Jacaena bannaensis, Mu & Zhang, 2020

Mu, Yannan & Zhang, Feng, 2020, The genus Jacaena Thorell, 1897 from southern China (Araneae: Liocranidae), Zootaxa 4819 (2), pp. 335-348 : 339-340

Jacaena bannaensis sp. n. (+¬×ƚ,)

Figs 1 A–C, 2A, 4

Type material. Holotype ♂ (YNBN-17-0515), CHINA, Yunnan Province, Dai Autonomous Prefecture of Xish-uangbanna, Mengla County, Menglun Town , Xishuangbanna Tropical Botanical Garden of Chinese Academy of Sciences, Lvshi Forest (21°54′40.59′′N, 101°17′02.39′′E), 683 m a.s.l., 15 May 2017, leg. Beibei Zhou. Paratype: 1♀, Yunnan Province, Dai Autonomous Prefecture of Xishuangbanna, Jinghong City , 23 Oct 1986, leg. Mingsheng Zhu ; 1♀, Hainan Province, Chengmai County, Heling Farm, Dawangling , 17 May 2015, leg. Chi Jin ; 2♀ 1♂ 2j, Hainan Province, Qiongzhong County, on the road to Limu Mountain , 21 May 2015, leg. Li’na Fu ; 2♀ 2♂, Hainan Province, Wuzhishan City, Shuiman Town, Wuzhishan tropical rainforest scenic spot, 25 Jan 2015, leg. Xiangbo Guo ; 2♀ 2♂, Hainan Province, Changjiang County, Bawangling Mountain , 4 Feb 2015, leg. Baoshi Zhang ; 1♀ 2♂, Hainan Province, Changjiang County, Bawangling Mountain , 4 Feb 2015, leg. Chi Jin ; 1♀ 1♂ 2j, Hainan Province, Ledong Li Autonomous County, Jianfengling Mountain , 31 Jan 2015, leg. Li’na Fu ; 1♀, Hainan Province, Qiong-zhong County, Limushan Town, Qijiafang holiday village, 20 Jan 2015, leg. Chi Jin ; 1♀, Hainan Province, Ledong Li Autonomous County, Jianfengling Mountain , 26 May 2011, leg. Chao Zhang ; 1♂ (HaiN-16-02), Hainan Prov-ince, Qiongzhong County, on the road to Limu Mountain (19°10′37.62′′N, 109°45′00.84′′E), 694 m a.s.l., 4 April 2016, leg. Chi Jin ; 1♀ (HaiN-16-04) Hainan Province, Qiongzhong County, Shuiman Town, Wuzhishan tourist area (18°54′09.89″N, 109°41′18.27″E), 930 m a.s.l., 6 April 2016, leg. Chi Jin ; 1♀ (HaiN-16-05), Hainan Province, Wuzhishan City, Shuiman Town, Wuzhishan Tropical Rainforest Scenic Spot (18°52′11.64′′N, 109°40′22.56′′E), 800 m a.s.l., 7 April 2016, leg. Chi Jin ; 2♀ 1♂ (HaiN-16-07), Hainan Province, Ledong Li Autonomous County, Jianfengling Mountain (18°44′29.16′′N, 108°50′33.72′′E), 1068 m a.s.l., 9 April 2016, leg. Chi Jin ; 1♀ (HaiN-1608), Hainan Province, Ledong Li Autonomous County, Jianfengling Mountain Forestry Bureau (18°44′13.50′′N, 108°51′32.04′′E), 885 m a.s.l., 10 April 2016, leg. Chi Jin ; 1♂ (Y940 IL1 ) , 1♀ (H9403L3b), no detailed collection information.

Etymology. The species name is a noun in apposition, derived from the type locality.

Diagnosis. This new species resembles Jacaena mihun ( Deeleman-Reinhold, 2001) , but can be easily distinguished by: (1) the long and circular embolus (vs narrower and shorter); (2) the thin base of the embolus (vs wider than all other species); (3) the simple coiled and folding copulatory duct (vs complex).

