Pengmarengo yangi, Wang & Li, 2022

Wang, Cheng & Li, Shuqiang, 2022, A new genus and nine species of jumping spiders from Hainan Island, China (Araneae, Salticidae), ZooKeys 1118, pp. 39-72 : 39

Pengmarengo yangi sp. nov.

Figs 12 , 13 , 14

Type material.

Holotype ♂ (TRU-JS 0636), China: Hainan: Ledong County, Jianfeng Township, Jianfengling National Nature Reserve, Main Peak (18°43.11'N, 108°52.32'E, ca. 1400 m), 16.v.2019, C. Wang & Y.F. Yang leg. Paratypes 2♂3♀ (TRU-JS 0637-0641), same data as holotype.

Etymology.

The specific name is a patronym of Mr. Yuanfa Yang, one of the collectors of the type specimens; noun (name) in genitive case.

Diagnosis.

The male of Pengmarengo yangi sp. nov. resembles P. yui (Wang & Li, 2020) comb. nov. known from Yunnan of China by the habitus, but it can be easily distinguished by the lamellar process of the embolic disc and the flat embolus has spine-shaped distal processes (Figs 12B-D , 14B ), whereas lacks the process of embolic disc and with bar-shaped embolus lacks process in P. yui ( Wang and Li 2020: figs 5B-D, 6A, B). The female can be easily distinguished from other congeners by the prominent, L-shaped spermathecae, whereas in P. chelifer and P. elongata they are U-shaped or elongated ( Benjamin 2004: fig. 26C; Peng 2020: fig. 344c).

Description.

Male (Figs 12 , 14A-C, E-G ). Total length 3.07. Carapace 1.36 long, 0.82 wide. Abdomen 1.72 long, 0.64 wide. Eye sizes and inter-distances: AME 0.28, ALE 0.12, PLE 0.11, AERW 0.75, PERW 0.78, EFL 0.51. Leg measurements: I 3.08 (0.80, 0.45, 0.93, 0.70, 0.20), II 1.68 (0.50, 0.25, 0.38, 0.33, 0.20), III 1.55 (0.43, 0.23, 0.33, 0.33, 0.23), IV 2.01 (0.60, 0.28, 0.50, 0.40, 0.23). Carapace red-brown to dark brown, with two clusters of white setae near PLEs and two posteriorly, covered with small papillae and thin setae. Chelicerae with two promarginal teeth and three retromarginal teeth fused basally. Legs I robust, with enlarged tibiae with dense, ventral, leaf-like scales, two prolatero-ventral and three retrolatero-ventral tibial macrosetae and two pairs of ventral metatarsal macrosetae, respectively; remaining legs yellow to pale yellow, with brown stripes on femora. Abdomen elongated, slightly constricted at anterior 1/3, dorsum brown to dark brown, with pair of oval white patches of setae on lateral margins behind constriction, entirely covered by large scutum and thin setae; venter dark brown. Palp (Fig. 12A-D ): tibia wider than long; RTA ~ 1.6 × longer than tibia, slightly curved distally to a blunt tip; bulb swollen, divided by pale, oblique cleft; embolus short, coiled ca. a circle, pointed apically, with spine-shaped processes distally; process of embolic disc lamellar, membranous, with two parts.

Female (Figs 13 , 14D ). Total length 3.67. Carapace 1.33 long, 0.80 wide. Abdomen 2.02 long, 0.84 wide. Eye sizes and inter-distances: AME 0.29, ALE 0.11, PLE 0.11, AERW 0.75, PERW 0.78, EFL 0.51. Leg measurements: I 2.39 (0.63, 0.35, 0.70, 0.53, 0.18), II 1.59 (0.50, 0.25, 0.38, 0.28, 0.18), III 1.53 (0.45, 0.23, 0.35, 0.30, 0.20), IV 2.01 (0.63, 0.28, 0.50, 0.40, 0.20). Habitus (Fig. 14D ) similar to that of male except lacks abdominal scutum, constriction, but with sub-trapeziform scutum near anterior margin. Epigyne (Fig. 13A-D ): longer than wide, with pair of round atria anteriorly; copulatory openings beneath the posterior margins of atria; copulatory ducts long, posterolaterally extending before reversing direction at proximal 2/3, and followed by the S-shaped thinner portions connected to anterolateral edges of spermathecae; spermathecae L-shaped, touching; fertilization ducts originate from the center of longitudinal extended parts of spermathecae, extending anterolaterally.

Distribution.

Only known from the type locality on Hainan Island, China.

Figures

Figure 12. Male palp of Pengmarengo yangi sp. nov., holotype A prolateral B retrolateral C ventral D bulb, ventral. Scale bars: 0.1 mm. Abbreviations: E - embolus; PED - process of embolic disc; RTA - retrolateral tibial apophysis.

Figure 13. Epigyne-vulva of Pengmarengo yangi sp. nov., female paratype A, C epigyne, ventral B, D vulva, dorsal. Scale bars: 0.1 mm. Abbreviations: At - atrium; CD - copulatory duct; FD - fertilization duct; S - spermatheca.

Figure 14. Pengmarengo yangi sp. nov., male holotype and female paratype A holotype habitus, dorsal B ditto, lateral C ditto, ventral D female paratype habitus, dorsal E holotype carapace, frontal F holotype chelicera, posterior G holotype leg I, prolateral. Scale bars: 0.1 mm (F); 0.2 mm (E, G); 0.5 mm (A-D).