Herbiphantes acutalis, Irfan & Peng, 2019

Irfan, Muhammad & Peng, Xianjin, 2019, Herbiphantes Tanasevitch, 1992 and Labullinyphia van Helsdingen, 1985 (Araneae Linyphiidae), two newly recorded spider genera from the Gaoligong Mountains in China with the description of two new species, Zootaxa 4638 (4), pp. 547-561 : 548-549

publication ID	https://doi.org/ 10.11646/zootaxa.4638.4.5
publication LSID	lsid:zoobank.org:pub:8E5F599F-F845-4AB4-87A7-C306FC014EB9
persistent identifier	https://treatment.plazi.org/id/1B0987A4-C246-8A1A-FF7E-FD05FD01FD49
treatment provided by	Plazi
scientific name	Herbiphantes acutalis
status	sp. nov.

Treatment

Herbiphantes acutalis View in CoL new species

( Figures 1–7 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 , 14 View FIGURE 14 )

Etymology. The species name comes from the Latin adjective “ acutalis ” meaning “pointed” referring to the pointed end of pit hook (distal suprategular apophysis) in male palp.

Types. Holotype ³, China, Yunnan Province: Fugong County, Lishadi Township, Shibali , 27.10520ºN, 98.77980ºE, alt. 2530m, 4–10 August 2005 GoogleMaps , G. Tang (Tang–05–08). Paratypes: 3³ 1♀, same data as holotype (Tang–05–08) GoogleMaps ; 1♀, Gongshan County, Cikai Township, Yibi Shan Ka , 27.75404ºN, 98.45924ºE, alt. 3529m, 12 Au- gust 2006, P. Hu (Hu 060812) GoogleMaps ; 2³, Gongshan County, Bingzhongluo Township, Fucai , 28.00882ºN, 98.51887ºE, alt. 2804m, 16 August 2006 GoogleMaps , P. Hu (Hu 060816); 4♀, Gongshan County, Qiqi No. 12 bridge, 27.71656ºN, 98.50305ºE, alt. 2738m, 28 September 2007 GoogleMaps , X.J. Peng (20070928).

Diagnosis. The new species resembles to the type species Herbiphantes cericeus ( Saito, 1934) in having the similar long tibia of male palp and the broad epigynal scape ( Figs 3 View FIGURE 3 A–D, 4A–D, 5A, B, 6A–C, 7A, B; Tanasevitch, 1992, fig. 1e, 2i), but can be distinguished by: the pit hook hook–shaped with pointed end in new species ( Figs 3A, B View FIGURE 3 , 4A, B View FIGURE 4 , 5A, B View FIGURE 5 ), whereas slightly curved in H. cericeus ( Tanasevitch, 1992, fig. 1e). The distal arm of paracymbium longer than wide in new species ( Figs 3B View FIGURE 3 , 4B View FIGURE 4 , 5B View FIGURE 5 ), whereas wider than long in H. cericeus ( Tanasevitch, 1992, fig. 1e). Epigynum can be distinguished by the posterior median plate triangular in new species ( Figs. 6 View FIGURE 6 A–C, 7A, B), whereas not triangular in H. cericeus ( Tanasevitch, 1992, fig. 2i).

