Nosphistica metalychna ( Meyrick, 1935 )

Yu, Shuai & Wang, Shuxia, 2019, Taxonomic study of the genus Nosphistica Meyrick, 1911 (Lepidoptera Lecithoceridae) from China, with descriptions of seven new species, Zootaxa 4664 (4), pp. 497-517 : 502-503

Nosphistica metalychna ( Meyrick, 1935)

( Figs 7 , 19 , 31 )

Philoptila metalychna Meyrick, 1935: 73 . TL: China (Jiangsu Province). TD: ZMHB.

Nosphistica metalychna (Meyrick) : Park, 2002: 258.

Material examined. CHINA, Zhejiang Province: 1♂ , Zhonglieci, Mt. Tianmu , 400 m, 25.VII.2011, leg. Linlin Yang & Na Chen, slide No. LSR13144 ; 1♂, Zhangkangkou, Mt. Jiulong , 623 m, 5.VII.2013, leg. Aihui Yin & Xiu- chun Wang, slide No. LSR13236 ♂; 1♂, Huangtanyu, Mt. Jiulong , 467 m, 8.VII.2013, leg. Aihui Yin & Xiuchun Wang, slide No. LSR13233 ; 1♂, Laoan Village, Mt. Tianmu , 555 m, 6.VII.2014, leg. Aihui Yin, Xuemei Hu & Qin- gyun Wang ; 3♂, Laoan Village, Mt. Tianmu , 555 m, 6–15.VII.2015, leg. Aihui Yin, Kang Lou & Tao Wang, slide Nos. YS 17084, YS17106 ; 1♂, Huangtan Forest Farm, Pan’an County, Jinhua , 909 m, 30.VII.2015, leg. Aihui Yin, Kang Lou & Tao Wang, slide No. YS 17089 ; 1♀, Huaxi Village, Pan’an County, Jinhua , 542 m, leg. Aihui Yin, Kang Lou & Tao Wang, slide No. YS 17149 ; 1♂, Xiguan, Mt. Tianmu , 566 m, 18.VII.2014, leg. Aihui Yin, Qingyun Wang & Xuemei Hu, slide No. YS 17111 ; 3♂, 3♀, Qianjiangyuan, Mt. Tianmu , 866 m, 13–14.VIII.2014, leg. Aihui Yin, Qingyun Wang & Suran Li, slide Nos. YS 17120 ♂, YS17121 ♂; 2♀, Pinggang, Mt. Longxu , 754 m, 21–22.VII.2014, leg. Aihui Yin, Xuemei Hu & Qingyun Wang ; 2♂, 3♀, Qianqingtang, Qingliangfeng , 1059 m, 29.VII.2014, leg. Ai- hui Yin, Xuemei Hu & Qingyun Wang, slide Nos. YS17088 ♀, YS17091 ♂, YS17119 ♂; 1♂, 2♀, Ganzhuling, Yuyao , 853 m, 24.VII.2015, leg. Aihui Yin, Kang Lou & Tao Wang, slide No. YS 17087 ♂; 1♂, Mt. Gutian, Quzhou , 412 m, 6.VII.2017, leg. Zhenguo Zhang, Yanyan Jia & Juan Li, slide No. YS 17133 .

Diagnosis. Adult ( Fig. 7 ) wingspan 14.0–16.0 mm. This species is characterized in the male genitalia by the sub-rectangular valva with a widened flatly truncate apex and the sinuate lateral processes of the juxta directed inward almost by a right angle ( Fig. 19 ), and in the female genitalia by the elliptical corpus bursae with two signa. It is superficially similar to N. acriella Park, 2002 and the differences between them are stated in the preceding species.

Female genitalia ( Fig. 31 ). Abdominal sternite VIII membranous medially, sclerotized anteromedially, sparsely setose, concave medially on posterior margin. Apophyses anteriores approximately 3/5 length of apophyses posteriores. Ductus bursae narrowed posteriorly, broadened toward corpus bursae, approximately as long as corpus bursae; ductus seminalis arising from middle of ductus bursae, relatively narrow. Corpus bursae large elliptical; with two signa: one nearly rounded, at middle of corpus bursae, with dense denticles; another elliptical, smaller, at about anterior 1/4 of corpus bursae, with a heavily sclerotized horizontal ridge at middle.

Distribution. China (Jiangsu, Zhejiang).

Remarks. Nosphistica metalychna was described originally based on a single male collected from Nanjing, China. The female of the species is described for the first time in this study.

Park (2002) described N. fuscolepis from Taiwan, China, and distinguished it from N. metalychna ( Meyrick, 1935) by the strongly concave termen, the comma-shaped discocellular stigma on the forewing and the uniformly slender, medially bent aedeagus in the male genitalia ( Fig. 20 ). Based on the specimens collected from Zhejiang, China, N. fuscolepis can hardly be separated from N. metalychna in both superficial and male genital characters except the aedeagus that looks slenderer. Nosphistica fuscolepis was described on two males, and the female remains unknown. Further, N. fuscolepis is overlapped in the geographical distribution with N. metalychna in China. Thus, we excluded N. fuscolepis in this paper, waiting for confirmation by a molecular study or when female specimens are available.

Figures

FIGURES 6-11. Adults of Nosphistica spp. 6. N. acriella, ♂; 7. N. metalychna, ♂; 8. N. bisinuata, ♂; 9. N. abunda sp. nov., paratype, ♂; 10. N. apiculata sp. nov., paratype, ♂; 11. N. elliptica sp. nov., holotype, ♂. Scales=2 mm

FIGURES 18-23. Male genitalia of Nosphistica spp.18. N.acriella, slide No.YS17128; 19. N.metalychna, slide No.LSR13233; 20. N. fuscolepis, slide No. LSR13182; 21. N. bisinuata, slide No. YS17092; 22. N. abunda sp. nov., holotype, slide No. YS17096; 23. N. apiculata sp. nov., holotype, slide No. YS17144. Scales=0.5 mm

FIGURES 31-34. Female genitalia of Nosphistica spp. 31. N. metalychna, slide No. YS17150; 32. N. bisinuata, slide No. YS17155; 33. N. fenestrata, slide No. LSR13171; 33a. variation of N. fenestrata, slide No. YS17160; 34. N. fusoidea sp. nov., paratype, slide No. YS17166. Scales=0.5 mm