Yaginumaella zabkai Wang, Mi & Peng, 2023

Wang, Cheng, Mi, Xiao-Qi, Wang, Wei-Hang, Gan, Jia-Hui, Irfan, Muhammad, Zhong, Yang & Peng, Xian-Jin, 2023, Notes on twenty-nine species of jumping spiders from South China (Araneae: Salticidae), European Journal of Taxonomy 902, pp. 1-91 : 82-88

Yaginumaella zabkai Wang, Mi & Peng sp. nov.

urn:lsid:zoobank.org:act:518666B8-AD14-4035-93B2-5531B3F4BA0F

Figs 54–55 , 57

Diagnosis

The male of Yaginumaella zabkai Wang, Mi & Peng sp. nov. resembles that of Y. dali Shao, Li & Yang, 2014 in the general shape of habitus and copulatory organs, but it can be distinguished by the following: (1) the embolus being acutely narrowed at distal end ( Fig. 54B ), whereas tapered in Y. dali ( Shao et al. 2014: fig. 4); (2) the RTA being about 1.5 times as long as tibia ( Fig. 54C ), whereas almost as long as tibia in Y. dali ( Shao et al. 2014: fig. 5). The female also resembles that of Y. dali in the general shape of epigyne, but it can be distinguished by the distance between the epigynal hoods, which is less than their width ( Fig. 55A ), whereas about 1.5 times as great as their width in Y. dali ( Shao et al. 2014: fig. 2).

Etymology

The specific name is a patronym in honor of Professor M. Żabka, who contributed significantly to the taxonomy of jumping spiders; noun (name) in genitive case.

Type material

Holotype

CHINA • ♂; Yunnan, Jingdong County, Taizhong Township, Dujuanhu ; 24°31.22′ N, 100°56.56′ E; 1504 m a.s.l.; 15 Aug. 2015; X.Q. Mi leg.; TRU-JS 0579 .

Paratypes

CHINA • 2 ♀♀, 1 ♂; same collection data as for holotype; TRU-JS 0580–0582 • 1 ♀, 1 ♂; Nanjian County, Yongcui Township , Fenghuang Mountain; 24°55.99′ N, 100°22.51′ E; 1850 m a.s.l.; 13 Aug. 2015; X.Q. Mi leg.; TRU-JS 0583–0584 .

Description

Male (holotype)

MEASUREMENTS. Total length 4.61. Carapace 2.12 long, 1.75 wide. Abdomen 2.40 long, 1.68 wide. Eye sizes and inter-distances: AME 0.50, ALE 0.29, PLE 0.26, AERW 1.58, PERW 1.50, EFL 1.02. Legs: I 4.84 (1.53, 0.63, 1.25, 0.88, 0.55), II 4.18 (1.28, 0.75, 1.05, 0.65, 0.45), III 4.79 (1.45, 0.75, 1.03, 1.01, 0.55), IV 5.06 (1.50, 0.70, 1.15, 1.13, 0.58).

HABITUS. Carapace yellow to red-brown, setose, with pair of marginal yellow bands, and longitudinal, yellow band extending across thorax; fovea longitudinal, linear, dark red ( Fig. 55C, F ). Chelicerae yellow, with two promarginal teeth and one retromarginal tooth ( Fig. 55G ). Legs yellow, with dark stripes on femora I, three, and two pairs of ventral macrosetae on tibiae and metatarsi I, respectively. Abdomen elongate-oval, dorsum yellow to dark brown, dotted laterally, with longitudinal yellow stripe anteromedially; venter pale yellow to brown, with longitudinal, irregular dark stripe medially ( Fig. 55C–D ).

PALP. Tibia wider than long, with straight, strongly sclerotized RTA about 1.5 times as long as its length and rather pointed apically; cymbium setose; bulb elongate-oval, swollen medio-posteriorly, with small posterior lobe curved towards postero-prolaterally; embolus strongly sclerotized, originates at about 9 o’clock position of bulb, curved into C-shape, and acutely narrowed distally ( Fig. 54 ).

Female (paratype, TRU-JS 0580)

MEASUREMENTS. Total length 5.28. Carapace 2.28 long, 1.88 wide. Abdomen 3.32 long, 2.20 wide. Eye sizes and inter-distances: AME 0.55, ALE 0.36, PLE 0.32, AERW 1.76, PERW 1.72, EFL 1.12. Legs: I 4.36 (1.45, 0.75, 0.88, 0.75, 0.53), II 3.94 (1.25, 0.63, 0.93, 0.65, 0.48), III 4.74 (1.50, 0.75, 0.93, 1.01, 0.55), IV 5.20 (1.63, 0.63, 1.13, 1.23, 0.58).

HABITUS. Similar to that of male ( Fig. 55E ).

EPIGYNE. Slightly longer than wide; atrium oval, anteriorly located, with pair of arc-shaped lateral ridges, followed by pair of hoods separated from each other less than their width; copulatory openings beneath atrial ridges; copulatory ducts long, curved and twisted; spermathecae indistinct; fertilization ducts lamellar, transversely extending ( Fig. 55A–B ).

Distribution

China (Yunnan) ( Fig. 57 ).

Discussion

Including the species described in the present work, the list of Chinese jumping spiders has increased to at least 651 species in 136 genera, representing about one-tenth, and one-fifth of the worldwide jumping spiders in number of species and genera, respectively, and far exceeding those of adjacent countries such as India (349 species in 110 genera), Vietnam (157 species in 69 genera) and Japan (149 species in 70 genera) ( Metzner 2023). However, it is certain that our current knowledge does not represent the true diversity of Chinese jumping spiders, as most of the Chinese regions remains poorly studied and taxonomic studies are very limited. The taxonomic study of jumping spiders from Xishuangbanna is a convincing example. Before 2016, Xishuangbanna, like most regions of China, was known only from several sporadic described species, but thanks to the conduction of “All Species Inventory” of spiders from the Xishuangbanna Tropical Botanical Garden, the number of known species in this region has risen to 145, including 58 new to science.According to the prediction of the eventual total number of Chinese spider species by Li (2020), the true diversity of Chinese jumping spiders will reach ca 1500 species. It might be expected most of them will be discovered in southern China, especially the tropical area and southwest mountain area. Among those, some large tribes, and some leaf-litter dwellers genera will present a very high diversity.

Figures

Fig. 54. Male palp of Yaginumaella zabkai Wang, Mi & Peng sp. nov., holotype (TRU-JS 0579). A. Prolateral view. B. Ventral view. C. Retrolateral view. Abbreviations: see Material and methods. Scale bars = 0.1 mm.

Fig. 55. Yaginumaella zabkai Wang, Mi & Peng sp. nov. A–B, E. Paratype, ♀ (TRU-JS 0580). C–D, F–G. Holotype, ♂ (TRU-JS 0579). A. Epigyne, ventral view. B. Vulva, dorsal view. C–E. Habitus. C. Dorsal view. D. Ventral view. E. Dorsal view. F. Carapace, frontal view. G. Chelicera, posterior view. Abbreviations: see Material and methods. Scale bars: A–B, G = 0.1 mm; C–F = 0.5 mm.

Fig. 57. Distributional records of Myrmarachne hamata Wang, Mi & Peng sp. nov., Phintella liae Wang, Mi & Peng sp. nov., P. panda Huang, Wang & Peng, 2015, Toxeus fodingensis Wang, Mi & Peng sp. nov. and Yaginumaella zabkai Wang, Mi & Peng sp. nov.