No. JQ08246; Guangdong: 2♀, Shimentai (24.46°N, 113.09°E), 743 m, 16.VIII.2022, leg. H Sun et al., slide Nos. LHY21621, LHY21622; Guangxi: 2♁, Huaping, 950 m, 7‒8.VIII.2006, leg. WC Li, slide Nos. FXM06111, FXM06114; 1♁, Jinhekou, Jinxiu, 650 m, 28.IV.2008, leg. H Zhen & L Zhang, slide No. JQ07382; 1♁, Pingxiang, 280 m, 28.III.2012, leg. XF Yang, slide No. LHY21372; Guizhou: 1♁, Dongtang, Maolan, 26. V.1998, leg. QR Liao, slide No. L 00024; 8♁ 1♀, Linjiang, Xishui, 500 m, 24‒25.IX.2000, leg. HL Yu, slide Nos. YHL00293♁, YHL00310 ♀; 3♁, Mt. Cheng, Daozhen County, 1300 m, 19.VIII.2004, leg. YL Xiao, slide Nos. FXM06035, JQ08249; 4♁, Guo Village, Daozhen County, 1300 m, 20.VIII.2004, leg. YL Xiao, slide No. FXM06027; 9♁, Fangxiang Town, 900 m, 13‒14.IX.2005, leg. JL Zhang, slide No. FXM06090; 6♁ 6♀, Banzhai Village (25.23°N, 108.03°E), 530 m, 11‒13.VIII.2018, leg. ML Zheng et al., slide Nos. LHY21505♁, LHY21506♁, LHY21507♁; 4♀, Mt. Foding (27.35°N, 108.16°E), Shiqian, 618 m, 18.VII.2019, leg. MR Xing et al., slide Nos. LHY21643, LHY21680; Hainan: 1♁, Mt. Diaoluo, 100 m, 16.IV.2008, leg. BB Hu & HY Bai, slide No. JQ08247; 2♁ 1♀, Mt. Wuzhi, 31. V.2010, leg. BB Hu & J Zhang, slide Nos. LHY21382♁, LHY21383 ♀, LHY21384♁; 6♀, Mt. Wuzhi (18.86°N, 109.67°E), 700 m, 18.IV‒12. V.2013, leg. YH Sun et al., slide Nos. LHY21389, LHY21395; 22♁ 13♀, Hongxin Village (19.08°N, 109.52°E), Yuanmen Town, Baisha County, 430 m, 14‒29.IV.2014, leg. TT Liu et al., slide Nos. LHY21400♁, LHY21401♁, LHY21402 ♀, LHY21404♁, LHY21406♁; 45♁ 6♀, Hongkan (19.08°N, 109.50°E), Yinggeling, 508 m, 26‒28. VI.2014, leg. PX Cong et al., slide Nos. LHY21411♁, LHY21412♁, LHY21676 ♀; 5♁ 1♀, Hongxin Village (19.07°N, 109.52°E), Yuanmen Town, Baisha County, 460 m, 29. VI ‒1.VII.2014, leg. PX Cong et al., slide Nos. LHY21413♁, LHY21446♁, LHY21677♁, LHY21678 ♀; 1♁ 2♀, Mt. Wuzhi Natural Reserve (18.54°N, 109.40°E), 742 m, 3‒ 6.VII.2014, leg. PX Cong et al., slide No. LHY21414♁; 4♀, Mt. Limu Forest Park (19.10°N, 109.44°E), 607 m, 13‒15. V.2015, leg. PX Cong et al., slide No. LHY21447; 1♀, Mt. Wuzhi Natural Reserve (18.53°N, 109.39°E), 742 m, 20. V.2015, leg. PX Cong et al., slide No. LHY21449; 5♁ 1♀, Hongkan (19.08°N, 109.50°E), Yinggeling, 508 m, 13‒17. VI.2015, leg. PX Cong et al., slide No. LHY21452♁; 1♀, Mt. Limu Natural Reserve (19.17°N, 109.73°E), 632 m, 3.VII.2015, leg. QY Wang et al., slide No. LHY21453; 2♁ 7♀, Shuiman Town (18.88°N, 109.67°E), Mt. Wuzhi, 766 m, 5‒7.VII.2015, leg. QY Wang et al., slide No. LHY21454♁; 11♁ 5♀, Hongkan (19.08°N, 109.50°E), Yinggeling, 540 m, 23‒28.VII.2015, leg. QY Wang et al., slide Nos. LHY21456 ♀, LHY21670♁; 2♁, Yaxing Village (19.02°N, 109.40°E), Nankai Town, Baisha County, 312 m, 29.VII.2015, leg. QY Wang et al., slide No. LHY21457; 10♁ 1♀, Hongxin Village (19.07°N, 109.52°E), Yuanmen Town, Baisha County, 445 m, 31.VII‒3.VIII.2015, leg. QY Wang et al., slide Nos. LHY21458 ♀, LHY21662♁, LHY21663♁, LHY21664♁, LHY21665♁; 5♀, Hongkan (19.08°N, 109.50°E), Yinggeling, 540 m, 21.I.2016, leg. X Bai et