Ypsolopha flaviterminata, 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 : 17-18

Ypsolopha flaviterminata sp. nov.

( Figs 9 , 60 , 109 , 160 )

Type material. Holotype: ♂, China, Mt. Xinglong, Yuzhong County (35°53′ N, 104°06′ E), Gansu Province, 2130 m, 2.viii.1993, coll. Houhun Li et al., genitalia slide No. JQ07041. Paratypes: 1 ♂, 1 ♀, 2178 m, 20.viii.2007, coll. Feng Yang & Hanguang Gao, same locality as for holotype.

Diagnosis. This new species is similar to Y. leuconotella (Snellen) in appearance, but can be distinguished by the pale yellow thorax and the the pale yellow dorsal band of the forewing, which are grayish white in the latter species. Ypsolopha flaviterminata sp. nov. is similar to Y. flavida sp. nov. in genitalia, but can be separated by the phallus curved at middle and the long coecum about 1/5 length of the phallus in the male genitalia ( Fig. 109 ), and the V-shaped lamella postvaginalis in the female genitalia ( Fig. 160 ). In Y. flavida sp. nov., the phallus is straight and the male coecum is about 1/7 length of the phallus ( Fig. 110 ), and the female lamella postvaginalis is Y-shaped ( Fig. 161 ).

Description. Adult ( Fig. 9 ): Wing expanse 21.0 mm. Vertex yellowish brown, mixed with white scales near base of antenna; face dark gray, mixed with dark brown around eyes. Antenna pale brown, ringed with white on each flagellomere. Labial palpus grayish brown, white on ventral surface of basal segment; tuft of second segment extremely small; third segment longer than second. Thorax pale yellow. Tegula pale yellowish brown. Forewing with R4 and R5 separated ( Fig. 60 ); basal 2/3 dark brown with grayish brown scales between costa and fold, ocherous yellow between fold and dorsum, formal a broad dorsal band, distal 1/3 yellowish brown tinged with dark brown; subsemicircular ocherous yellow patch at end of cell; yellowish brown spot near base of dorsum; cilia grayish brown. Hindwing pale gray, darkened to apex; cilia pale yellowish brown, with yellowish white basal line.

Fore- and midlegs grayish brown, grayish white mixed with brown on ventral side of femora and midleg; hindleg yellowish white, white on inner side, pale gray on ventral side of tarsus; ringed with white on end of each tarsomere.

Male genitalia ( Fig. 109 ): Uncus small, subulate. Socius slender, ending in point. Ventral plate of gnathos tongue-shaped. Valva broad ovate, concave near base on ventral margin, rounded apically. Saccus about 2/3 length of socius, narrowed at base, broadened slightly to subapex. Phallus about 1.4 times length of valva, curved medially; coecum about 1/5 length of phallus; cornuti composed of two large thorns, about 3/5 length of phallus.

Female genitalia ( Fig. 160 ): Intersegmental membrane between papilla analis and 8th abdominal segment 1/2 length of abdomen. Apophyses posteriores about twice length of apophyses anteriores. Lamella postvaginalis Vshaped. Antrum short, cup-shaped. Ductus bursae more than twice length of corpus bursae. Corpus bursae rounded, granulous around signum; signum a small sclerotized ovate plate, ridged at middle.

Distribution. China (Gansu).

Etymology. The specific epithet is derived from the Latin prefix flav -, meaning yellow, and the Latin terminatus, meaning terminal, referring to the forewing yellowish brown on distal 1/3.

Figures

FIGURES 4 – 11. Adults of Ypsolopha spp. 4. Y. vittella (Linnaeus), ♂; 5. Y. japonica Moriuti, ♂; 6. Y. amoenella (Christoph), ♂; 7. Y. hebeiensis Yang, ♀; 8. Y. leuconotella (Snellen), ♀; 9. Y. flaviterminata sp. nov., holotype, ♂; 10. Y. flavida sp. nov., holotype, ♂; 11. Y. asperella (Linnaeus), ♂.

FIGURES 55 – 60. Wing venation of Ypsolopha spp. 55. Y. vittella (Linnaeus), slide no. JQ 08232 ♂ W; 56. Y. japonica Moriuti, slide no. JQ 07267 ♀ W; 57. Y. amoenella (Christoph), slide no. JQ 07155 ♂ W; 58. Y. hebeiensis Yang, slide no. JQ 08217 ♀ W; 59. Y. leuconotella (Snellen), slide no. JQ 07259 ♂ W; 60. Y. flaviterminata sp. nov., paratype, slide no. JQ 07235 ♂ W.

FIGURES 105 – 110. Male genitalia of Ypsolopha spp. 105. Y. vittella (Linnaeus), slide no. JQ 09008; 106. Y. japonica Moriuti, slide no. JQ 07066; 107. Y. amoenella (Christoph), slide no. JQ 07155; 108. Y. leuconotella (Snellen), slide no. JQ 07259; 109. Y. flaviterminata sp. nov., paratype, slide no. JQ 07235; 110. Y. flavida sp. nov., paratype, slide no. JQ 07021.

FIGURES 158 – 163. Female genitalia of Ypsolopha spp. 158. Y. hebeiensis Yang, slide no. JQ 08217; 159. Y. leuconotella (Snellen), slide no. JQ 07260; 160. Y. flaviterminata sp. nov., paratype, slide no. JQ 07236; 161. Y. flavida sp. nov., paratype, slide no. JQ 07277; 162. Y. parallela (Caradja), slide no. JQ 07258; 163. Y. sarmaticella (Rebel), slide no. JQ 07227.