Ypsolopha flavida , Jin, Qing, Wang, Shuxia & Li, Houhun, 2013

Jin, Qing, Wang, Shuxia & Li, Houhun, 2013, Review of the genus Ypsolopha Latreille, 1796 from China (Lepidoptera: Ypsolophidae), Zootaxa 3705 (1), pp. 1-91: 18-19

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Ypsolopha flavida

sp. nov.

Ypsolopha flavida  sp. nov.

( Figs 10View FIGURES 4 – 11, 61View FIGURES 61 – 65 a, 110View FIGURES 105 – 110, 161View FIGURES 158 – 163)

Type material. Holotype: ♂, China, Baotianman, Neixiang county (33 °02′ N, 111 ° 50 ′ E), Henan Province, 1350 m, 15.vii. 1998, coll. Houhun Li, genitalia slide No. JQ07005. Paratypes: 1 ♂, 3 ♀♀, same data as for holoytype; 1 ♂, Mt. Xinglong, Yuzhong County (35 ° 53 ′ N, 104 °06′ E), Gansu Province, 2120 m, 29.vii. 1993, coll. Houhun Li; 1 ♀, Mt. Xinglong, Yuzhong County (35 ° 53 ′ N, 104 °06′ E), Gansu Province, 2178 m, 21.viii. 2007, coll. Feng Yang & Hanguang Gao.

Diagnosis. This species resembles Y. auratus Moriuti, 1977  in appearance and in genitalia, but can be separated by the forewing with densely scattered ocherous yellow scales on the distal half ( Fig. 10View FIGURES 4 – 11), the apically rounded valva in the male genitalia ( Fig. 110View FIGURES 105 – 110), and the elliptic signum in the female genitalia ( Fig. 161View FIGURES 158 – 163). In Y. auratus Moriuti  , the forewing is uniformly shining golden yellow ( Moriuti 1977: Fig. 14View FIGURES 12 – 18), the male valva is slightly concave at middle on the apex ( Moriuti 1977: Fig. 230), and the female signum is rectangular ( Moriuti 1977: Fig. 385). Ypsolopha flavida  sp. nov. is also similar to Y. flaviterminata  sp. nov., and the differences between them can be found in the diagnosis of the latter species.

Description. Adult ( Fig. 10View FIGURES 4 – 11): Wing expanse 19.0 mm. Vertex grayish white to pale yellowish brown; face pale grayish brown, mixed with dark brown around eyes. Antenna white, mixed with pale grayish brown on scape, ringed with brown on each flagellomere. Labial palpus grayish brown; basal segment white, with brown strip dorsally; tuft of second segment extremely small; third segment about twice length of second. Thorax and tegula pale yellow. Forewing with R 4 and R 5 approximate or stalked ( Figs 61View FIGURES 61 – 65 a a-b); uniformly pale orange yellow, sparsely scattered with brown scales, densely mixed with ocherous yellow on distal half; costa pale grayish brown along basal 1 / 3; fold ocherous yellow along basal 2 / 3, with a brown dot at 2 / 3; cilia concolorous with wing. Hindwing grayish brown, darkened to termen; cilia grayish yellow, with yellow basal line. Fore- and midlegs dark brown, white on femora and tibia of foreleg ventrally, ringed with white on each tarsomere. Abdomen grayish brown dorsally, grayish white ventrally.

Male genitalia ( Fig. 110View FIGURES 105 – 110): Uncus small, subulate. Socius tapering to pointed apex. Ventral plate of gnathos elongate ovate. Valva elongate oval, rounded apically. Saccus nearly as long as socius, parallel sided, truncate apically. Phallus about 1.6 times length of valva, straight; coecum about 1 / 7 length of phallus; cornuti composed of two large spines, about 3 / 5 length of phallus.

Female genitalia ( Fig. 161View FIGURES 158 – 163): Intersegmental membrane between papilla analis and 8 th abdominal segment 3 / 5 length of abdomen. Apophyses posteriores about 2.5 times length of apophyses anteriores. Lamella postvaginalis Y-shaped. Antrum extremely short, nearly cup-shaped. Ductus bursae more than twice length of corpus bursae. Corpus bursae rounded; signum small, elliptic, ridged at middle.

Distribution. China (Gansu, Henan).

Etymology. The specific epithet is derived from the Latin flavidus, meaning pale yellow, referring to the pale yellow ground colour of the forewing.

Remarks. This species varies slightly in the venation of the forewing, viz., R 4 and R 5 approximate or stalked basally.