Thecobathra acrivalvata Fan, Jin et Li, 2008

Liu, Haoyu & Wang, Shuxia, 2023, Taxonomic study of the genus Thecobathra Meyrick (Lepidoptera: Yponomeutidae) in China, with descriptions of eight new species, Zootaxa 5325 (4), pp. 483-508 : 486

Thecobathra acrivalvata Fan, Jin et Li, 2008

( Fig. 22 )

Thecobathra acrivalvata Fan, Jin et Li, 2008: 19 . TL: China (Guizhou). TD: NKU.

Material examined. CHINA, Guizhou: Holotype ♁, Mt. Fanjing (27.92°N, 108.68°E), 530 m, 2.VI.2002, leg. XP Wang, slide No. FXM06054.

Additional material. Hunan: 1♁, Liyuan (26.30°N, 111.44°E), Mt. Jintong , Chengbu County, 604 m, 16.VIII.2018, leg. S Yu et al., slide No. LHY21319 ; Xizang: 1♁, Yigong Town (32.97°N, 104.10°E), Bomi County, 2230 m, 4.VIII.2017, leg. MJ Qi & XF Yang, slide No. LHY21081; 3♁ 1♀, 80K (29.66°N, 95.49°E), Motuo County , 2076 m, 26.VII‒6.VIII.2018, leg. MJ Qi, slide Nos. LHY21040♁, LHY21063♁, LHY21064♁; 2♁, Tongmai Town (30.10°N, 95.08°E), Bomi County , 2029 m, 13‒15.VIII.2018, leg. MJ Qi, slide Nos. LHY21094, LHY21095 ; Zhejiang: 5♁ 2♀, Jiufu Village (30.09°N, 118.93°E), Mt. Longtang , 520 m, 27‒30.VII.2014, leg. AH Yin et al., slide Nos. LHY21210♁, LHY21211♁, LHY21212♁, LHY21213♁, LHY21215 ♀, LHY21216♁, LHY21217 ♀; 2♁, Mt. Gutian (29.24°N, 118.11°E), Quzhou , 412 m, 24.VIII.2017, leg. SN Qian et al., slide No. LHY21258; 5♁ 1♀, Mt. Gutian (29.14°N, 118.07°E), Kaihua County, 416 m, 13‒15.VIII.2018, leg. S Yu et al., slide Nos. LHY21178♁, LHY21183 ♀, LHY21184♁, LHY21185♁.

Diagnosis. Thecobathra acrivalvata is similar to T. albana Liu, 1980 . It can be distinguished by the outer margin of the socius obtusely produced between middle and distal 1/4, and the valva concave on the ventral margin beyond end of the sacculus ( Fan et al. 2008: 21, fig. 12). In T. albana , the socius is subparallel-sided in basal 3/4 and narrowed from distal 1/4 to apex, and the valva is not concave on the ventral margin ( Fig. 11 ).

Description. Adult. Wingspan 13.0‒ 15.5 mm.

Female genitalia ( Fig. 22 ). Apophyses posteriores 1.5 times length of apophyses anteriores. Ventral arms of apophyses anteriores connected with lamella postvaginalis. Lamella postvaginalis broadly and shallowly concave medially on posterior margin, forming two mound-shaped lobes lined with long setae. Antrum 1/4 length of ductus bursae, slightly narrower than ductus bursae. Ductus bursae twice length of corpus bursae, sclerotized in posterior 1/3. Corpus bursae round; signum with lateral flange from broad base narrowed to obutse apex.

Distribution. China (Guizhou, Hunan, Xizang, Zhejiang).

Note. The female is described for the first time.

Figures

FIGURES 22–26. Female genitalia of Thecobathra spp. 22, T. acrivalvata, slide No. LHY21217; 23, T. albana, slide No. LHY21265; 24, T. cuneata sp. nov., paratype, slide No. LHY21668; 25, T. lambda, slide No. LHY21678; 26, T. latibasis, slide No. LHY21360. Scales = 0.5 mm.

FIGURES 11–14. Male genitalia of Thecobathra spp. 11, T. albana, slide No. LHY21419; 12, T. cuneata sp. nov., holotype, slide No. LHY21706; 13, T. lambda, slide No. LHY21452; 14, T. magnidentalis sp. nov., holotype, slide No. YHL00384. Scales = 0.5 mm.