Description: Male (holotype): Total length: 4.46; carapace 1.97 long, 1.38 wide, yellow, cephalic region strongly elevated, mid dorsally with a longitudinal black band; fovea, cervical and radial grooves distinct ( Fig. 1A, B View FIGURE 1 ). clypeus 0.48 high. Sternum longer than wide, yellowish brown; labium brown, wider than long; maxillae long, distal end broader ( Fig. 1C View FIGURE 1 ) with scopulae. Chelicerae yellowish brown, very long ( Fig. 2 View FIGURE 2 ), four promarginal and three retromarginal teeth. Eye region narrow, AER recurved, PER procurved, slightly wider than AER. Eye sizes and interdistances: AME 0.09, ALE 0.11, PME 0.11, PLE 0.11, AME–AME 0.05, AME–ALE, 0.10, AME–PME, 0.14, PME–PME 0.08, PME–PLE 0.10, ALE–ALE 0.56, PLE–PLE 0.59, ALE–PLE 0.02. Legs with alternate light and dark annuli; length of legs: I 11.9 (3.11, 3.68, 3.37, 1.74), II 11 (2.98, 3.28, 3.11, 1.63), III 8.15 (3.05, 2.11, 2.02, 0.97), IV 8.79 (2.45, 2.63, 2.59, 1.12); leg formula I–II–IV–III. Tm I 0.19 and Tm IV 0.12. Tibial dorsal spine formula: 2–2–2–2. Abdomen 2.44 long, 1.22 wide, oval, grey, dorsally with three pairs of white patches and a longitudinal white band followed by black patches posteriorly on each side, ventral side light grey with irregular white patches ( Fig. 1 View FIGURE 1 A–C). Palp: patella 1/3 length of tibia, curved mesally, dorsally with a long thick spine ( Figs 3 View FIGURE 3 A–D, 4A–D, 5A, B); tibia about 1.5 times longer than cymbium, with three retrolateral and two dorsal trichobothria ( Figs. 3 View FIGURE 3 A–D, 4A–D, 3A, B). Cymbium truncated, prolateral notch shallow ( Figs 3 View FIGURE 3 A–D, 4A–D, 5A, B). Paracymbium small, basal part with setae and a finger–like projection, distal arm longer than wide ( Figs. 3B View FIGURE 3 , 4B View FIGURE 4 , 5B View FIGURE 5 ). Pit hook sclerotized, hook–shaped with pointed end ( Figs 3 View FIGURE 3 A–C, 4A, B, 5A, B). Median membrane broad, curved distally ( Figs 3 View FIGURE 3 A–C, 4A, B, 5A, B). Radix bar–shaped, more than 4 times longer than wide ( Figs. 3A View FIGURE 3 , 4A View FIGURE 4 , 5A View FIGURE 5 ). Lamella characteristica long with serrated apical end ( Figs 3 View FIGURE 3 A–C, 4A, B, 5A, B). Embolus small, with blunt end ( Figs 3 View FIGURE 3 A–C, 4A, B, 5A, B).

Female (paratype): Total length: 3.54. carapace 1.49 long, 1.09 wide, yellow, cephalic region slightly elevated, mid dorsally with a longitudinal black band; fovea, cervical and radial grooves distinct ( Fig. 1D, E View FIGURE 1 ); clypeus 0.34 high. Sternum longer than wide, yellowish brown; labium brown, wider than long; maxillae long, distal end broader ( Fig. 1F View FIGURE 1 ) with scopulae. Chelicerae yellowish brown, two promarginal and three retromarginal teeth. Pedipal with a terminal claw. Eye region narrow, AER recurved, PER straight, slightly wider than AER. Eye sizes and interdistances: AME 0.08, ALE 0.11, PME 0.09, PLE 0.09, AME–AME 0.03, AME–ALE, 0.08, AME–PME, 0.09, PME–PME 0.06, PME–PLE 0.07, ALE–ALE 0.47, PLE–PLE 0.51, ALE–PLE 0.01. Legs alternate light and dark annuli; length of legs: I 8.73 (2.21, 2.63, 2.42, 1.47), II 8.26 (2.14, 2.51, 2.23, 1.38), III 5.63 (1.56, 1.73, 1.46, 0.88), IV 6.78 (1.98, 2.06, 1.75, 0.99); leg formula I–II–IV–III. Tm I 0.18 and Tm IV 0.14. Tibial dorsal spine formula: 2–2–2–2. Abdomen 2.16 long, 1.15 wide, oval, grey, dorsally with four white patches and a longitudinal white band followed by black patches posteriorly on each side, ventral side light grey with irregular white patches ( Fig. 1 View FIGURE 1 D–F). Tracheal system desmitracheate. Epigynum pale and transparent, ducts distinct. Scapus broad, wider than long, stretcher absent. Posterior median plate triangular. Spermathecae finger–like, curved anteriorly ( Figs 6 View FIGURE 6 A–C, 7A, B).

Distribution. Known only from type locality.