Review of the genus Argyresthia Hübner, [1825] (Lepidoptera: Yponomeutoidea: Argyresthiidae) from China, with descriptions of forty-three new species Author Liu, Tengteng Author Wang, Shuxia Author Li, Houhun text Zootaxa 2017 4292 1 1 135 journal article 32781 10.5281/zenodo.827746 248cfde9-84c8-4101-887c-08f27ad5afac 1175-5326 827746 48A417CD-CA76-4CA1-8E2C-93DE2E681CCC 22. Argyresthia ( Argyresthia ) acuminata , sp. nov. ( Figs. 32 , 101 , 157 , 213 , 264 ) Description. Adult ( Fig. 32 ) wingspan 12.0 mm. Head white, face tinged with pale yellow. Labial palpus pale yellow, mixed with gray laterally. Antenna with scape white, pecten yellow; flagellum grayish white, ringed with black. Foreleg with femur gray on inner surface, tibia and tarsus blackish fuscous on inner surface, remainder white; midleg mostly pale yellowish white, tibia dotted with blackish gray near base, at middle, and on distal part dorsally, tarsus blackish gray on distal part of each tarsomere; hindleg grayish white on inner surface, gray on outer surface, tarsus blackish gray distally on outer surface of each tarsomere. Thorax white; tegula silvery dark gray. Forewing ratio 4.5; ground color gray; costa interspersed with black and white dots in basal 4/5, black dot before middle largest, with white spot at distal 1/10 and before apex, the latter smaller or absent; black mixed with gray streak below basal 2/5 of fold; black spot at middle of cell; dorsal band white, extending to before tornus, with scattered gray scales distally; dorsal fascia black, from before middle of wing to distal 3/10 of costa, narrowed; black streak along vein R4, below it with suffused white scales extending to termen; black dots at tornus and at lower angle of cell; cilia white adjacent to white costal spots, black around apex, grayish white near tornus. Hindwing and cilia uniformly gray. Male genitalia ( Figs. 101 , 157 , 213 ): Tuba analis shorter than width of valva. Socius covered with 17̄19 scale-like setae narrowed to pointed apex, bearing two long setae posteriorly ( Fig. 213 ). Gnathos inflated distally, with six to eight long thick apical setae. Valva more or less heart-shaped, narrowly rounded apically; a row of long thick setae in disc near ventral margin with several similar setae in distal area. Saccus shorter than width of valva, with distal 3/4 nearly linear. Phallus straight, truncate or narrowly rounded apically, 5.6 times as long as width of valva ( Fig. 157 ). Second sternite with about 18 micro-setae in each row; eighth sternite Y or V-shaped. Coremata present. Female genitalia ( Fig. 264 ): Ovipositor 2.5 times as long as eighth segment. Anterior apophysis 3/4 length of posterior apophysis, bifurcate before middle, branches fused, forming weakly and thinly sclerotized ventral margin of ostium bursae. Lamella postvaginalis triangular. Antrum funnel-shaped, half length of eighth segment. Ductus bursae densely spinulate before and near opening of ductus seminalis; ductus seminalis originating from anterior 2/ 5 of ductus bursae. Corpus bursae small, round, concave slightly on anterior margin, with sparse micro-spines and denticles; signum with basal plate band-shaped, horns short, extending outward almost horizontally, anterior margin rounded. Type material. CHINA : Holotype , Ƌ, Dadian Forest Station ( 36.55°N , 111.21°E ), Mt. Wulu , Linfen City , Shanxi Province , 1620 m , 19.vii.2013 , leg. Tengteng Liu and Peixin Cong , slide no. LTT12740 . Paratypes : Shanxi Province : 6♀ , same data as holotype, except 19, 20.vii.2013 , slide nos. LTT12735 , LTT12749̄50; 4♀ , Mt. Mian ( 36.87°N , 111.99°E ), Jiexiu County , 1370 m , 25̄ 27.vii.2013 , leg. Tengteng Liu and Peixin Cong , slide nos . LTT12313, LTT12453̄4, LTT12752; 4♀ , Mt. Lingkong ( 36.61°N , 112.08°E ), Qinyuan County , 1560 m , 31.vii , 1– 2.viii.2013 , leg. Tengteng Liu and Peixin Cong , slide nos . LTT12737, LTT12857; 1♀ , Mt. Tianlong ( 37.73°N , 112.37°E ), Taiyuan City , 1280 m , 12.vii.2013 , leg. Tengteng Liu and Peixin Cong , slide no . LTT12741; 1♀ , Xixia ( 35.45°N , 112.03°E ), Xiachuan Village , Qinshui County , Jincheng City , 1500 m , 16.viii.2012 , leg. Qiang Gao and Na Chen , slide no . LTT12761; 1♂ , Xiyao Village ( 38.67°N , 112.01°E ), Ningwu County , 1475 m , 21.vii.2011 , leg. Shulian Hao and Jiayu Liu , slide nos . LTT12839, LTT12839W; Gansu Province : 1Ƌ, Mt. Xinglong ( 35.80°N , 104.07°E ), Yuzhong County , 8.vii.1992 , leg. Houhun Li , slide no . L93011 . Inner Mongolia Autonomous Region : 2♀ , Mt. Dongmotianling ( 40.43°N , 112.10°E ), Heilaoyao , Huhehaote City , 1480 m , 12.viii.2007 , leg. Houhun Li and A. Bidzilya , slide nos . LTT12468, LTT12848. Other material : Shanxi Province : 1♀ (without abdomen), Mt. Lingkong ( 36.61°N , 112.08°E ), Qinyuan County , 1560 m , 1.viii.2013 , leg. Tengteng Liu and Peixin Cong. Distribution. China ( Gansu , Inner Mongolia , Shanxi ). Diagnosis. This new species is closest to A . ( A. ) curvativa , sp. nov. , superficially. It can be separated from the latter by the forewing lacking white scales in the basal 1/10 to 2/5 near the costa and with the dorsal fascia reaching the costa; in the male genitalia by the straight phallus being 5.6 times as long as the width of the valva; and in the female genitalia by the signum rounded on the anterior margin. In A. ( A. ) curvativa , sp. nov. , the forewing is suffused with white scales from the basal 1/10 to 2/5 near the costa and the dorsal fascia does not reach the costa; the phallus is curved at distal 1/3 and is 3.5 times as long as the width of the valva; and the signum is straight on the anterior margin. Argyresthia ( A. ) acuminata is similar to A . ( A .) conjugella in the shape of the signum, but A. ( A. ) acuminata has a white frons, a triangular lamella postvaginalis, and a corpus bursae slightly concave on the anterior margin; in contrast, A . ( A .) conjugella has a yellowish-fuscous frons, a trapezoidal lamella postvaginalis, and a corpus bursae with the anterior margin deeply concave to about anterior 1/3. Etymology. The specific name is derived from the Latin acuminatus , meaning narrowed and pointed, referring to the scale-like setae on the socius narrowed and pointed apically.