Five new East-Asian species of the genus Ypsolopha Latreille (Lepidoptera: Ypsolophidae) Author Ponomarenko, Margarita G. Author Sohn, Jae-Cheon Author Zinchenko, Yuliya N. Author Wu, Chun-Sheng text Zootaxa 2011 2760 18 28 journal article 10.5281/zenodo.276802 4d6932f1-5799-486c-9d47-5af9b7514ca8 1175-5326 276802 Ypsolopha lutisplendida Sohn et Wu , sp. nov. ( Figs 5 , 19 ) Type material. Holotype : Ƥ, China , Shanxi Province, Mt. Taibaishan, 11 vii. 1980 , gen. slide IOZ-09015, IZCAS , with red rectangular label written " Holotype / Ypsolopha lutisplendida ". Paratype : 1Ƥ, China , Shanxi Province, Ningwu, vi. 1974 , abdomen missing, reared from Pinus tabulaeformis Carr. , IZCAS . Diagnosis. The new species has a unique forewing pattern with a reticulated yellowish brown area in the center, which easily distinguishes it from all known congeners. Also the long antrum in the female genitalia is unlike to that in any of the East Asian Ypsolopha . Interestingly, a similar antrum in the female genitalia is present in the Nearctic Y. schwarziella (Busck) which has a different external appearance of brownish white forewings with fuscous longitudinal streaks. Description. Adult ( Fig. 5 ). Head. Vertex rough, with white piliform scales, scales on anterior half tinged with dark brown subterminally; frons smooth, white. Antenna filiform, 1/2 as long as forewing; scape dark brown dorsally, white ventrally; each flagellomere dark brown on proximal half, white on distal half. Labial palpus slightly curved upwards, almost reaching to frontal suture, with white scales, ventral ones tinged with dark brown subterminally; third segment almost as long as second, with pointed apex; second segment with dense scale tuft ventrally. Thorax and abdomen. Tegula white, intermixed with dark brown except posterior margin; mesonotum white, intermixed with dark brown except anterior 1/4. Foreleg with coxa mostly white, sparsely speckled with dark brown ventrally; femur to tibia white ventrally, dark brown dorsally; tarsus dark brown intermixed with white. Midleg with coxa to tibia white, sparsely speckled with dark brown; tarsus dark brown, tinged with white on distal half of each tarsomere. Hindleg silvery white, tinged with pale grey dorsally; tibia with hair tuft ventrally. Forewing length 9.6–10.7 mm (n = 2), elongate, apex round, termen oblique, with spreading or reticulate pattern of golden orange interiorly; costal and dorsal marginal areas white, each scale with dark brown tip, irregularly interrupted by golden orange strigulae; a fuscous spot on apical area; fringe white, each scale with brown tip. Hindwing lustrous dark brown, paler to base; fringe silvery white. Abdomen pale grey dorsally, silvery white ventrally. Male genitalia . Unknown. FIGURES 18–19. Female genitalia of Ypsolopha spp.: 18–18a, Y. tesselatidorsata sp. nov. , paratype, Russia; 19, Y. lutisplendida sp. nov. , holotype, China. 18–19, general view; 18a, ventral sclerotization of segment VIII. Female genitalia ( Fig. 19 ). Papilla analis semiglobular, slightly protruding dorsoterminally, setose; ovipositor moderate and telescopic, membrane between segments IX and VIII 1.6 times as long as segment VIII; sternite VIII sclerotized laterally, thereby setose posteromarginally; apophysis posterioris slender, 3.5 times longer than apophysis anterioris; the latter Y-shaped basally, anterior branch traversing anterior margin of sternite VIII. Ostium bursae slightly narrower than 1/3 of segment VII width; antrum cup-shaped, 1/2 as long as membranous part of ductus bursae, as wide as a junction between ductus bursae and corpus bursae, longitudinal concave area on dorsum enlarged like goblet near lower end, intervened by penetration of sclerotized duct. Ductus bursae 1.5 times longer than corpus bursae, remarkably widened to corpus bursae, moderately granulate; bulla seminalis as long as antrum; ductus seminalis 1/2 as long as antrum. Corpus bursae ovate; signum elongate triangular, scobinate, with a transverse ridge near bottom of bursae. Distribution. China (Northwest). Host plant. Pinus tabulaeformis Carr. (Pinaceae) . Etymology. The specific name lutisplendida , is derived from the Latin luteus meaning yellow, and splendidus , meaning shining, in concordance with the yellowish glittering of the forewings.