Cydrela likui Lin & Li, 2023

Lin, Yejie, Li, Shuqiang & Pham, Dinh-Sac, 2023, Taxonomic notes on some spider species (Arachnida: Araneae) from China and Vietnam, Zoological Systematics 48 (1), pp. 1-99 : 84-89

Cydrela likui Lin & Li , sp. nov. ( Figs 74–75 , 84C–D )

Etymology. The species is named after Li Kui, one of the 108 outlaws in the classical Chinese literature Outlaws of the Marsh; noun in apposition.

Diagnosis. The male of the new species is similar to C. pristina Dankittipakul & Jocqué, 2006 by the bifurcated tip of the retrolateral tibial apophysis, the translucent, long, slender embolus, and the female is similar by the epigynal hood and oval spermathecae. However, the new species can be distinguished from C. pristina by the dorsally directed dorsal part of the retrolateral tibial apophysis (vs. directed anteriorly in C. pristina ) and the flat distal part of the conductor (vs. bifurcated in C. pristina ). The female can be distinguished by the C-sharped copulatory ducts (vs. slightly curved in C. pristina ) and the epigynal hood wider than long (vs. as long as wide in C. pristina ).

Description. Male (holotype). Total length 4.29; carapace 2.17 long, 1.33 wide, opisthosoma 2.12 long, 1.27 wide. Eye sizes and interdistances: AME 0.04, ALE 0.08, PME 0.07, PLE 0.08, AME–AME 0.02, AME–ALE 0.03, PME–PME 0.05, PME–PLE 0.14, AME–PME 0.06, ALE–PLE 0.21. Leg measurements: I 5.29 (1.45, 1.82, 1.12, 0.90), II 4.72 (1.29, 1.56, 1.06, 0.82), III 4.80 (1.28, 1.41, 1.22, 0.89), IV 6.53 (1.60, 1.83, 1.95, 1.15).

Coloration ( Fig. 84C ). Carapace brown with white setae. Chelicerae, endites and labium brown. Sternum yellow-brown. Legs yellow-brown to brown with black setae. Opisthosoma oval, dark brown, dorsum with three pairs of pale oblong spots, first one largest, followed by hourglass-shaped spots, first one largest. Spinnerets yellow-brown.

Palp ( Fig. 74 ). Patella wide in lateral view, tibia as long as wide, Retrolateral tibial apophysis as long as tibia, ventral ramus shorter and blunt, dorsal ramus longer and digitiform. Cymbium with six spines on distal part, 1.5 times longer than wide. Bulb almost oval. Conductor membranous, posterior portion lightly sclerotized; anterior part forming a groove, accommodating elongate embolus, originating at clock 6:00 position.

Female (IZCAS-Ar44043). Total length 6.50; carapace 2.89 long, 1.26 wide, opisthosoma 3.61 long, 1.42 wide. Eye sizes and interdistances: AME 0.05, ALE 0.09, PME 0.08, PLE 0.10, AME–AME 0.04, AME–ALE 0.05, PME–PME 0.06, PME–PLE 0.10, AME–PME 0.10, ALE–PLE 0.31. Leg measurements: I 4.96 (1.50, 1.77, 0.91, 0.78), II 4.62 (1.37, 1.58, 0.94, 0.73), III 5.06 (1.43, 1.50, 1.33, 0.80), IV 6.90 (1.84, 1.89, 2.04, 1.13).

Coloration ( Fig. 84D ). Similar to that of male except paler.

Epigyne ( Fig. 75 ). Epigynal plate 1.5 times wider than long, with small hood, longer than wide. Copulatory opening obvious. Copulatory ducts thick. Spermathecae kidney shaped.

Material examined. Holotype ♂ (IZCAS-Ar44039), Vietnam: Ninh Binh, Cuc Phuong National Park, Natural Forest , Sieving , (20.3428°N, 105.6004°E, elev. 408 m), 8 October 2007, Dinh-Sac Pham leg. Paratypes. 3♂ 1♀ (IZCAS-Ar44040– Ar44043), same data as holotype .

Distribution. Known only from the type locality.

Figures

Figure 74. Cydrela likui Lin & Li, sp. nov., holotype male. A. Left palp, ventral view; B. Same, retrolateral view. Abbreviations: C— conductor; E—embolus; RTA—retrolateral tibial apophysis. Scale bars=0.1 mm.

Figure 75. Cydrela likui Lin & Li, sp. nov., paratype female. A. Epigyne, ventral view; B. Vulva, dorsal view. Abbreviations: CD— copulatory duct; CO—copulatory opening; FD—fertilization duct; H—hood; S—spermatheca. Scale bars=0.1mm.

Figure 84. Habitus, dorsal view, male (A, C, E, G, I) and female (B, D, F, H, J). A–B. Asceua shuangreni Lin & Li, sp. nov.; C–D. Cydrela likui Lin & Li, sp. nov.; E–F. Mallinella lisongi Lin & Li, sp. nov.; G–H. M. pingzhoui Lin & Li, sp. nov.; I–J. M. sena Lin & Li, sp. nov. Scale bars: A–B=0.5mm; C–J=1.0mm.