Clubiona subtongi 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

Clubiona subtongi Yu & Li sp. nov. Figs 28 , 29 , 57D , 67D

Holotype

♂ (IZCAS-Ar 34759, YHCLU0056),: Yunnan Province: Xishuangbanna: Mengla County: Menglun Town: XTBG, Anogeissus acuminata Clubiona plantation , 21°54.033'N, 101°16.900'E, ca. 606 m, 2.VIII.2018, Z.G. Chen et al. leg.

Etymology.

The specific name is taken from its similarity to Clubiona tongi ; modified noun (name) in genitive case..

Diagnosis.

Clubiona subtongi sp. nov. resembles C. tongi ( Yu and Li 2019b: 212, figs 9A-E, 10E, F; Figs 57B , 67B ) by having similar pale colouration and habitus (Fig. 29 ; Yu and Li 2019b: fig. 10E, F) and general shape of the palp (Figs 28A-E , 57B , 67B ; Yu and Li 2019b: 212, fig. 9A-E) but can be distinguished by the: (1) embolar apex terminating at approximately the 4 o’clock position (Figs 28D , 57D ) (vs. relatively longer tip terminating at approximately the 5 o’clock position; Figs 57B , 67B ); (2) tegular hump that is ca. 1/5 tegulum length (Figs 28D , 57D ) (vs. tegular hump ca. 1/3 tegulum length; Fig. 57B ); (3) tegular base is unmodified (Figs 28B , 57D , 67D ) (vs. with a papilliform flange; Fig. 67B ).

Description.

Male. Holotype (Fig. 29 ): Total length 4.63; carapace 2.13 long, 1.54 wide; opisthosoma 2.50 long, 1.16 wide. Carapace light brown, slightly darker on the front ridge, without pattern, ocular area slightly narrowed, cervical groove indistinct; tegument smooth, marginally clothed with long, thin setae. Eyes: in dorsal view, AER slightly recurved, PER slightly procurved, PER slightly wider than AER. Eye sizes and interdistances: AME 0.09, ALE 0.10, PME 0.12, PLE 0.11, AME-AME 0.06, AME-ALE 0.03, PME-PME 0.26, PME-PLE 0.15, MOQL 0.33, MOQA 0.30, MOQP 0.46. Chelicerae brownish red, promargin with six teeth, retromargin with three teeth. Sternum yellowish white, 1.38 long, 0.95 wide. Labium and endites coloured as carapace. Legs yellowish white, without distinct markings. Leg measurements: I 4.28 (1.30, 1.70, 0.80, 0.48), II 4.70 (1.29, 1.98, 0.93, 0.50), III 3.83 (1.13, 1.28, 0.94, 0.49), IV 6.22 (1.88, 2.05, 1.79, 0.49). Abdomen lanceolate, dorsally grey with a lengthwise white heart shaped mark, reaching posterior half; with a pair of muscle depressions located on both sides of heart-shaped mark; venter centrally with an inverted trapezoidal orange patch.

Palp (Figs 28 , 57D , 67D ). Femur and patella unmodified. Tibia short, ca. 1/3 of cymbium length, with single retrolateral apophysis; RTA small, ca. 1/3 palpal tibia length, with a thumb-like base and spine-like tip. Tegulum elongate, oval, relatively flat, 2.1 × longer than wide, sperm duct distinct, V-shaped; tegular hump prominent, ca. 1/5 of tegulum length. Embolus filiform, originating on the retrolateral flank (ca. 10-11 o’clock on tegulum), aligning clockwise along the tegular hump, apex filiform, terminating at ca. 4 o’clock position.

Female. Unknown.

Comments.

According to the WSC (2021), a total of eight described C. ternatensis group species are known only from females (See Table 4 ). We describe this species based on the male, although it may be synonymised in future.

Distribution.

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

Figures

Figure 28. Male palp of the holotype of Clubiona subtongi sp. nov. A prolateral view B retrolateral view C bulb, prolateral view D bulb, ventral view E bulb, retrolateral view. Abbreviations: E = embolus; EB = embolar base; RTA = retrolateral tibial apophysis; TH = tegular hump. Scale bars: 0.1 mm (equal for A, B, equal for C-E).

Figure 29. Habitus of the male holotype of Clubiona subtongi sp. nov. A dorsal view B ventral view C lateral view. Scale bar: 1 mm (equal for A-C).

Figure 57. Clubiona spp. of the C. ternatensis group, male palp, ventral view A C. theoblicki B C. tongi C C. subkuu D C. subtongi sp. nov., holotype E C. zhengi. Abbreviations: E = embolus; EB = embolar base; RTA = retrolateral tibial apophysis; TH = tegular hump. Scale bars: 0.1 mm.

Figure 67. Clubiona spp. of the C. ternatensis group, male palp, retrolateral view A C. theoblicki B C. tongi C C. subkuu D C. subtongi sp. nov., holotype E C. zhengi. Abbreviations: E = embolus; RTA = retrolateral tibial apophysis; VTA = ventral tibial apophysis. Scale bars: 0.1 mm.