Irura mii, 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

Irura mii sp. nov.

Figs 2 , 3

Type material.

Holotype ♂ (IZCAS-Ar43164), China: Hainan: Wuzhishan City, Wuzhi Mountain National Nature Reserve, hillside (18°53.83'N, 109°41.88' E, ca. 1590 m), 08.iv.2009, G. Tang leg. Paratypes 3♂9♀ (IZCAS-Ar43165-43176), same data as holotype; 2♂ (IZCAS-Ar43177-43178), hillside (18°53.84'N, 109°41.51' E, ca. 1210 m), same date and collector as holotype; 4♀ (IZCAS-Ar43179-43182), hillside (18°53.85'N, 109°41.89'E, ca. 1430 m), 09.iv.2009, G. Tang leg.; 1♂1♀ (TRU-JS 0623-0624), Ledong County, Jianfengling National Nature Reserve, Peak Mountain (18°43.11'N, 108°52.32'E, ca. 1400 m), 16.iv.2019, C. Wang & Y.F. Yang leg.

Etymology.

The specific name is a patronym of Dr. Xiaoqi Mi, who greatly helped us with this research; noun (name) in genitive case.

Diagnosis.

The male of Irura mii sp. nov. can be easily distinguished from other congeners by the presence of PTA, and the distally semi-circled, filiform embolus, whereas absent, and not circled, flagelliform in others (see Metzner 2022). The female of this new species resembles I. hamatapophysis (Peng & Yin, 1991) known from Hunan of China in having the copulatory openings located at the posterior margin and the elongated junction ducts of spermathecae, but it can be easily distinguished by the copulatory ducts, which are longer and connected to the middle of the junction ducts of the spermathecae, and by the oval posterior chamber of the spermathecae (Fig. 3B ), whereas the copulatory ducts are shorter, connected to the distal portions of the junction ducts of the spermathecae, and the posterior chamber of the spermathecae are eggplant-shaped in I. hamatapophysis ( Peng and Yin 1991: fig. 1H, I).

Description.

Male (Figs 2 , 3C, D, F, G ). Total length 3.67. Carapace 1.83 long, 1.98 wide. Abdomen 1.89 long, 1.75 wide. Eye sizes and inter-distances: AME 0.45, ALE 0.26, PLE 0.21, AERW 1.61, PERW 1.86, EFL 0.92. Leg measurements: I 6.02 (1.83, 1.30, 1.38, 0.88, 0.63), II 3.22 (1.08, 0.58, 0.65, 0.58, 0.33), III 2.79 (0.93, 0.45, 0.53, 0.55, 0.33), IV 3.31 (1.10, 0.55, 0.70, 0.63, 0.33). Carapace almost oval, red-brown, setose, with pair of round, dark spots medially in eye field. Fovea indistinct. Chelicerae red-yellow, with two promarginal teeth and one retromarginal fissidental tooth. Endites longer than wide, bearing dense setae on distal portions of inner margins. Labium colored as endites. Sternum almost oval, with straight anterior margin. Legs I robust, with two pairs of macrosetae ventrally on tibiae and metatarsi, respectively; other legs pale to brown. Abdomen oval, dorsum covered entirely by large scutum, with white setae and three pairs of muscle depressions; venter dark brown medially, with brown, thin setae. Palp (Fig. 2A-C ): tibia slightly wider than long in ventral view, with sub-triangular prolateral apophysis and stout, broad RTA acutely narrowed to triangle shape distally in retrolateral view; cymbium longer than wide, with broad, irregular baso-dorsal process and spine-shaped retrolateral apophysis extending exceed dorsal process distally; bulb oval, flat, with sperm duct extending along margin; embolus slender, filiform, originating at ~ 7: 30 o’clock position of bulb, coiled into a semi-circle distally.

Female (Fig. 3A, B, E ). Total length 3.68. Carapace 1.49 long, 1.76 wide. Abdomen 2.30 long, 2.03 wide. Eye sizes and inter-distances: AME 0.41, ALE 0.20, PLE 0.17, AERW 1.39, PERW 1.69, EFL 0.81. Leg measurements: I 4.70 (1.63, 1.03, 1.03, 0.68, 0.33), II 3.10 (1.03, 0.58, 0.63, 0.53, 0.33), III 2.70 (0.90, 0.45, 0.50, 0.55, 0.30), IV 3.32 (1.13, 0.53, 0.68, 0.65, 0.33). Habitus (Fig. 3E ) similar to that of male except with several herringbone-shaped stripes posteriorly and lacks a scutum on the dorsum of abdomen. Epigyne (Fig. 3A, B ): wider than long; copulatory openings located at posterior margin, almost round, separated from each other by> 2 × the width of posterior chamber of spermathecae; copulatory ducts long, twisted, connected to the middle of junction ducts of spermathecae; spermathecae divided into two oval chambers; fertilization ducts lamellar, originate from anterior parts of posterior chamber of spermathecae.

Distribution.

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

Figures

Figure 2. Male palp of Irura mii sp. nov., holotype A ventral B retrolateral C dorsal. Scale bars: 0.1 mm. Abbreviations: CA - cymbial apophysis; DCP - dorsal cymbial process; E - embolus; PTA - prolateral tibial apophysis; RTA - retrolateral tibial apophysis.

Figure 3. Irura mii sp. nov., male holotype and female paratype A epigyne, ventral B vulva, dorsal C holotype habitus, dorsal D ditto, ventral E female paratype habitus, dorsal F holotype carapace, frontal G holotype chelicera, posterior. Scale bars: 0.1 mm (A, B, G); 0.5 mm (C-F). Abbreviations: AS - anterior chamber of spermatheca; CD - copulatory duct; CO - copulatory opening; FD - fertilization duct; JS - junction duct of spermathecae; PS - posterior chamber of spermatheca.