Myrmarachne xingrenensis Wang, Mi & Peng 2023, sp. nov.
Creators: name: Wang, Cheng
name: Mi, Xiao-Qi
name: Wang, Wei-Hang
name: Gan, Jia-Hui
name: Irfan, Muhammad
name: Zhong, Yang
name: Peng, Xian-Jin
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Salticidae
Myrmarachne
Myrmarachne xingrenensis

description: Myrmarachne xingrenensis Wang, Mi & Peng sp. nov.
urn:lsid:zoobank.org:act: 63AE31F5-41A6-47A9-B4FB-70CD1B55970A
Figs 8–9, 56
Diagnosis
The male of Myrmarachne xingrenensis sp. nov. resembles that of M. circulus Xiao & Wang, 2004 in having a broad embolus, but it can be easily distinguished by the following: (1) the chelicera is shorter than the carapace (Fig. 9C–D) whereas longer than carapace in M. circulus (Xiao & Wang 2004: fig. 1); (2) the RTA is strongly concave medially (Fig. 8B–D), whereas not concave in M. circulus (Xiao & Wang 2004: figs 3–4). The female also resembles that of M. circulus in having a posteromedially located epigynal hood, and prominent spermathecae, but it can be distinguished by the following: (1) the epigynal hood is longer than wide (Fig. 9A), whereas wider than long in M. circulus (Xiao & Wang 2004: figs 6–7); (2) the epigyne has a pair of hood-shaped structures anterolateral to atria (Fig. 9A), whereas absent in M. circulus (Xiao & Wang 2004: figs 6–7).
Etymology
The species name is derived from the name of the type locality, Xingren County; adjective.
Type material
Holotype
CHINA • ♂; Guizhou, Xingren County, Luchuying Township, Qingshuihe Nature Reserve, Mabaoshu Grand Canyon; 25°17.79′ N, 104°56.13′ E; 1270 m a.s.l.; 3 Aug. 2016; C. Wang et al. leg.; TRU-JS 0087.
Paratypes
CHINA • 13 ♀♀, 13 ♂♂; same collection data as for holotype; TRU-JS 0088–0113.
Description
Male (holotype)
MEASUREMENTS. Total length 4.77. Carapace 2.15 long, 1.19 wide. Abdomen 2.54 long, 1.19 wide. Eye sizes and inter-distances: AME 0.39, ALE 0.22, PLE 0.20, AERW 1.22, PERW 1.26, EFL 1.01. Legs: I 5.50 (1.63, 0.78, 1.75, 0.85, 0.49), II 4.01 (1.15, 0.58, 1.08, 0.76, 0.44), III 4.54 (1.32, 0.55, 1.13, 1.05, 0.49), IV 6.54 (1.93, 0.68, 1.78, 1.59, 0.56).
HABITUS. Carapace yellow-red to dark, covered with thin setae at anterior margin (Fig. 9C). Chelicerae with six teeth on both retromargin and promargin (Fig. 9F). Sternum elongated, almost 2.2 times as long as wide. Legs yellow to red-brown, with one, five, and two pairs of ventral macrosetae on patellae, tibiae, and metatarsi I, respectively (Fig. 9D). Abdomen elongated, dorsum mahogany brown, with a pair of anterolateral white stripes, covered by big scutum; venter gray-brown, with broad, longitudinal, brown band medially (Fig. 9C–D).
PALP. Tibia slightly longer than wide; RTA almost S-shaped in ventral view and strongly concave medially, tapered to pointed tip curved towards cymbium in retrolateral view; bulb almost round, with sperm duct extended along prolateral margin and curved into S-shape terminally; embolus broad and flat, coiled with two spirals, apically reaching to antero-retrolateral margin of cymbium (Fig. 8).
Female (paratype, TRU-JS 0088)
MEASUREMENTS. Total length 5.88. Carapace 2.60 long, 1.30 wide. Abdomen 2.85 long, 1.40 wide. Eye sizes and inter-distances: AME 0.46, ALE 0.24, PLE 0.22, AERW 1.32, PERW 1.34, EFL 1.08. Legs: I 5.47 (1.63, 0.85, 1.65, 0.83, 0.51), II 4.24 (1.24, 0.65, 1.15, 0.76, 0.44), III 4.95 (1.41, 0.63, 1.20, 1.22, 0.49), IV 7.47 (2.20, 0.78, 2.15, 1.83, 0.51).
HABITUS. Similar to that of male except paler in color, and with seven cheliceral teeth on both retromargin and promargin (Fig. 9E, G).
EPIGYNE. With a pair of hood-shaped structures anterolateral to oval atria, and bell-shaped posterior hood far away from epigastric furrow about 1.6 times its length; sclerotized portions of copulatory ducts swollen at beginning and curved about 100° proximally, and then ascending to connect to posterior edges of spermathecae; spermathecae sub-spherical, touched; fertilization ducts originate from middle of inner edges of spermathecae, transversely extended (Fig. 9A–B).
Distribution
China (Guizhou) (Fig. 56).
description: Published as part of Wang, Cheng, Mi, Xiao-Qi, Wang, Wei-Hang, Gan, Jia-Hui, Irfan, Muhammad, Zhong, Yang & Peng, Xian-Jin, 2023, Notes on twenty-nine species of jumping spiders from South China (Araneae: Salticidae), pp. 1-91 in European Journal of Taxonomy 902 on pages 16-19, DOI: 10.5852/ejt.2023.902.2319, http://zenodo.org/record/10115594