Argyresthia (Argyresthia) grammosacca Liu, Wang & Li, 2017, sp. nov.
Creators: name: Liu, Tengteng
name: Wang, Shuxia
name: Li, Houhun
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Yponomeutidae
Argyresthia
Argyresthia grammosacca

description: 34. Argyresthia (Argyresthia) grammosacca, sp. nov. (Figs. 43, 79, 112, 168, 224, 272)
Description. Adult (Figs. 43, 79) wingspan 12.0 mm. Head white, face tinged with yellowish white. Labial palpus yellowish white, mixed with grayish fuscous laterally. Antenna with scape white, pecten yellowish fuscous; flagellum white, ringed with blackish fuscous. Foreleg black on inner surface, tibia dotted with black at basal 1/3 and 2/3 on outer surface, tarsus black on distal four tarsomeres, remainder creamy white; midleg mostly creamy white, femur and distal part of tibia tinged with blackish gray; hindleg mostly creamy white, distal half of tibia blackish gray on outer surface, first tarsomere blackish gray on outer surface, other tarsomeres mixed with blackish gray on outer surface. Thorax white; tegula golden fuscous. Forewing ratio 4.0; blackish gray, grayish fuscous towards base; costa with several transverse white striae on basal 3/5, black spot at basal 2/5 and 3/5, white spot at distal 1/5; black suffusion near distal end of cell; dorsal band white, extending to near tornus, suffused with gray scales distally; dorsal spot black, broadly rectangular, from before middle of wing extending straight to middle of cell, or sometimes obliquely outwards to before 2/5 of costa; cilia black basally, gray medially, blackish fuscous distally, white at costal white spots, gray near tornus. Hindwing and cilia gray.
Male genitalia (Figs. 112, 168, 224): Tuba analis equal to width of valva in length. Socius covered with 15–16 scale-like setae, posterior margin straight, bearing two long setae (Fig. 224). Gnathos inflated distally, with 6̄12 long thick setae apically. Valva widest in basal 1/3, dorsal margin nearly straight; sparsely covered with a clump of thick setae in disc near ventral margin, with a few similar setae on distal area. Saccus shorter than width of valva, with distal 3/5 narrowed, linear. Phallus nearly straight, 4.5 times as long as width of valva (Fig. 168). Second sternite with 10̄12 micro-setae in each row; eighth sternite V or Y-shaped. Coremata present.
Female genitalia (Fig. 272): Ovipositor 3.2 times as long as eighth segment. Anterior apophysis 2/3 length of posterior apophysis, bifurcate at middle, branches fused, forming ventral margin of ostium bursae. Lamella postvaginalis triangular. Antrum funnel-shaped or slightly tubular, half length of eighth segment. Ductus bursae spinulate before and near opening of ductus seminalis; ductus seminalis originating from middle of ductus bursae. Corpus bursae oval, with dense micro-denticles; signum with basal plate band-shaped, horns short, widest at base and narrowed apically, slightly curved before apex, overall somewhat trapezoidal, anterior margin slightly convex medially.
Type material. CHINA: Holotype, Ƌ, Mengda (35.84°N, 102.49°E), Xunhua County, Qinghai Province, 2240 m, 13.vii.1995, leg. Houhun Li and Shuxia Wang. Paratypes: 4Ƌ, 11♀, same data as holotype, except 13, 15.vii- 1995, slide nos. LTT12439Ƌ, LTT12440♀, LTT12731Ƌ, LTT12732♀. Gansu Province: 1Ƌ, 6♀, Mt. Xinglong (35.80°N, 104.07°E), Yuzhong County, 2120 m, 29̄ 31.vii, 4.viii.1993, leg. Houhun Li, slide nos. YHL00198Ƌ, LTT12441♀; 7♂, 18♀, Mt. Xinglong (35.80°N, 104.07°E), Yuzhong County, 2178 m, 19̄ 21.viii.2007, leg. Feng Yang and Hanguang Gao, slide nos. LTT12020♀, LTT12442♀; 1♂, Dangchuan Forest Farm (34.34°N, 106.16°E), Tianshui City, 1342 m, 28.vii.2006, leg. Xinpu Wang and Xiangfeng Shi. Ningxia Hui Autonomous Region: 2Ƌ, Suyukou (38.72°N, 106.01°E), Mt. Helan, 2000 m, 2.viii.2006, leg. Feng Yang and Qi He, slide no. LTT12323 ♂; 1Ƌ, 2♀, Suyukou (38.72°N, 106.01°E), Mt. Helan, 2000 m, 3.vi.2006, leg. Xinpu