Herpetogramma rudis (Warren, 1892)

Lu, Xiao-Qiang, Wan, Ji-Ping & Du, Xi-Cui, 2019, Three new species of Herpetogramma Lederer (Lepidoptera, Crambidae) from China, ZooKeys 865, pp. 67-85 : 72-75

Herpetogramma rudis (Warren, 1892) Figs 5 , 6 , 17-20

Acharana rudis Warren, 1892: 435.

Psara rudis : Shibuya 1929: 205.

Pachyzancla rudis : Inoue 1955: 182.

Herpetogramma rudis : Lee and Park 1958: 8.

Herpetogramma rude [sic]: Yamanaka and Yoshiyasu 1992: 88.

Material examined.

China, Chongqing: 1 ♂, Simian Mountain Nature Reserve, 1000 m, 20.VII.2012, leg. Xi-Cui Du & Li-Fang; 1 ♂, Simian Mountain Nature Reserve, Wangxiangtai, 900 m, 18.VII.2012, leg. Gui-Qing He; 1 ♂, 1 ♀, Jinyun Mountain Nature Reserve, Shamuyuan, 10-11.IX.2009, leg. Xi-Cui Du; Yunnan: 2 ♂♂, Malipo, 1098 m, 4.VI.2015, leg. Man-Fei Tao; 1 ♀, Malipo, Chuantou Town, 193 m, 9.VI.2015, leg. Man-Fei Tao; Guangxi: 1 ♂, Jingxi, Tengmao, 672 m, 13.VII.2015, leg. Xu Dan; Hubei: 2 ♀♀, Enshi, Xingdou Mountain Nature Reserve, Sanxian, 1200 m, 30.VII.2012, leg. Jun Zhang & Xiao-Bin Fu; Zhejiang: 1 ♂, 1 ♀, Tianmu Mountain, Zhonglieci, 400 m, 27.VII.2011, leg. Xi-Cui Du & Xiao-Bin Fu. Genitalia slide no.: WJP16066, WJP16067, WJP16077, WJP16085, WJP16103, WJP16140, WJP16141, WJP16142, WJP16143, WJP16180, WJP 16181, WJP16182, WJP16183, WJP17259, WJP17358, WJP17360, WJP17361.

Diagnosis. Adult ( Figs 5 , 6 ): Forewing length 9.0-12.0 mm (wingspan 21.0-27.0 mm). Wings light brown tinged with white, lines and spot brown. Forewing with postmedial line excurved and serrated from M1 to CuA2, adjoined by a light-yellow-white line outside. Male genitalia ( Figs 17 , 18 ): Uncus with distal 1/3 narrowed and bearing dorsal hairs, apex pointed and naked. Valva elongate lingulate, with a small basal lamellate projection bearing hairs distally ( Fig. 18A ). Sacculus with a slender finger-like projection bearing long hairs at basal 2/3 of posterior margin ( Fig. 18B ). Phallus without cornuti. Female genitalia ( Figs 19 , 20 ): Corpus bursae elongate, elliptical, with a central depression ca. 1/3 depth of diameter of corpus bursae. Signum near depression of corpus bursae, with a distinct lamellate protuberance medially along diagonal axis ( Fig. 20 ).

Distribution. China (Chongqing, Sichuan, Guizhou, Yunnan, Shaanxi, Henan, Hubei, Anhui, Zhejiang, Fujian, Guangxi, Hainan, Tibet), Korea, Japan, India ( Bae et al. 2008; Du 2008, 2009).

Remarks. The identification of H. rudis was based on the description and photographs of external morphology and genitalia ( Warren 1892; Inoue 1982; Bae et al. 2008; Sasaki and Yamanaka 2013). Although species of this genus have similar appearance and conservative genitalia, they can be differentiated according to their subtle and definite characteristics. In addition, it was found that the genitalia of H. biconvexa and H. rudis were different in size, but the ratios between structures were nearly the same, such as the length ratio between the uncus and the valva at ca. 1:4, ca. 4:3 between the uncus and the saccus, ca. 4:5 between the phallus and the transverse distance of the valva, and nearly 1:7 between the ductus bursae and the corpus bursae. We have not observed these characteristics in other similar species studied.

Figures

Figures 3 - 12. Habitus of Herpetogramma species 3, 4 H. biconvexa sp. nov. 3 male, holotype 4 female, paratype 5, 6 H. rudis 5 male 6 female 7, 8 H. longispina sp. nov. 7 male, holotype 8 female, paratype 9, 10 H. brachyacantha sp. nov. 9 male, holotype 10 female, paratype 11, 12 H. magna 11 male 12 female.

Figures 13 - 20. Genitalia of Herpetogramma species 13 - 16 H. biconvexa sp. nov. 13, 14 male, holotype, genitalia slide no. WJP 17419 15, 16 female, paratype, slide no. WJP 17383 17 - 20 H. rudis 17, 18 male, genitalia slide no. WJP 16318 19, 20 female, genitalia slide no. WJP 16316 14, 18 A: lamellate projection on base of valva; B: projection on posterior margin of sacculus 16, 20 signum of female genitalia.