Eriovixia pseudocentrodes ( Bösenberg & Strand, 1906 ), Bosenberg & Strand, 1906

Mi, Xiao-Qi, Peng, Xian-Jin & Yin, Chang-Min, 2010, The orb-weaving spider genus Eriovixia (Araneae: Araneidae) in the Gaoligong Mountains, China, Zootaxa 2488, pp. 39-51 : 43-44

Eriovixia pseudocentrodes ( Bösenberg & Strand, 1906)

Figs 9–16 , 35

Aranea pseudocentrodes Bösenberg & Strand, 1906: 232 , pl. 15, fig. 415.

Heurodes pseudocentrodes Yaginuma & Archer, 1959: 36 .

Araneus pseudocentrodes Yaginuma, 1986: 99 , fig. 53.1e; Chikuni, 1989: 68, fig. 21; Chen & Zhang, 1991: 85, fig. 75.1–2; Yin et al., 1997: 140, fig. 55a–e; Song, Zhu & Chen, 1999: 240, figs 139W–X, 148S.

Eriovixia pseudocentrodes Tanikawa, 1999: 43 , figs 1–3, 5–8; Tanikawa, 2007: 90, figs. 282–284, 748–749; Tanikawa, 2009: 461, figs 319–320.

Material examined: China: Yunnan Province: 1 male, Gongshan County, Dulongjiang Township, Maku Village, 27.68875ºN, 98.31303ºE, 1677 m, 3 September 2006, Peng Hu (CAS-Hu 060903); 1 female, Longling County, Longjiang Township, Xiaoheishan Nature Reserve, 24.82886ºN, 98.75917ºE, 2010 m, in the forest, 26 May 2005, Heng-mei Yan (HNU-GKJ026); 1 female and 1 male, Fugong County, Maji Township, Majimi Village, 27.39828ºN, 98.82650ºE, 1350 m, 26 August 2005, Guo Tang (HNU-Tang-05-11); 1 female, Tengchong County, Jietou Township, Datang Village Daheling Ganjiao, 25.74556°N, 98.69630°E, 2030 m, 15 May 2006, Xian-jin Peng, Xin-ping Wang and Peng Hu (CAS-PWH 060515); 1 female, Tengchong County, Jietou Township, Datang Village, Longtanghe, 25.75720°N, 98.69459°E, 2078 m, 16 May 2006, Xian-jin Peng, Xin-ping Wang and Peng Hu (HNU-PWH 060516); 3 females, Tengchong County, Jietou Township, Datang Village, Daheling Ganjiao, 25.42018°N, 98.40946°E, 1878 m, 19 May 2006, Xianjin Peng, Xin-ping Wang and Peng Hu (CAS-PWH 060519); 1 female, Tengchong County, Houqiao Township, 25.35391°N, 98.25488°E, 1785 m, 28 May 2006, Xin-ping Wang and Peng Hu (CAS- WANG 060528 (1)); 2 females, Gongshan County, Dulongjiang Township, Qinglangdang, 27.69033ºN, 98.27901ºE, 1309 m, 1 September 2006, Peng Hu (HNU-Hu_ 060901); 1 female, Fugong County, Lumadeng Township, Bacunhe river, south shore, 1.96 km 350°N Pihe on Nujiang, 26.54978°N, 98.89438°E, 1090 m, 29 April 2004, Charles Griswold and David Kavanaugh (HNU-CGY19).

Diagnosis. The female of this species can be distinguished from all other congeneric species by having the caudal part of the abdomen extend beyond the spinnerets; the latter are placed at the anterior third of the abdomen. The male of this species can be distinguished from all other congeneric species by having the median apophysis with two dorsal spurs close to each other and by the wide and flattened terminal apophysis. Description. Female (based on one of HNU-Hu_ 060901): Total length 5.65. Prosoma 1.65 long, 1.40 wide; ophisthosoma 4.25 long, 2.75 wide. Carapace piriform, longer than wide, narrow in eye region, covered with white seta, yellowish brown in cephalic region and around fovea, thoracic region with radial yellow patches, cervical groove deep, cephalic region slightly elevated, fovea transverse, depressed ( Fig. 9 ). Eye sizes and interdistances: ALE 0.09, PLE 0.09, AME 0.10, PME 0.11; AME-AME 0.11, AME-ALE 0.28, PME-PME 0.14, PME-PLE 0.31, MOA 0.30 long with front width 0.28 and back width 0.31. Clypeus height 0.10. Sternum cordate, yellow; chelicerae yellowish brow, with four promarginal and three retromarginal teeth; gnathocoxae and labium yellowish brown. Legs yellowish brown with inconspicuous annuli, leg measurements: I 5.90 (2.00, 2.15, 1.20, 0.55), II 4.80 (1.55, 1.75, 1.00, 0.50), III 2.90 (1.00, 1.00, 0.50, 0.40), IV 4.05 (1.35, 1.40, 0.85, 0.45), leg formula: I, II, IV, III. Ophisthosoma longer than wide, globular anteriorly and pointed posteriorly, posterior end far beyond the spinnerets, dorsum with a pale folium and grayish brown margins ( Fig. 9 ). Venter grayish brown. Epigynum triangular, scape rimmed ( Figs 11–13 ); copulatory ducts long, curved ( Fig. 13 ); spermathecae oval ( Figs 11–13 ).

Male (based HNU-Tang-05-11): Total length 2.90. Prosoma 1.65 long, 1.25 wide; ophisthosoma 1.45 long, 1.25 wide. Coloration as in female ( Fig. 10 ). Eye sizes and interdistances: ALE 0.09, PLE 0.09, AME 0.10, PME 0.10; AME-AME 0.10, AME-ALE 0.21, PME-PME 0.13, PME-PLE 0.26, MOA 0.28 long with front width 0.28 and back width 0.29. Leg measurements: I 5.10 (1.60, 1.90, 1.10, 0.50), II 4.10 (1.30, 1.40, 0.95, 0.45), III 2.50 (0.85, 0.85, 0.45, 0.35), IV 3.55 (1.20, 1.20, 0.80, 0.35), leg formula: I, II, IV, III. Pedipalp with small paracymbium ( Fig. 15 ); median apophysis wide, with two compact dorsal spurs ( Figs 14–16 ); conductor broad, wrapping the tip of embolus ( Figs 14–15 ); embolus slender ( Fig. 14 ); terminal apophysis wide, lamellar ( Figs 14–15 ).

Variation. Females, total length 3.90–5.70; males, total length 2.90–3.90.

Distribution. China (Yunnan, Jiangxi, Fujian), Japan.

Figures

FIGURES 9 – 10. Eriovixia pseudocentrodes (Bösenberg & Strand, 1906). 9, female habitus, dorsal view; 10, male habitus, dorsal view. Scale bars = 1 mm.

FIGURES 11 – 16. Eriovixia pseudocentrodes (Bösenberg & Strand, 1906). 11, epigynum, ventral view; 12, epigynum, lateral view; 13, vulva, dorsal view; 14, left palp, prolateral view; 15, left palp, ventral view; 16, median apophysis. Scale bars = 0.1 mm.

FIGURES 34 – 37. Distribution records of the species: 34, Eriovixia excelsa (Simon, 1889); 35, Eriovixia pseudocentrodes (Bösenberg & Strand, 1906); 36, Eriovixia sticta n. sp.; 37, Eriovixia yunnanensis (Yin et al., 1990).