Wang, slide nos. LTT12037Ƌ, LTT12324♀; 1♀, Lvyuan Forest Farm (35.39°N, 106.35°E), Mt. Liupan, 1600 m, 6.vii.2008, leg. Shulian Hao and Zhiwei Zhang, slide no. LTT12475W; 1♀, Xiaonanchuan plant garden (35.34°N, 106.31°E), Erlonghe Forest Farm, Mt. Liupan, 1900 m, 27.vi.2008, by net, leg. Shulian Hao and Zhiwei Zhang; 1♀, Dongshanpo Forest Farm (35.39°N, 106.35°E), Mt. Liupan, 2050 m, 7.vii.2008, leg. Shulian Hao and Zhiwei Zhang, slide no. LTT12178; 1♀, Qiuqianjian Forest Station (35.56°N, 106.44°E), Qiuqianjia Forest Farm, Mt Liupan, 1700 m, 2.vii.2008, leg. Shulian Hao and Zhiwei Zhang. Shaanxi Province: 1♀, Chengcheng County (35.20°N, 109.94°E), 1000 m, 20.vii.1996, leg. Shuxia Wang, slide no. LTT12452. Inner Mongolia Autonomous Region: 1♀, Xuelingzi (38.69°N, 105.83°E), Nansi, Yaoba, Mt. Helan, Alashan, 2204 m, 31.vii.2010, leg. Hongxia Liu and Zhiwei Zhang, slide no. LTT12469; 2♀, Wubeigou (38.97°N, 105.91°E), Hala, Mt. Helan, Alashan, 2325 m, 26, 27.vii.2010, leg. Hongxia Liu and Zhiwei Zhang, slide no. LTT12451. Shanxi Province: 1Ƌ, Haojiagou (37.82°N, 111.50°E), Mt. Guandi, Jiaocheng County, 1660 m, 4.vii.2011, leg. Shulian Hao and Zhiwei Zhang, slide no. LTT12733; 1♂, Dahe Forest Farm (35.45°N, 111.94°E), Linfen City, 1340 m, 12.vii.2012, leg. Qiang Gao and Na Chen, slide no. LTT12450; 3♀, Mt. Mian (36.87°N, 111.99°E), Jiexiu County, 1370 m, 17, 20.vii.2014, leg. Tengteng Liu, Meiqing Yang and Sihan Lu, slide no. LTT12734; 1♀, Mt. Mian (36.87°N, 111.99°E), Jiexiu County, 1370 m, 29.vii.2013, leg. Tengteng Liu and Peixin Cong; 1♂, 2♀, Xizhashui Village (35.69°N, 113.44°E), Lingchuan County, Jincheng City, 900 m, 15, 16, 18.vii.2010, leg. Haiyan Bai and Linlin Yang. Henan Province: 1♀, Mt. Baotianman (33.52°N, 111.94°E), Neixiang County, 1200 m, 2.vi.2006, leg. Jinmei Lv and Xu Zhang, slide no. LTT12449; 1♀, Mt. Baiyun (33.68°N, 111.85°E), Luoyang City, 1560 m, 23.vii.2001, leg. Dandan Zhang, slide no. LTT12456. Sichuan Province: 1♀, Heye (33.23°N, 103.92°E), Jiuzhaigou, 2350 m, 18.viii.2002, leg. Shulian Hao, slide no. LTT12446; 1♂, Zezhawa (33.16°N, 103.92°E), Jiuzhaigou, 2400 m, 14.viii.2002, leg. Shulian Hao.
Other material: 1♀ (without abdomen), 1♀ (without hindwings and abdomen), Mt. Xinglong (35.80°N, 104.07°E), Yuzhong County, Gansu Province, 2178 m, 19̄ 20.viii.2007, leg. Feng Yang and Hanguan Gao; 1♀ (without abdomen), Suyukou (38.72°N, 106.01°E), Mt. Helan, Ningxia Hui Autonomous Region, 2000 m, 2.viii.2006, leg. Feng Yang and Qi He; 1♀ (without abdomen), Xizhashui Village (35.69°N, 113.44°E), Lingchuan County, Jincheng City, Shanxi Province, 900 m, 12.vii.2010, leg. Haiyan Bai and Linlin Yang.
Distribution. China (Gansu, Henan, Inner Mongolia, Ningxia, Qinghai, Shaanxi, Shanxi, Sichuan).
Diagnosis. This new species is superficially similar to A. (A.) spinosella Stainton, 1849. It can be separated by the socius straight on the posterior margin and the saccus with distal 3/5 apparently narrowed and linear in the male genitalia; and by the triangular lamella postvaginalis in the female genitalia. In A. (A.) spinosella, the socius is protruded posteriorly and the saccus is subtriangular in the male genitalia; and the lamella postvaginalis is nearly linear in the female genitalia. Argyresthia (A.) grammosacca is similar to A. (A.) campylotropa, sp. nov. in the male genitalia, and the differences between them are given under the latter species.
Etymology. The specific name is derived from the Greek prefix gramm -, meaning linear, and the term saccus, referring to the saccus with its distal part linear as compared to its congener A. (A.) spinosella.
description: Published as part of Liu, Tengteng, Wang, Shuxia & Li, Houhun, 2017, Review of the genus Argyresthia Hübner, [1825] (Lepidoptera: Yponomeutoidea: Argyresthiidae) from China, with descriptions of forty-three new species, pp. 1-135 in Zootaxa 4292 (1) on pages 46-47, DOI: 10.5281/zenodo.827746