Herbiphantes acutalis

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 , 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

http://treatment.plazi.org/id/1B0987A4-C246-8A1A-FF7E-FD05FD01FD49

treatment provided by

Plazi

scientific name

Herbiphantes acutalis
status

new species

Herbiphantes acutalis  new species

( Figures 1–7View FIGURE 1View FIGURE 2View FIGURE 3View FIGURE 4View FIGURE 5View FIGURE 6View FIGURE 7, 14View 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 2005GoogleMaps  , 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 2006GoogleMaps  , P. Hu (Hu 060816); 4♀, Gongshan County, Qiqi No. 12 bridge, 27.71656ºN, 98.50305ºE, alt. 2738m, 28 September 2007GoogleMaps  , 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 3View 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, BView FIGURE 3, 4A, BView FIGURE 4, 5A, BView FIGURE 5), whereas slightly curved in H. cericeus  ( Tanasevitch, 1992, fig. 1e). The distal arm of paracymbium longer than wide in new species ( Figs 3BView FIGURE 3, 4BView FIGURE 4, 5BView 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. 6View 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, BView FIGURE 1). clypeus 0.48 high. Sternum longer than wide, yellowish brown; labium brown, wider than long; maxillae long, distal end broader ( Fig. 1CView FIGURE 1) with scopulae. Chelicerae yellowish brown, very long ( Fig. 2View 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. 1View FIGURE 1 A–C). Palp: patella 1/3 length of tibia, curved mesally, dorsally with a long thick spine ( Figs 3View FIGURE 3 A–D, 4A–D, 5A, B); tibia about 1.5 times longer than cymbium, with three retrolateral and two dorsal trichobothria ( Figs. 3View FIGURE 3 A–D, 4A–D, 3A, B). Cymbium truncated, prolateral notch shallow ( Figs 3View 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. 3BView FIGURE 3, 4BView FIGURE 4, 5BView FIGURE 5). Pit hook sclerotized, hook–shaped with pointed end ( Figs 3View FIGURE 3 A–C, 4A, B, 5A, B). Median membrane broad, curved distally ( Figs 3View FIGURE 3 A–C, 4A, B, 5A, B). Radix bar–shaped, more than 4 times longer than wide ( Figs. 3AView FIGURE 3, 4AView FIGURE 4, 5AView FIGURE 5). Lamella characteristica long with serrated apical end ( Figs 3View FIGURE 3 A–C, 4A, B, 5A, B). Embolus small, with blunt end ( Figs 3View 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, EView FIGURE 1); clypeus 0.34 high. Sternum longer than wide, yellowish brown; labium brown, wider than long; maxillae long, distal end broader ( Fig. 1FView 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. 1View 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 6View FIGURE 6 A–C, 7A, B).

Distribution. Known only from type locality.