Description. Male (Holotype). Total body length 4.88: carapace 2.45 long, 1.95 wide; abdomen 2.43 long, 1.55 wide. Carapace black brown, darker in eye area; radial granulated integument on carapace; cephalic area relatively broad; fovea deep and round. Eye sizes and interdistances: AME 0.15, ALE 0.15, PME 0.10, PLE 0.13; AME–AME 0.18, AME–ALE 0.13, PME–PME 0.20, PME–PLE 0.20, ALE–PLE 0.20; MOA 0.25 long, anterior width 0.18, posterior width 0.23. Clypeal height 0.15, equal to the diameter of AME. Labium longer than wide, tip cambered and with several setae. Leg spination: femur I with 2 strong pl spines, other femora spineless; femur I with 2 strong pl spines ( Fig. 1 ), other femora spineless; tibia I with 7 pv and 8 rv spines, tibia II with 6 pv and 6 rv spines, tibia III with 2 pl and 1 rv spines, tibia IV with 3 pv and 2 rv spines, and 1 rl spine; metatarsus I with 5 pairs spines ventrally, metatarsus II with 4 pairs spines ventrally, metatarsus III with 1 pl, 1 rl and 1 pair ventral spines, metatarsus IV with 1 pl, 1 rl and 2 pairs ventral spines. Leg I 6.81 (1.28+0.85+1.95+1.80+0.93); Leg II 6.03 (1.68+0.69+1.29+1.45+0.9 2); Leg III 3.19 (0.59+0.56+0.69+0.92+0.43); Leg IV 7.32 (1.52+0.96+1.91+1.95+0.98). Leg formula: 4123. Other characters as same as J. aspera sp. n., except color.

Abdomen ovoid and gray, with small distinct dorsal scutum (occupying less than half the length of the abdomen), wrinkled at both sides.

Palp as illustrated ( Fig. 4 D–F). Tibia short, red-brown, RTA with two processes, sclerotized dorsal and membranous ventral surface; dRTA wide, pRTA small. Color of tegulum same as tibia, reniform, with distinct sperm duct and spiral and cuspidal tegular apophysis. Embolus long, with thin base, strongly coiled, tip along with tegular apophysis. Conductor membranous, behind embolus.

Female. One female paratype total body length 5.83: carapace 2.90 long, 2.30 wide; abdomen 2.93 long, 1.93 wide. Carapace black brown, with metallic lustre, darker in eye area; radial granulate integument on carapace; cephalic area relatively broad; fovea deep and round. Eye sizes and interdistances: AME 0.16, ALE 0.15, PME 0.12, PLE 0.14; AME–AME 0.25, AME–ALE 0.18, PME–PME 0.26, PME–PLE 0.30, ALE–PLE 0.20; MOA 0.25 long, anterior width 0.18, posterior width 0.23. Clypeal height 0.16, equal to the diameter of AME. Leg spination: tibia I with 7 pv and 8 rv spines, tibia II with 8 pv and 9 rv spines, tibia III with 1 pl and 2 rv spines, tibia IV with 1pv and 4 rv spines; metatarsus I with 4 pairs spines ventrally, metatarsus II with 4 pairs spines ventrally, metatarsus III with 1 pl, 1pv and 1 rv spines, metatarsus IV with 3pv and 3 rv spines. Leg I 7.49 (1.90+0.95+2.30+1.35 +0.99); Leg II 7.03 (1.80+0.90+1.80+1.49+1.04); Leg III 6.38 (1.71+0.81+1.35+1.48+1.03); Leg IV 9.00 (2.30+0.90+2.16+2.43+ 1.21). Leg formula: 4123. Other characters same as male .

Abdomen ovoid, without dorsal scutum, brownish gray, with two pairs of muscular impressions centrally. Venter of abdomen light brown.

Epigynum as in Fig. 4 A–C. Epigynal plate sclerotized, two copulatory openings concave and oval, located at center of epigynal plate. Copulatory ducts long and coiled; fertilization ducts short. Spermathecae large, separated into two parts.

Distribution. China ( Fig. 9 , Yunnan Province, Hainan Province).

Figures

FIGURE 1. Jacaena spp. habitus. J. bannaensis sp. n. (A–C); J. aspera sp. n. (D–F); J. luteolus sp. n. (G); J. menglaensis sp. n. (H). A male (holotype) habitus, dorsal view; B female habitus, dorsal view; C same, ventral view; D male (holotype) habitus, dorsal view; E female habitus, dorsal view; F same, ventral view; G male (holotype) habitus, dorsal view; H male (holotype) habitus, dorsal view.

FIGURE 4. Jacaena bannaensis sp.n.. A epigyne, ventral view; B same, dorsal view; C same, dorsal view; D male left palp, prolateral view; E same, ventral, view; F same, retrolateral view.

FIGURE 9. Distribution in China of the Jacaena species treated in this paper.