Clubiona cochlearis Yu & Li, 2019

Zhang, Jianshuang, Yu, Hao & Li, Shuqiang, 2021, Taxonomic studies on the sac spider genus Clubiona (Araneae, Clubionidae) from Xishuangbanna Rainforest, China, ZooKeys 1034, pp. 1-163 : 1

Clubiona cochlearis Yu & Li, 2019 Figs 1 , 53A , 63A , 73A , 81A , 89A

Clubiona cochlearis Yu & Li, 2019b: 202, figs 1A-E, 2A-C (♂).

Material examined.

Types. Holotype ♂ (IZCAS Ar 34701), China: Yunnan Province: Xishuangbanna: Mengla County: Menglun Town : XTBG, Paramichelia baillonii Clubiona plantation , 21°54.772'N, 101°16.043'E, ca. 556 m, 18.VII.2007, G. Zheng leg. Other material examined. 1♀, Jinghong City : Pingguan Town, monsoon forest, 22°13.212'N, 100°53.151'E, ca. 832 m, 21.VII.2012, Q.Y. Zhao and C.X. Gao leg ; 1♂ (YHCLU0068), Mengyang County: monsoon forest, 21°54.117'N, 101°55.210'E, ca. 856 m, 16.VII.2012, Q.Y. Zhao and C.X. Gao leg ; 1♀ (YHCLU0079), Jinghong City : Pingguan Town, monsoon forest, 22°13.668'N, 100°53.351'E, ca. 888 m, 20.VII.2012, Q.Y. Zhao and C.X. Gao leg.

Diagnosis.

Females of C. cochlearis are similar to those of C. lyriformis ( Yin et al. 2012: 1110, fig. 586a-c). The two species share a similarly large atrium, tubular and sinuous spermathecae, and the copulatory ducts are proximally wide and distally narrow. They differ in the following: (1) atrium is nearly apple-shaped in C. cochlearis (Figs 1A-C , 73A , 81A ) (vs. atrium shaped like a violin in C. lyriformis ; Yin et al. 2012: fig. 586b); (2) size and location of copulatory openings (copulatory openings are larger and situated laterally in atrium in C. cochlearis vs. relatively small and located at basolateral atrial borders in C. lyriformis ) (cf. Figs 1A-C , 73A , 81A and Yin et al. 2012: fig. 586c). Males of C. cochlearis can be easily recognised by the robust, spoon-shaped embolus (Figs 53A , 63A ) from all others in the species group.

Description.

Male. See Yu and Li (2019b). Male palp as in Figs 53A , 63A .

Female (Fig. 1F, G ). Total length 7.38; carapace 3.64 long, 2.61 wide; opisthosoma 3.75 long, 2.53 wide. Carapace brown, darker in cephalic area, without distinct pattern; cephalic region slightly narrowed, cervical groove indistinct; tegument smooth, with short, fine setae. Eyes: AER slightly recurved, PER slightly wider than AER, almost straight in dorsal view. Eye sizes and interdistances: AME 0.16, ALE 0.10, PME 0.13, PLE 0.15, AME-AME 0.21, AME-ALE 0.18, PME-PME 0.49, PME-PLE 0.38, MOQL 0.40, MOQA 0.49, MOQP 0.76. Chelicerae robust and brownish red, with four promarginal teeth and two retromarginal denticles. Sternum pale brown, 1.86 long, 1.24 wide. Labium and endites coloured as carapace. Legs light brown, without distinct markings. Leg measurements: I 7.18 (2.20, 2.88, 1.33, 0.77), II 7.66 (12.21, 3.12, 1.47, 0.85), III 7.11 (2.34, 2.53, 1.60, 0.65), IV 9.65 (2.93, 3.32, 2.61, 0.78). Abdomen oval, dorsally grey with dense setae and a lengthwise white heart mark reaching posterior half; with a pair of muscle depressions located at distal part of heart mark; venter uniformly white, without pattern.

Epigyne (Figs 1A-E , 73A , 81A , 89A ). Epigynal plate nearly as broad as long, spermathecae and bursae indistinctly visible through integument. Atrium ca. 1/3 of epigyne length and width, more or less apple-shaped, slightly concave anteromedially. Copulatory openings large, located at lateral atrial borders. Copulatory ducts long, proximally thick-walled, extend posteriorly, the latter half slender, ascending obliquely, then connecting with spermathecae at central axis of the vulva. Spermathecae tubular, long and sinuous, strongly convoluted. Fertilisation ducts short and curved, acicular. Bursae situated posteriorly, ovoid, relatively large, close together, ca. 1.5 × longer than wide, surface translucent and smooth.

Distribution.

Known only from Xishuangbanna.

Remarks.

The female of the species is described for the first time.

Figures

Figure 1. Clubiona cochlearis, epigyne (A-E) and female habitus (F, G) A intact, ventral view B cleared, ventral view C cleared, ventral view D cleared, dorsal view E cleared, dorsal view F dorsal view G ventral view. Abbreviations: A = atrium; BS = bursa; CD = copulatory duct; CO = copulatory opening; FD = fertilisation duct; SH = spermathecal head; SP = spermatheca. Scale bars: 0.2 mm (equal for A-E); 1 mm (equal for F, G).

Figure 53. Clubiona spp. of the C. corticalis group, male palp, ventral view A C. cochlearis B C. rama C C. subrama D C. zhigangi sp. nov., holotype. Abbreviations: C = conductor; E = embolus. Scale bars: 0.2 mm.

Figure 63. Clubiona spp. of the C. corticalis group, male palp, retrolateral view A C. cochlearis B C. rama C C. subrama D C. zhigangi sp. nov., holotype. Abbreviations: C = conductor; E = embolus; RTA = retrolateral tibial apophysis; VTA = ventral tibial apophysis. Scale bars: 0.2 mm.

Figure 73. Clubiona spp. of the C. corticalis group, epigyne, intact, ventral view A C. cochlearis B C. dengpao sp. nov., holotype C C. yejiei sp. nov., holotype D C. tixing sp. nov., holotype E C. subrama F C. zhigangi sp. nov., paratype. Abbreviations: A = atrium; AM = atrial membrane; CO = copulatory opening. Scale bars: 0.2 mm.

Figure 81. Clubiona spp. of the C. corticalis group, epigyne, cleared, ventral view A C. cochlearis B C. dengpao sp. nov., holotype C C. yejiei sp. nov., holotype D C. tixing sp. nov., holotype E C. subrama F C. zhigangi sp. nov., paratype. Abbreviations: A = atrium; AM = atrial membrane; CO = copulatory opening. Scale bars: 0.2 mm.

Figure 89. Clubiona spp. of the C. corticalis group, vulva, cleared dorsal view A C. cochlearis B C. dengpao sp. nov., holotype C C. yejiei sp. nov., holotype D C. tixing sp. nov., holotype E C. subrama F C. zhigangi sp. nov., paratype. Abbreviations: BS = bursa; CD = copulatory duct; FD = fertilisation duct; SH = spermathecal head; SP = spermatheca. Scale bars: 0.2 mm.