Marengo zhengi, 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

Marengo zhengi sp. nov.

Figs 8 , 9

Type material.

Holotype ♂ (IZCAS-Ar43186), China: Hainan: Lingshui County, Diaoluoshan National Nature Reserve, mountain near the river (18°43.39'N, 109°51.27'E, ca. 930 m), 10.viii.2010, G. Zheng leg. Paratypes 3♂2♀ (IZCAS-Ar43187-43191), same data as holotype; 2♂ (IZCAS-Ar43192-43193), around the Plank Road (18°43.56'N, 109°51.99'E, ca. 950 m), 08.viii.2010, G. Zheng leg.; 1♂ (IZCAS-Ar43194), around the Plank Road (18°43.67'N, 109°51.83'E, ca. 990 m), 09.viii.2010, G. Zheng leg.; 1♀ (IZCAS-Ar43195), around the Plank road near the waterfall (18°43.44'N, 109°52.60'E, ca. 500 m), 10.viii.2010, G. Zheng leg.

Etymology.

The specific name is a patronym of Prof. Guo Zheng, the collector of the new species; noun (name) in genitive case.

Diagnosis.

Marengo zhengi sp. nov. closely resembles M. deelemanae Benjamin, 2004 known from Prachuap Khiri Khan of Thailand in having a similar habitus and copulatory organs, but it differs in the following characters: (1) the embolus is lamellar distally (Fig. 8B, C, D ), whereas it is bar-shaped in M. deelemanae ( Benjamin 2004: fig. 68E, F); (2) the RTA is almost uniform in width (Fig. 8B ), whereas it is acutely narrowed medially in M. deelemanae ( Benjamin 2004: fig. 68E); (3) the copulatory ducts are extending exceed the copulatory openings proximally (Fig. 9C ), whereas not exceed the copulatory openings in M. deelemanae ( Benjamin 2004: fig. 68D).

Description.

Male (Figs 8 , 9D-F, H, I ). Total length 2.60. Carapace 1.34 long, 0.96 wide. Abdomen 1.32 long, 0.84 wide. Eye sizes and inter-distances: AME 0.28, ALE 0.10, PLE 0.12, AERW 0.71, PERW 0.75, EFL 0.48. Leg measurements: I 3.14 (0.88, 0.50, 0.83, 0.68, 0.25), II 1.81 (0.58, 0.30, 0.40, 0.33, 0.20), III 1.71 (0.53, 0.25, 0.35, 0.38, 0.20), IV 2.11 (0.68, 0.33, 0.50, 0.40, 0.20). Carapace elongate-oval, red-yellow, with a pair of dark dots on eye field and seven clusters of white patches of scales on thorax, covered with small papillae and thin setae. Chelicerae dark yellow, with two promarginal and four retromarginal teeth. Endites colored as chelicerae, with dense, dark setae anteriorly. Labium darker than endites, almost linguiform. Sternum almost oval. Legs yellow to red-yellow; leg I robust, with enlarged tibia with dense, leaf-like scales, and three pairs of macrosetae ventrally; other legs pale to brown. Abdomen elongate-oval, dorsum yellow to dark brown, with pair of small, round, white spots of scales at anterolateral margin, a broad, longitudinal, brown band followed by irregular yellow patch, and pair of round, white patches mediolaterally, entirely covered by large scutum; venter pale to brown. Palp (Fig. 8A-D ): tibia short, with straight RTA of nearly uniform width, slightly shorter than its length, and blunt apically in retrolateral view; bulb bugling; embolus coiled ~3 ×, tapered, lamellar distally.

Female (Fig. 9A-C, G ). Total length 2.73. Carapace 1.23 long, 0.87 wide. Abdomen 1.40 long, 0.92 wide. Eye sizes and inter-distances: AME 0.29, ALE 0.10, PLE 0.12, AERW 0.70, PERW 0.77, EFL 0.48. Leg measurements: I 2.14 (0.65, 0.33, 0.53, 0.40, 0.23), II 1.61 (0.50, 0.25, 0.33, 0.30, 0.23), III 1.59 (0.45, 0.23, 0.30, 0.38, 0.23), IV 1.96 (0.63, 0.25, 0.45, 0.40, 0.23). Habitus (Fig. 9G ) similar to that of male except pale, with unmodified tibia I lacking leaf-like scales and replaced with several long setae ventrally. Epigyne (Fig. 9A-C ): atria paired, anteriorly located, ~ 1.5 × longer than wide, separated by narrow septum; copulatory openings beneath posterior edges of atria; copulatory ducts long, widened proximally, forming complicated coils; spermathecae sub-oval; fertilization ducts elongated, lamellar.

Distribution.

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

Figures

Figure 8. Male palp of Marengo zhengi sp. nov., holotype and paratype A holotype palp, prolateral B ditto, retrolateral C ditto, ventral D paratype bulb, retrolateral. Scale bars: 0.1 mm. Abbreviations: E - embolus; EC - embolic coil; RTA - retrolateral tibial apophysis.

Figure 9. Marengo zhengi sp. nov., male holotype and female paratype A, B epigyne, ventral C vulva, dorsal D holotype habitus, dorsal E ditto, lateral F ditto, ventral G female paratype habitus, dorsal H holotype carapace, frontal I holotype leg I, retrolateral. Scale bars: 0.1 mm (A-C); 0.2 mm (H, I); 0.5 mm (D-G). Abbreviations: At - atrium; CD - copulatory duct; FD - fertilization duct; MS - median septum; S - spermatheca.