Indomarengo wengnan, Wang & Li, 2022

Wang, Cheng & Li, Shuqiang, 2022, On eleven species of jumping spiders from Xishuangbanna, China (Araneae, Salticidae), ZooKeys 1116, pp. 85-119 : 85

Indomarengo wengnan sp. nov.

Fig. 10

Type material.

Holotype ♀ (IZCAS-Ar42935), China: Yunnan: Xishuangbanna, Jinghong City, Meng’a Township, Wengnan Village, secondary forest (22°05.00'N, 100°22.22'E, 1137 ± 12 m alt.), 25.xii.2012, Q. Zhao and Z. Chen leg.

Etymology.

The specific name is derived from the name of the type locality and is a noun in apposition.

Diagnosis.

Indomarengo wengnan sp. nov. resembles that of I. yui Wang & Li, 2020 from China in having a similar habitus and L-shaped spermathecae, but it can be easily distinguished by the following: 1) atria separated from each other by more than their width (Fig. 10A-D ) versus almost touching in I. yui (Fig. 11A-C ); 2) copulatory ducts not coiled (Fig. 10A-D ) versus distally coiled in I. yui (Fig. 11A-C ). The species is also similar to Tauala elongatus Peng & Li, 2002 from China in the general habitus and the paired, separated atria, but it differs by the absence of accessory glands of the copulatory ducts and L-shaped spermathecae (Fig. 10A-D ), whereas in T. elongatus the glands of the copulatory ducts are present and the spermathecae are tube-shaped ( Peng and Li 2002: fig. 20).

Description.

Female (Fig. 10A-J ). Total length 3.55. Carapace 1.38 long, 0.79 wide. Abdomen 2.03 long, 0.82 wide. Clypeus almost invisible. Eye sizes and inter-distances: AME 0.29, ALE 0.13, PLE 0.11, AERW 0.73, PERW 0.77, EFL 0.51. Legs: I 2.66 (0.70, 1.13, 0.63, 0.20), II 1.68 (0.50, 0.63, 0.35, 0.20), III 1.59 (0.48, 0.53, 0.38, 0.20), IV 2.23 (0.68, 0.85, 0.50, 0.20). Carapace flat, covered with thin setae anteromedially, bearing four clusters of white scales with two posterolateral to AMEs and two posterolaterally located on thorax. Chelicerae with two promarginal and three retromarginal teeth. Endites longer than wide, pale the ental sides. labium dark. Sternum elongated, almost fusiform. Legs I strongest, with enlarged tibia bearing cluster of leaf-like scales and five spines ventrally, others pale, with dark brown stripes laterally on femora and tibia. Abdomen elongated, dorsum brown to dark brown, with subtrapezoid sclerite near anterior margin and pair of indistinct white patches of setae laterally on anterior 1/3; venter gray-brown, without distinct markings.

Epigyne (Fig. 10A-D ): longer than wide; atria paired, almost round, separated from each other by more than their diameter, with pair of semicircular anterolateral atrial ridges; copulatory ducts flat, broad, extending posteriorly along longitudinal axis at anterior half, before contrary extending and leading to the slender parts that slightly curved medially and connected to lateral part of spermathecae; spermathecae prominent, L-shaped, with hemispherical processes at anterior margins; fertilization ducts originating from middle of longitudinally extending portions of spermathecae.

Male. Unknown.

Distribution.

Known only from the type locality in Yunnan, China.

Comments.

According to the morphological characters, the new species and I. yui are similar to I. thomsoni (Wanless, 1978) and Philates chelifer (Simon, 1900) in having an elongated, flat body, a specific form of the copulatory ducts, and prominent spermathecae, which are absent in the type species of Indomarengo and Philates Simon, 1900, but both may not monophyletic and need further revision. We provisionally place our two species in Indomarengo .

Figures

Figure 10. Indomarengo wengnan sp. nov., female holotype A, C epigyne, ventral B, D vulva, dorsal E habitus, dorsal F ditto, lateral G ditto, ventral H carapace, frontal I chelicera, posterior J leg I, prolateral. Scale bars: 0.1 (A-D, G); 0.5 (E-G); 0.2 (H, J).

Figure 11. Indomarengo yui A, B epigyne, ventral C vulva, dorsal D male habitus, dorsal E female habitus, dorsal F ditto, lateral G ditto, ventral. Scale bars: 0.1 (A-C); 0.5 (D-G).