Marengo tangi, Wang & Li, 2021

Wang, Cheng & Li, Shuqiang, 2021, On ten species of jumping spiders from Xishuangbanna, China (Araneae, Salticidae), ZooKeys 1062, pp. 123-155 : 123

Marengo tangi sp. nov.

Figs 6 , 7

Type materials.

Holotype ♂ (IZCAS-Ar42584), China: Yunnan: Xishuangbanna, Mengla County, Menglun Town, XTBG, Tropical evergreen rainforest (21°56.21'N, 101°16.20'E, ca. 560 m), 1.xii.2009, G. Tang leg. Paratypes 12♂ (IZCAS-Ar42585-42596), same date as holotype; 2♀ (IZCAS-Ar42597-42598), site #1 of garbage dump off G213 roadside (21°54.28'N, 101°16.75'E, ca. 630 m), 25.iv.2019, Z. Bai leg.

Etymology.

The species name is a patronym in honor of Dr. Guo Tang, one of the collectors of the new species; noun (name) in genitive case.

Diagnosis.

The male of Marengo tangi sp. nov. closely resembles that of M. batheryensis Sudhin, Nafin, Benjamin & Sudhikumar, 2019 by the similar abdominal markings and retrolateral tibial apophysis but differs by the following: 1) the process of the embolic disc is conspicuous in retrolateral view (Fig. 6B, D ) vs. indistinct in M. batheryensis ( Sudhin et al. 2019: figs 29, 41); 2) the tibiae I are about 2.3 × longer than wide (Fig. 7H ) vs. about 1.6 × in M. batheryensis ( Sudhin et al. 2019: figs 37, 38); 3) the scutum only covers the dorsal half of the abdomen in lateral view (Fig. 7D ) vs. nearly covers the entire abdomen in M. batheryensis ( Sudhin et al. 2019: fig. 35). The female is similar to M. striatipes Simon, 1900 by having a similarly-shaped habitus and elongate-oval atrium, but it can be distinguished by having a pair of lateral epigynal plates, and by the atrium about 2 times longer than wide (Fig. 7A, B ), vs. absent, about 1.5 times longer than wide in M. striatipes (Benjamin, 2004: 67B, C).

Description.

Male (Figs 6 , 7C, D, F-H ). Total length 2.82. Carapace 1.27 long, 0.99 wide. Abdomen 1.43 long, 0.89 wide. Clypeus 0.07 high. Eye sizes and inter-distances: AME 0.32, ALE 0.13, PLE 0.11, AERW 0.79, PERW 0.80, EFL 0.55. Legs: I 3.44 (1.08, 1.10, 0.88, 0.38), II 2.08 (0.63, 0.75, 0.40, 0.30), III 1.98 (0.60, 0.68, 0.40, 0.30), IV 2.45 (0.75, 0.90, 0.50, 0.30). Carapace red-brown, with 2 clusters of white setae behind PLEs, 2 others posterolaterally on thoracic part, covered with tubercles and brown, thin setae. Fovea and radial groove indistinct. Chelicerae yellow, with 3 teeth on both the retromargin and promargin. Endites yellow. Labium darker than endites. Sternum sub-oval. Legs I robust, with inflated tibiae bearing dense ventral scales and 3 pairs of ventral spines; legs III and IV pale, with dark brown stripes prolaterally on femora, patellae and tibiae. Abdomen sub-oval, dorsum brown anteromedially, red-brown medio-posteriorly, with an irregular, transverse, yellow band bearing sparse, white lateral setae, covered entirely by a large scutum; venter dark brown posterolaterally.

Palp (Fig. 6A-D ): femur about 2.5 times longer than wide; tibia almost as long as wide, with a thin, bar-shaped retrolateral apophysis slightly curved medially, blunt at tip; cymbium almost 2 times longer than wide in ventral view; bulb swollen; embolus fully coiled 2 times; process of embolic disc strongly curved medially, slightly pointed apically in retrolateral view.

Female (Fig. 7A, B, E ). Total length 2.76. Carapace 1.26 long, 0.90 wide. Abdomen 1.40 long, 0.99 wide. Clypeus 0.06 high. Eye sizes and inter-distances: AME 0.31, ALE 0.12, PLE 0.11, AERW 0.75, PERW 0.79, EFL 0.57. Legs: I 2.04 (0.63, 0.78, 0.38, 0.25), II 1.63 (0.50, 0.60, 0.28, 0.25), III 1.56 (0.53, 0.53, 0.25, 0.25), IV 2.03 (0.65, 0.75, 0.38, 0.25). Habitus similar to that of male except darker and with less-developed legs I.

Epigyne (Fig. 7A, B ): longer than wide, with a pair of lateral plates (described as stiffener in Azarkina and Haddad 2020) near the copulatory ducts; atrium elongate-oval, about 2 times longer than wide and separated by a narrow septum; copulatory openings almost C-shaped, medially located; copulatory ducts expanded proximally, then curved posteriorly into convoluted coils; spermathecae small, elongate-oval; fertilization ducts anterior to spermathecae, extending anterolaterally.

Distribution.

Known only from the type locality in Yunnan, China.

Comments.

Although not collected together, the male and female are considered to be conspecific because they share a very similar habitus.

Figures

Figure 6. male palp of Marengo tangi sp. nov., holotype A prolateral B retrolateral C ventral D bulb, retrolateral. Scale bars: 0.1.

Figure 7. Female paratype and male holotype of Marengo tangi sp. nov. A epigyne, ventral B vulva, dorsal C holotype habitus, dorsal D lateral E female paratype habitus, dorsal F holotype carapace, frontal G holotype left chelicera, posterior H holotype leg I, prolateral. Scale bars: 0.1 (A, B, G); 0. 5 (C-E, H); 0.2 (F).