Clubiona xiaokong Yu & Li, 2021

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

publication ID

https://dx.doi.org/10.3897/zookeys.1034.59413

publication LSID

lsid:zoobank.org:pub:A2937A0D-FF04-468F-B2DB-6AC4D68ED997

persistent identifier

https://treatment.plazi.org/id/D63C0094-D38F-4FFC-9937-D0A336324E28

taxon LSID

lsid:zoobank.org:act:D63C0094-D38F-4FFC-9937-D0A336324E28

treatment provided by

ZooKeys by Pensoft

scientific name

Clubiona xiaokong Yu & Li
status

sp. nov.

Clubiona xiaokong Yu & Li sp. nov. Figs 22 View Figure 22 , 74A View Figure 74 , 82A View Figure 82 , 90A View Figure 90

Holotype.

♀ (IZCAS-Ar 34753), China: Yunnan Province: Xishuangbanna: Mengla County: Menglun Town: XTBG, Anogeissus acuminata Clubiona plantation (ca. 20 yr.), 21°53.819'N, 101°17.075'E, ca. 609 m, 27.XI.2009, G. Tang and Z.Y. Yao leg. Other material examined. 1♀ (YHCLU0078), XTBG, secondary tropical forest, 21°54.833'N, 101°16.781'E, ca. 617 m, 26.IV.2019, Z.G. Chen leg.

Etymology.

The specific name is derived from the Chinese pinyin xiǎo kǒng, which means small opening, referring to the small atrium; noun in apposition.

Diagnosis.

The new species is similar to C. falciforma ( Liu et al. 2016: 567, figs 30, 31, 35, 36) by the ɔc-shaped spermathecae. From C. falciforma , the female of the new species can be easily distinguished by: the nearly trapezoidal atrium distinctly longer than wide (Figs 22A-C View Figure 22 , 74A View Figure 74 , 82A View Figure 82 ) (vs. elliptical atrium wider than long; Liu et al. 2016: figs 30, 35); copulatory openings located at lateral atrial borders (Figs 22A-C View Figure 22 , 74A View Figure 74 , 82A View Figure 82 ) (vs. situated basolaterally in atrium; Liu et al. 2016: figs 30, 35); (and the transverse copulatory ducts (Figs 22D, E View Figure 22 , 90A View Figure 90 ) (vs. copulatory ducts descending longitudinally; Liu et al. 2016: figs 31, 36).

Description.

Female. Holotype (Fig. 22F, G View Figure 22 ): Total length 6.48; carapace 3.28 long, 2.26 wide; opisthosoma 3.19 long, 2.03 wide. Carapace elongate, oval, light brown, uniformly coloured, without pattern, fovea red; pars cephalica slightly narrowed, cervical groove indistinct; tegument smooth, with erect, thin, dark setae on front ridge. Eyes: In dorsal view, AER slightly recurved, PER almost straight, PER wider than AER. Eye sizes and interdistances: AME 0.13, ALE 0.16, PME 0.14, PLE 0.12, AME-AME 0.16, AME-ALE 0.11, PME-PME 0.35, PME-PLE 0.25, MOQL 0.36, MOQA 0.46, MOQP 0.68. Chelicerae protruding and robust, coloured as carapace, with long, orange fangs, with five promarginal and two retromarginal teeth. Sternum nearly white, 1.60 long, 1.10 wide. Labium and endites coloured as carapace. Legs light coloured, dorsally slightly darker, without markings. Leg measurements: I 6.23 (1.76, 2.60, 1.18, 0.68), II 6.87 (2.04, 2.68, 1.34, 0.81), III 5.97 (1.85, 2.15, 1.39, 0.57), IV 8.26 (2.35, 2.72, 2.41, 0.78). Abdomen oval and light brown, without pattern, dorsum densely covered with long, dark setae on a light background; venter sparsely covered with short, white setae.

Epigyne (Figs 22A-E View Figure 22 , 74A View Figure 74 , 82A View Figure 82 , 90A View Figure 90 ). Epigynal plate slightly longer than wide, margin not rebordered; spermathecae and bursae indistinctly visible through transparent integument. Atrium represented by small pore, ca. 2 × longer than wide, ca. 1/6 of epigyne length and 1/11 of epigyne width. Copulatory openings large, situated laterally on the atrium. Copulatory ducts short and thick, heavily sclerotised, expanding laterally, then connecting to tubular spermathecae. Spermathecae long, consisting of smooth proximal half and wrinkled distal half, with small fertilisation ducts terminally, proximal half shaped like ɔc, the distal half irregularly shaped. Bursae reniform, close together, distinctly larger than spermathecae, 1.3 × longer than wide, surface translucent and smooth.

Male. Unknown.

Distribution.

Known only from the type locality, Xishuangbanna, Yunnan, China.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Clubionidae

Genus

Clubiona