Gongylidioides lingulatus, Irfan & Zhang & Peng, 2022

Irfan, Muhammad, Zhang, Zhi-Sheng & Peng, Xian-Jin, 2022, Survey of Linyphiidae (Arachnida: Araneae) spiders from Yunnan, China, Megataxa 8 (1), pp. 1-292 : 91-95

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 ) .

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.

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.

Male. Unknown.

Distribution. Known only from the type locality ( Fig. 113 ).

Genus Gongylidium Menge, 1868 (AEƂƦø)

Figures

FIGURE 111. Gongylidioides lingulatus sp. nov., female holotype. A, B Epigyne, ventral view C Vulva, dorsal view.

FIGURE 112. Gongylidioides lingulatus sp. nov., female holotype. A Habitus, dorsal view B Habitus, ventral view.

FIGURE 113. Distribution of Gongylidioides species.