Ryojius fodingshanensis Irfan, Zhang & Peng

Ryojius fodingshanensis Irfan, Zhang & Peng , sp. n.

(佛LJƜƋĀe)

Figures 202 View FIGURE 202 , 203 View FIGURE 203 , 310 View FIGURE 310

Types. Holotype ♂ ( HNU–GZ– IV–1706 ), CHINA, Guizhou Prov.; Tongren City, Shiqian Co., Pingshan Town , Fodingshan Vill ., Fodingshan NNR , 27.34899°N, 108.16272°E, 666 m, 01.XI.2017, G.C. Zhou leg. GoogleMaps Paratypes: 1♂ 1♀, with same data as for holotype male ( HNU–GZ– IV–1706 ). GoogleMaps

Etymology. The specific epithet is derived from type locality; adjective.

Diagnosis. Ryojius fodingshanensis sp. n. resembles R. fanjingshanensis sp. n. in having the similar radix, lamellacharacteristicainmalepalpandstretcherofepigyne ( Figs 202A–D View FIGURE 202 , 203A, B View FIGURE 203 ; Figs 199A–D View FIGURE 199 , 200A–C View FIGURE 200 ), but can be distinguished by at the proximal end of distal arm tip of paracymbium with knob in R. fodingshanensis sp. n. ( Figs 202A–D View FIGURE 202 ), vs. the distal arm tip with depression in R. fanjingshanensis sp. n. ( Figs 199A–D View FIGURE 199 ); apex of embolus finger-shaped in prolateral view in R. fodingshanensis sp. n. ( Figs 202A–D View FIGURE 202 ), vs. forked in R. fanjingshanensis sp. n. ( Figs 199A–D View FIGURE 199 ); dorsal tibial apophysis beak-shaped in dorsal view in R. fodingshanensis sp. n. ( Figs 202A–D View FIGURE 202 ), vs. leaf-shaped in R. fanjingshanensis sp. n. ( Figs 199A– D View FIGURE 199 ). The posterior margin of basal part of scape V- shaped in epigyne in R. fodingshanensis sp. n. ( Figs 203A, B View FIGURE 203 ), vs. wave-like in R. fanjingshanensis sp. n. ( Figs 200A–C View FIGURE 200 ).

Description. Male (holotype): Total length: 1.97. Carapace 0.91 long, 0.71 wide, yellow, cervical and radial grooves distinct. Clypeus 0.19 high. Chelicerae with five promarginal and six retromarginal teeth. Sternum longer than wide, yellow with microsetae. Eyes: AER recurved, PER straight, slightly wider. Eye sizes and interdistances: AME 0.03, ALE 0.05, PME 0.05, PLE 0.05, AME–AME 0.03, PME–PME 0.06, AME–ALE, 0.04, PME–PLE 0.07, AME–PME 0.04, ALE–ALE 0.26, PLE–PLE 0.31, ALE–PLE 0.01. Length of legs: I 2.87 (0.84, 1.01, 0.58, 0.44), II 2.57 (0.79, 0.91, 0.49, 0.38), III 2.02 (0.61, 0.67, 0.41, 0.33), IV 2.61 (0.77, 0.95, 0.53, 0.36). TmI 0.31 and TmIV absent. Tibial spine formula: 2-2-2-2. Opisthosoma 1.06 long, 0.70 wide, oval, dusky grey, posteriorly with two chevrons; ventral side dusky grey.

Palp ( Figs 202A–D View FIGURE 202 , 203C View FIGURE 203 ): Femur unmodified, almost longer than patella and tibia. Patella as long as tibia, ventrally grooved, with a long dorsal spine. Tibia conical, dorsal tibial apophysis (DTA) strongly sclerotized pointing retrolaterally in dorsal view; with one retrolateral and one dorsal trichobothria; cymbium unmodified, retrolateral margin with a shallow depression at the base; paracymbium (PC) strongly scleortized, distal arm tip with knob; distal suprategular apophysis (DSA) small covered by the tegulum with narrow hook-shaped dorsal tip. Radix (R) arch-shaped. Lamella characteristica (LC) with 2 branches extending upwardly. Terminal apophysis (TA) wide, with broad tip. Embolus (E) conspicuously large, posteriorly curved about semicircle, C-shaped, apex strongly sclerotized, finger-shaped with blunt end; thumb short covered by the terminal apophysis; embolus proper (EP) with pointed end.

Female (one of the paratypes): Total length: 1.98. Carapace 0.81 long, 0.63 wide, yellow brown, cervical and radial grooves distinct. Clypeus 0.17 high. Chelicerae with five promarginal and six retromarginal teeth. Sternum longer than wide, yellow with microsetae. Eyes: AER recurved, PER straight, slightly wider. Eye sizes and interdistances: AME 0.04, ALE 0.07, PME 0.07, PLE 0.07, AME–AME 0.02, PME–PME 0.05, AME–ALE, 0.03, PME–PLE 0.05, AME–PME 0.03, ALE–ALE 0.26, PLE–PLE 0.31, ALE–PLE 0.01. Length of legs: I 2.42 (0.71, 0.84, 0.48, 0.39), II 2.23 (0.65, 0.77, 0.45, 0.36), III 1.91 (0.61, 0.60, 0.36, 0.34), IV 2.37 (0.74, 0.81, 0.45, 0.37). TmI 0.34 and TmIV absent. Tibial spine formula: 2- 2-2-2. Opisthosoma 1.17 long, 0.79 wide, oval, dusky grey, posteriorly with two chevrons; ventral side dusky grey.

Epigyne ( Figs 203A, B View FIGURE 203 ): Protruding; characterised by conspicuosly wide, posteriorly projecting V-shaped basal part of scape (BS), dorsally bearing narrow tongue-shaped stretcher (ST). Distal part of scape (DPS) widened posteriorly with small lateral pockects. Posterior median plate (PMP) rectangular. Spermathecae (S) globular, situates at the apeces.

Distribution. Known only from the type locality (Guizhou Province, Fig. 310 View FIGURE 310 ).