Ourapteryx linzhiensis Jiang & Cheng, 2024

Cheng, Rui, Jiang, Nan, Zhu, Chaodong, Xu, Yongqiang & Han, Hongxiang, 2024, Eleven new species of the genus Ourapteryx Leach, 1814 (Lepidoptera: Geometridae) from China, Zoological Systematics 49 (2), pp. 158-174 : 163

publication ID	https://doi.org/ 10.11865/zs.2024205
publication LSID	lsid:zoobank.org:pub:D1C8C003-F232-4983-8A44-B113778CBC5E
persistent identifier	https://treatment.plazi.org/id/03DC87A8-FFAA-FFF6-DB9A-B4FF2A74F972
treatment provided by	Felipe
scientific name	Ourapteryx linzhiensis Jiang & Cheng
status	sp. nov.

Treatment

Ourapteryx linzhiensis Jiang & Cheng , sp. nov. ( Figs 8 View Figures 1–15 , 27 View Figures 20–27 , 45 View Figures 45–52 )

Description. Head. Antennae filiform in both sexes, dark grey diffused with white at basal five to ten segment dorsally. Frons dark greyish brown. Labial palpus dark greyish brown. Vertex white, suffused with sparse pale yellow scales.

Thorax. Patagia and tegulae white, suffused with pale yellow on lateral sides. Dorsal and ventral sides of thorax white suffused with sparse pale yellow hair-like scales. Legs white with sparse black spots, fore- and median femora suffused with pale yellow, black patches present between femora and tibia of fore- and median legs, hind tibia not dilated in male, without hair-pencil, both sexes with two pairs of spurs. Forewing length: male 23–26 mm; female 25–29 mm. Forewing with apex acute, outer margin almost straight. Hind wing with a moderately long tail, acute at tip, shoulder not prominent. Wings white. Forewing diffused with pale grey striation, short black streaks present on costal area between base and postmedial line; antemedial and postmedial lines straight, oblique and yellowish brown, former nearer to latter on anal margin than on costa; discal spot linear and yellowish brown; terminal line black, invisible near apex and anal angle; fringes mostly yellowish brown, white near apex and anal angle. Hind wing with discal spot indistinct; medial line straight, greyish brown, not extending to costa and anal margin; pale grey striation present near submarginal area; terminal line black, invisible near shoulder, tip of tail and anal angle; fringes mostly reddish brown, pale yellowish brown near shoulder, tip of tail and anal angle; tail with two spots at base, connected by a dark grey band, spots similar in size, dark red, surrounded with black scales. Underside white, transverse lines faintly indicated. Forewing with R 1 and R 2 coincident.

Abdomen. Abdomen white without setal comb on third sternite.

Male genitalia. Uncus stout and with pointed apex, basal width about three fifths of length. Socii small and membranous. Gnathos with median process short and tongue-like, spinose. Valva simple, rounded apically; costa straight. Furca developed on right side, rod-like, slightly curved, acute apically, terminating with a dense row of thorns, reaching base of uncus. Saccus rounded and short. Aedeagus cylindrical; vesica with a sclerotized plate densely covered with numerous short cornuti, all of similar size.

Female genitalia. Lamella postvaginalis and lamella antevaginalis almost semicircle, former folded on right side and with an oblique ridge from left side towards ostium. Colliculum short. Ductus bursae sclerotized with longitudinal ribs, longer than corpus bursae, strongly broadened towards corpus bursae, slightly curved. Corpus bursae globular, bearing a signum centrally; signum large and rounded with many marginal spines, disc small and rounded.

Diagnosis. The external characters and male genitalia of the new species are similar to O. chrisbahri Stüning, 2000 ( Figs 9 View Figures 1–15 , 28 View Figures 28–35 ), but can be distinguished by the following characters: the frons is dark greyish brown, while it is dark brown in O. chrisbahri ; the cornuti are represented by a cluster of short spines of similar length, while it is represented by a cluster of very small spines and a dense mass of much longer ones in O. chrisbahri . The female genitalia are very similar to those of O. longiacutata Jiang & Cheng , sp. nov., but the ductus bursae is more strongly sclerotized and the disc of the signum is smaller.

Etymology. The specific name is named after the type locality.

Material examined. Holotype ♂, China, Xizang ( IZCAS): Mêdog , 80K, 2095 m, 1–3.VIII.2014, coll. Rui CHENG & Le CUI, IZCAS slide no. Geom-02980. Paratypes. China: Yunnan ( IZCAS): 27♂ 6♀, Tengchong, Dahaoping, 2020 m, 24– 26.V.1992, 5–7.VIII.2007, coll. Dayong XUE & Chunguang WU ; 1♂, Gongshan, Alameng , 2314 m, 21.VII.2015, coll. Yang LI ; 1♂, Yulong, Tianchi , 2570 m, 9–12.VIII.2016, coll. Xiaoshuang BAN & Lanbin XIANG . Xizang ( IZCAS): 32♂ 18♀, Bomi, Tangmai, 1960–2100 m, 29–31.VIII.2005, 29–30.VIII.2006, 13–14.VIII.2014, coll. Xuejian WANG et al.; 1♂, Nyingchi, Shang Zayü , 1960 m, 21–23.VIII.2005, coll. Xuejian WANG ; 26♂ 14♀, Mêdog, 80K, 2095 m, 1–3.VIII.2014, coll. Rui CHENG & Le CUI ; 1♀, Mêdog, Gedang , 2000 m, 3.X.1982, coll. Yinheng HAN ; 1♂, Mêdog, Hanmi , 2095 m, 10– 11.VIII.2006, coll. Songyun LANG ; 1♂, Zayü, Zhuwagen, Xiongjiu , 1938 m, 29.VIII.2014, coll. Hong LIU .