Herpetogramma longispina Wan, Lu & Du

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 : 75

Herpetogramma longispina Wan, Lu & Du sp. nov. Figs 7 , 8 , 21-25

Type material.

Holotype. ♂, pinned, with genitalia in a separate slide. China, Sichuan: Yingjing, Longcanggou, 102°49'22"E, 29°31'5"N, 1610 m, 20.VI.2016, leg. Jian-Yue Qiu, genitalia slide no.: WJP17418. Paratype. China, Sichuan: 6 ♂♂, 2 ♀♀, Yingjing, Longcanggou, 1610 m, 18-20.VI.2016, leg. Jian-Yue Qiu; 16 ♂♂, 3 ♀♀, Anzihe Nature Reserve, 1312 m, 11-15.VII.2016, leg. Ji-Ping Wan; 1 ♂, 1 ♀, Ya’an, Baoxing, Fengtongzhai, 2180 m, 1.VIII.2016, leg. Ji-Ping Wan; Hubei: 1 ♂, 1 ♀, Enshi, Xingdoushan Nature Reserve, Sanxian, 1200 m, 1-2.VIII.2012, leg. Jun Zhang & Xiao-Bin Fu. Genitalia slide no.: WJP17365, WJP17370, WJP17374, WJP17381, WJP17417, WJP17420.

Diagnosis.

The species is similar to H. magna (Butler, 1879), but can be distinguished from the latter by its light brown wings, the broad uncus blunt at apex and elongate lingulate valva, corpus bursae sharply narrowed posteriorly, and the boundary indistinct between the ductus bursae and corpus bursae. In H. magna , wings are brown or dark brown; the narrowed uncus is pointed at apex and the valva is subfusiform, the corpus bursae is slightly narrowed posteriorly, and the boundary is distinct between the ductus bursae and corpus bursae.

Description.

Adult ( Figs 7 , 8 ). Forewing length 14.5-16.0 mm (wingspan 32.0-34.0 mm). Frons rounded, brown or light brown. Vertex with erect orange-yellow scales. Antenna light brown, male antenna with ventral cilia ca. half as long as diameter of flagellomere. Labial palpus obliquely upturned, basal 2/3 white and distal 1/3 light brown. Thorax and abdomen light brown dorsally, silvery white ventrally. Legs silvery white, fore tibia brown basally. Wings light brown tinged with faint yellow, lines and spots brown, distinct. Forewing with orbicular spot and reniform discoidal spot, faint yellow between orbicular spot and discoidal spot. Antemedial line excurved slightly, adjoined by a light-yellow wider line inside; postmedial line from ca. 2/3 of costa, straight to M1, excurved and pointedly serrated from M1 to CuA2, then sharply incurved, and nearly vertical to inner margin below posterior angle of cell, adjoined by a wide and serrated light-yellow line outside. Hindwing with pattern of postmedial line similar to forewing, discoidal spot reniform. Cilia of wings brown, white along anal angle of hindwing.

Male genitalia ( Figs 21 , 22 , 23 ). Uncus basiconic, broad and shorter, distal 1/3 bearing dorsal setae, apex blunt. Valva elongate lingulate, densely ciliated and bearing a lamellate basal projection ( Fig. 22 ). Juxta cupped, with posterior margin concave and protruding posterolaterally. Saccus subtriangular, short and broad, distinctly pointed distally. Phallus cylindrical; a cluster of long spinose cornuti gathered to subfusiform, ca. 1/4 length of phallus ( Fig. 23 ).

Female genitalia ( Figs 24 , 25 ). Apophysis anterioris slightly longer than apophysis posterioris. Ductus bursae short, ca. 1/3 length of corpus bursae; colliculum near base of ductus bursae. Boundary indistinct between ductus bursae and corpus bursae. Corpus bursae nearly pear-shaped, sharply narrowed posteriorly, with shallow depression at basal 1/3. Signum nearly square, slightly depressed along diagonal axis ( Fig. 25 ).

Etymology.

The specific name, longispina , is derived from the Latin longus (meaning ‘long’) and spina (meaning ‘thorn’), in reference to a cluster of long spinose cornuti in male genitalia.

Distribution.

China (Sichuan, Hubei).

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 21 - 35. Genitalia of Herpetogramma species. 21 - 25 H. longispina sp. nov.: 21 - 23 male, holotype, genitalia slide no. WJP 17418 24, 25 female, paratype, genitalia slide no. WJP 17370 26 - 30 H. brachyacantha sp. nov.: 26 - 28 male, holotype, genitalia slide no. WJP 17421 29, 30 female, paratype, genitalia slide no. WJP 17379 31 - 35 H. magna: 31 - 33 male, genitalia slide no. WJP 17423 34, 35 female, genitalia slide no. WJP 17416 22, 27, 32 lamellate protuberance on base of valva 23, 28, 33 cornuti in male genitalia 25, 30, 35 signum of female genitalia.