Synagelides pengi, Wang & Li & Pham, 2023

Wang, Cheng, Li, Shuqiang & Pham, Dinh-Sac, 2023, Thirteen species of jumping spiders from northern Vietnam (Araneae, Salticidae), ZooKeys 1148, pp. 119-165 : 119

Synagelides pengi sp. nov.

Fig. 19

Type material.

Holotype ♀ (IZCAS-Ar44265), Vietnam: Ha Giang Province: Vi Xuyen County, Ha Giang National Forest, 14.VIII.2002, D.S. Pham leg. Paratypes 2♀ (IZCAS-Ar44266-44267), same data as holotype.

Etymology.

The species name is a patronym in honor of Prof. Xianjin Peng (Changsha, China), who has made significant contributions to the taxonomy of Chinese salticid spiders; noun (name) in genitive case.

Diagnosis.

Synagelides pengi sp. nov. resembles S. yinae Liu, Chen, Xu & Peng, 2017 in having similarity-shaped copulatory ducts and spermathecae, but it can be easily distinguished by the following: (1) the distance between hood and atrium is almost equal to the atrial length (Fig. 19A ), whereas almost equal to one-third the atrial length in S. yinae ( Liu et al. 2017: figs 7C, 8A); (2) the epigynal hood is almost triangular (Fig. 19A ), whereas almost tubiform in S. yinae ( Liu et al. 2017: figs 7C, 8A).

Description.

Female (Fig. 19 ). Total length 5.07. Carapace 2.18 long, 1.59 wide. Abdomen 2.82 long, 1.44 wide. Clypeus 0.04 high. Eye sizes and inter-distances: AME 0.47, ALE 0.29, PLE 0.28, AERW 1.46, PERW 1.62, EFL 1.18. Legs: I 5.61 (1.70, 1.50, 1.43, 0.63, 0.35), II 3.82 (1.13, 0.58, 0.93, 0.80, 0.38), III 4.00 (1.13, 0.53, 0.95, 1.01, 0.38), IV 5.45 (1.50, 0.70, 1.50, 1.35, 0.40). Carapace stippled, yellow, with pair of indistinct, pale brown patches located at anterior 1/3 of eye field, covered with pale thin setae anteriorly; fovea oval, between the PLEs. Chelicerae pale yellow, with two promarginal teeth and one retromarginal tooth. Labium colored as chelicerae, with paler inner margins bearing brown, thin setae. Endites wider than long, covered with several brown setae anteriorly. Sternum nearly shield-shaped. Legs yellow, more or less intermingled with brown, with five and two pairs of ventral spines on tibiae and metatarsi I, respectively. Abdomen elongated, dorsum yellow to brown, with pair of indistinct muscle depressions followed by pair of spots, pair of oblique lines, and several transverse, arc-shaped, pale stripes; venter pale, with pair of brown lines medially on anterior half. Epigyne (Fig. 19A, B ): longer than wide, with triangular anterior hood distant from copulatory opening; atrium oval, with pair of arc-shaped posterolateral atrial ridges, separated by a sub-square median septum; copulatory openings located posterolaterally, separated by ~ 3 × width of hood; copulatory ducts long, S-shaped, with pair of elongated, terminal accessory glands; spermathecae elongate-oval, ~ 1.5 × longer than wide, touching; fertilization ducts originate from anterior portions of spermathecae, curved 90° before extending transversely.

Male. Unknown.

Distribution.

Known only from the type locality in Ha Giang Province, Vietnam.

Comments.

According to morphological features, the species shares a similar habitus and epigyne with S. forkiforma Yang, Zhu & Song, 2007, S. hamatus Zhu, Zhang, Zhang & Chen, 2005, S. jingzhao Yang, Zhu & Song, 2007, S. latus Li, Wang & Peng, 2021, S. lushanensis Xie & Yin, 1990, S. triangulus Li, Wang & Peng, 2021, S. wuliangensis Wang, Mi, Irfan & Peng, 2020, and S. yinae Liu, Chen, Xu & Peng, 2017, and they could be assigned into an un-described group, recognized by the female having anterior epigynal hood, S-shaped copulatory ducts, oval or elongate-oval spermathecae, and the male palp with spine-shaped RTA and paliform DTA (or BTA described in Li et al. 2021). Despite the fact that the species is only known from females, we are confident in describing it as new because there is no congener known only from males among those species.

Figures

Figure 19. Synagelides pengi sp. nov., female holotype A epigyne, ventral B vulva, dorsal C habitus, dorsal D ditto, lateral E ditto, ventral F carapace, frontal G chelicera, posterior H leg I, retrolateral. Scale bars: 0.1 mm (A, B, G); 0.5 mm (C-F, H). Abbreviations: AG - accessory gland; AR - atrial ridge; CD - copulatory duct; CO - copulatory opening; FD - fertilization duct; MS - median septum; H - epigynal hood; S - spermatheca.