Spiralembolus yui, Wang & Li, 2023

Wang, Cheng & Li, Shuqiang, 2023, Notes on twelve species of jumping spiders from Hainan Island, China (Araneae, Salticidae), ZooKeys 1167, pp. 159-197 : 159

Spiralembolus yui sp. nov.

Figs 21 , 22

Type material.

Holotype ♂ (IZCAS-Ar44569), China: Hainan: Ledong County, Jianfengling National Nature Reserve, Wufenqu (18°44.03′N, 108°55.46′E, ca. 960 m), 15.viii.2010, G. Zheng leg. Paratypes 1♂2♀ (IZCAS-Ar44570-44572), same data as holotype; 4♂2♀ (IZCAS-Ar44573-44578), Wuzhishan City, Wuzhishan National Nature Reserve, Direction of Yunding (18°54.42′N, 109°40.65′E, ca. 1140 m), 27.iv.2011, Y.Y. Zhou leg.

Etymology.

The specific name is after Mr. Yu Li (937-978), one of the famous ancient Chinese poets and one sorrowful ancient Chinese Emperor; noun (name) in genitive case.

Diagnosis.

Spiralembolus yui sp. nov. closely resembles that of S. yinggeling sp. nov., but it can be distinguished by the following: (1) the embolus is spiralled into more than four coils (Fig. 21B ), vs. less than three coils in S. yinggeling (Fig. 19B ); (2) the RTA is acutely narrowed postero-medially in retrolateral view (Fig. 21C ), vs. tapered in S. yinggeling (Fig. 19C ); (3) the copulatory ducts are ~ 1/4 the spermathecal width and connected to the antero-inner portions of spermathecae (Fig. 22B ), vs. ~ half the spermathecal width, and connected to the postero-inner portions of spermathecae in S. yinggeling (Fig. 20B ).

Description.

Male (Figs 21 , 22D, E, G, H ). Total length 2.83. Carapace 1.56 long, 1.17 wide. Abdomen 1.31 long, 0.98 wide. Clypeus 0.09 high. Eye sizes and inter-distances: AME 0.39, ALE 0.23, PLE 0.20, AERW 1.19, PERW 1.10, EFL 0.75. Legs: I 3.13 (0.95, 0.55, 0.78. 0.45, 0.40), II 2.66 (0.83, 0.43, 0.60, 0.45, 0.35), III 3.11 (1.00, 0.45, 0.68, 0.60, 0.38), IV 3.39 (1.08, 0.50, 0.73, 0.70, 0.38). Carapace red brown except the lateral of the eye field black, covered with dense white setae on clypeus and with oblique, dark stripes on the sloped thorax; fovea longitudinal, dark, linear. Chelicerae yellow to yellow-brown, each with two promarginal teeth and one retromarginal tooth. Endites widened medio-posteriorly, bearing brown setae on the pale distal half of inner margins. Labium tapered, with several dark brown setae at distal portion. Sternum yellow-brown, ~ 1.5 × longer than wide, with straight anterior margin, covered with sparse dark setae of various lengths. Legs yellow to dark brown, with clusters of white setae on femora and tibiae. Abdomen oval, dorsum covered with dense white, short setae and sparse brown setae, with anteromedian scutum ~ half the abdomen width and length, and four transverse pale stripes posteriorly; venter pale to brown, covered with brown setae. Palp (Figs 21A-C , 22E ). Tibia wider than long; RTA lamellar baso-medially, the remainder acutely narrowed and curved ventrally, and with rather pointed tip; cymbium longer than wide, covered with dense white setae on dorsum of the proximal half; bulb elongate-oval, swollen; sperm duct strongly curved retrolaterally; embolus originates from the antero-prolateral portion of bulb, spiralled into more than four coils, with pointed tip.

Female (Fig. 22A-C, F ). Total length 2.85. Carapace 1.57 long, 1.15 wide. Abdomen 1.45 long, 1.06 wide. Clypeus 0.09 high. Eye sizes and inter-distances: AME 0.38, ALE 0.23, PLE 0.21, AERW 1.21, PERW 1.13, EFL 0.74. Legs: I 2.66 (0.80, 0.48, 0.63, 0.40, 0.35), II 2.35 (0.75, 0.40, 0.55, 0.35, 0.30), III 2.74 (0.83, 0.43, 0.60, 0.53, 0.35), IV 3.14 (0.93, 0.40, 0.73, 0.70, 0.38). Habitus (Fig. 22F ) similar to that of male except paler, without the dense white setae on clypeus and the dorsal scutum on abdomen. Epigyne (Fig. 22A-C ). Almost as long as wide; copulatory openings oval, medially located, separated from each other ca. their width; copulatory ducts short, connected to the antero-inner portions of spermathecae; spermathecae oval, touched; fertilization ducts lamellar, transverse extending.

Distribution.

Known only from the type locality in Hainan Island, China.

Figures

Figure 19. Male palp of Spiralembolus yinggeling sp. nov., holotype A prolateral B ventral C retrolateral. Scale bars: 0.1 mm.

Figure 20. Spiralembolus yinggeling sp. nov., male holotype and female paratype A epigyne, ventral B vulva, dorsal C vulva, anterodorsal D holotype habitus, dorsal E ditto, ventral F female paratype habitus, dorsal G holotype carapace, frontal H holotype chelicera, posterior. Scale bars: 0.1 mm (A-C, H); 0.5 mm (D-G).

Figure 21. Male palp of Spiralembolus yui sp. nov., holotype A prolateral B ventral C retrolateral. Scale bars: 0.1 mm.

Figure 22. Spiralembolus yui sp. nov., male holotype and female paratype A epigyne, ventral B vulva, dorsal C vulva, anterodorsal D holotype habitus, dorsal E ditto, ventral F female paratype habitus, dorsal G holotype carapace, frontal H holotype chelicera, posterior. Scale bars: 0.1 mm (A-C, H); 0.5 mm (D-G).