al., slide No. LHY21459; 1♁ 1♀, Shuiman Town (18.88°N, 109.67°E), Mt. Wuzhi, 766 m, 27‒28.II.2016, leg. QY Wang et al., slide No. LHY21460♁; 2♁, Hongkan (19.08°N, 109.50°E), Yinggeling, 540 m, 5‒7.III.2016, leg. QY Wang et al., slide Nos. LHY21464♁, LHY21465♁; Henan: 1♁ 1♀, Lingshan Temple, Luoshan County, 350 m, 22. V.2000, leg. HL Yu, slide No. YHL00233♁; 9♁ 6♀, Shuiliandong, Tongbai, 300 m, 11‒14.IX.2000, leg. HH Li & O Karsholt, slide Nos. YHL00288 ♀, YHL00291♁, YHL00292♁, YHL00305 ♀, YHL00306 ♀, YHL00307 ♀, FXM06066♁, FXM06107♁, FXM06116 ♀; Hong Kong: 2♁, Xincun, Lincun, 60 m, 15.IX.2009, leg. HH Li et al., slide No. JQ09012; 1♁, Kadoorie Farm and Botanic Garden, 210 m, 17.IX.2009, slide No. JQ09013; Hubei: 1♁, Hefeng, 1260 m, 15.VII.1999, leg. HH Li et al., slide No. YHL00096; 1♁, Taohuachong (30.99°N, 116.03°E), 635 m, 27. VI.2014, leg. W Guan & MQ Yang, slide No. LHY21315; 3♁, Mt. Wu (31.09°N, 115.80°E), Yingshan County, 880 m, 28‒30. VI.2014, leg. W Guan & MQ Yang, slide Nos. LHY21316, LHY21317; Hunan: 5♁ 4♀, Heping Village, Chengguan Town, Taojiang County, 26.VII.2004, leg. YL Xiao, slide Nos. FXM06030 ♀, FXM06070♁, FXM06071♁, JQ09027 ♀; 2♁, Maqiao Village, Baituo Town, Xiangtan, 30.VII.2004, leg. YL Xiao, slide No. FXM06095; 2♁ 3♀, Cangxi Town, Xinhua County, 8‒ 9.VIII.2004, leg. YL Xiao, slide Nos. FXM06043 ♀, FXM06044 ♀, JQ08253♁; 1♁, Mt. Mang (24.98°N, 112.86°E), 541 m, 24.VII.2020, leg. H Sun et al., slide No. LHY21328; Zhejiang: 1♁, Renchuan Town (28.85°N, 120.46°E), Jinhua, 909 m, 30.VII.2015, leg.AH Yin et al., slide No. LHY21160; 29♁ 60♀, Mt. Changgang National Forest Park (30.01°N, 122.1°E), Zhoushan, 64 m, 3‒6.VIII.2016, leg. QY Wang et al., slide Nos. LHY21135 ♀, LHY21146 ♀, LHY21232♁, LHY21234♁, LHY21235♁, LHY21253♁, LHY21284♁, LHY21285♁, LHY21288 ♀, LHY21292 ♀, LHY21293♁, LHY21294 ♀, LHY21295♁, LHY21672 ♀, LHY21673 ♀; 8♁ 17♀, Zhoushan (30.01°N, 122.08°E), 109 m, 20.VIII.2017, leg. SN Qian et al., slide Nos. LHY21256 ♀, LHY21290♁, LHY21291♁, LHY21296♁, LHY21297 ♀, LHY21674 ♀, LHY21675♁; 1♁ 3♀, Fuze Village (29.34°N, 119.13°E), Chun’an County, 144 m, 4.VIII.2018, leg. S Yu et al., slide Nos. LHY21112♁, LHY21113 ♀, LHY21182 ♀.

Diagnosis. Adult (Fig. 3). Wingspan 12.0‒17.0 mm. Thecobathra lambda is diagnosed in the male genitalia by the valva narrowly parallel-sided in the basal half and slightly dilated in the distal half, and with a dentate ridge running from near base to middle half (Fig. 13); in the female genitalia by the subdigitate lamella postvaginalis slightly widened and setose distally, and has a small hump (Fig. 25).

Distribution. Widely distributed in China (Anhui, Chongqing, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Hainan, Henan, Hong Kong, Hubei, Hunan, Jiangxi, Sichuan, Taiwan, Zhejiang), Thailand.

Remarks. Thecobathra taiwanensis Sohn, 2018 was described from a female. The morphological characters of the adult and the female genitalia of the species agree with those of T. lambda. Hence, we propose T. taiwanensis should be a synonym of T. lambda.