Survey of Linyphiidae (Arachnida: Araneae) spiders from Yunnan, China Author Irfan, Muhammad 0000-0003-0445-9612 College of Life Sciences, Hunan Normal University, Changsha, 410081, China Author Zhang, Zhi-Sheng 0000-0002-9304-1789 Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing 400715, China. Author Peng, Xian-Jin 0000-0002-2614-3910 College of Life Sciences, Hunan Normal University, Changsha, 410081, China text Megataxa 2022 2022-12-27 8 1 1 292 http://dx.doi.org/10.1094/PDIS-04-22-0755-PDN journal article 10.11646/megataxa.8.1.1 2703-3090 7526571 Gongylidioides lingulatus sp. nov. (ŮḦAEƉƦ) Figures 111–113 Types. Holotype ♀ , CHINA , Yunnan , Forest along shelf above Yamu river , 0.4 km SE Shibali , 27.16337°N , 98.78208°E , alt. 2475m , 8 May 2004 , Charles Griswold and D. H. Kavanaugh and Heng-mei Yan leg. ( CGY37 ) . Paratypes : 1♀ , same data as holotype ( CGY37 ) ; 1♀ , Fugong County , Lumadeng Township , Shibali forest station trap area, 27.16636°N , 98.77667°E , alt. 2563m , 4 May 2004 , Charles Griswold and D. H. Kavanaugh leg. ( CGY28 ) . FIGURE 103. Gnathonarium gibberum Oi, 1960 , male (A–C) and female (D–F). A, D Habitus, dorsal view B, E Habitus, lateral view C, F Habitus, ventral view. FIGURE 104. Gnathonarium taczanowskii (O. Pickard-Cambridge, 1873 ) . A Habitus, dorsal view B Epigyne, ventral view C Vulva, dorsal view. Etymology. This epithet derives from the Latin adjective “ lingulate ”, meaning “tongue-shaped”, referring to the tongue-shaped dorsal plate in epigyne. Diagnosis. This new species resembles Gongylidioides rimatus ( Ma & Zhu, 1990 ) in having the reduced ventral plate, only small extension in lateral view, dorsal plate almost exposed in epigyne ( Fig. 111A–C ; Tu & Li, 2006 , fig. 6H), but can be distinguished by the dorsal plate tongue-shaped, longer than wide in G. lingulatus sp. nov. ( Fig. 111A–C ), whereas bell-shaped, broad posteriorly in G. rimatus ( Tu & Li, 2006 , fig. 6H). Spermathecae present almost in longitudinal position in G. lingulatus sp. nov. ( Fig. 111A–C ), whereas present horizontally in G. rimatus ( Tu & Li, 2006 , fig. 6H). Description. Female ( holotype , Fig. 112A, B ): Total length: 2.57. Carapace 1.23 long, 0.88 wide; cephalic region slightly elevated, brown; fovea, cervical and radial grooves distinct. Clypeus 0.21 high. Sternum longer than wide, brown, sparsely covered with microsetae. Labium wider than long. Maxillae long, distal end broad with scopulae. Chelicerae with four promarginal and six retromarginal teeth. Eyes: AER recurved, PER straight, slightly wider than AER. Eye sizes and interdistances: AME 0.06, ALE 0.08, PME 0.09, PLE 0.08, AME–AME 0.03, PME–PME 0.06, AME–ALE, 0.02, PME–PLE 0.05, AME–PME 0.05, ALE–ALE 0.31, PLE–PLE 0.35, ALE–PLE contiguous. Length of legs: I 3.37 (0.91, 1.13, 0.77, 0.56), II 3.19 (0.89, 1.06, 0.75, 0.49), III 2.74 (0.80, 0.87, 0.72, 0.35), IV 3.63 (1.07, 1.19, 0.90, 0.47). Leg formula IV-I-II-III. Tm I 0.39 and Tm IV 0.31. Tibial spine formula: 2-2-1-1. Abdomen 1.66 long, 1.02 wide, oval, gray, dorsally with black band, ventrolaterally with longitudinal band, ventral side gray with greenish-grey band. FIGURE 105. Distribution of Gnathonarium species. FIGURE 106. Gongylidiellum acerosus sp. nov. , male palp of holotype. A prolateral view B retrolateral view C dorsal view D ventral view. FIGURE 107. Gongylidiellum acerosus sp. nov. , male holotype. A Habitus, dorsal view B Habitus, lateral view C Habitus, ventral view. Epigyne ( Fig. 111A–C ): Ventral plate reduced, only small extension; copulatory openings present at the junction of dorsal and ventral plate posteriorly. Vulva: dorsal plate tongue-shaped almost exposed in ventral view; copulatory ducts short, forming pair of loops anteriorly; spermathecae globular, present laterally on dorsal plate, present longitudinally, pointing towards the anterior margin of ventral plate; fertilization ducts short, extending mesally. FIGURE 108. Distribution of Gongylidiellum acerosus sp. nov. . Male. Unknown. Distribution. Known only from the type locality ( Fig. 113 ). Genus Gongylidium Menge, 1868 (AEƂƦø)