Yuelushannus barbatus sp. nov.

urn:lsid:zoobank.org:act: 1BE73953-9370-49F4-B90F-2F2F9E5DB15A

Figs 6–11

Etymology

The species name comes from Latin adjective “ barbatus ” meaning “frayed” referring to the frayed or brush-like distal end of the anterior radical process in the male palp.

Diagnosis

This new species resembles Yuelushannus alatus sp. nov., as two-thirds of the male abdomen anteriorly has a very distinct scutum; cephalic lobe and pits distinct; both male and female abdomen with four sigillae. Tibial apophyses densely covered with teeth, paracymbium hook-shaped. Epigyne with columnshaped copulatory ducts (Figs 3–4, 8–9). It can be distinguished by:

General: In male, ocular region with thick spines in Y. barbatus sp. nov. (Fig. 5 E–G), wing-like spines which cover most of PMEs in Y. alatus sp. nov. (Fig. 10 A–B).

Male: Tibial apophyses long, almost touch proximal part of cymbium in Y. barbatus sp. nov. (Figs 1B, 2B), whereas the short, distal end does not touch the cymbium in Y. alatus sp. nov. (Figs 6B, 7B). Protegulum long, extends above the distal suprategular apophysis in Y. barbatus sp. nov. (Figs 1B, 2B), whereas it is short and below the distal suprategular apophysis in Y. alatus sp. nov. (Figs 6B, 7B). Distal suprategular apophysis short, tip not bifurcated (Figs 1 A–B, 2), long, with bifurcated tip, extending above apex of cymbium in Y. alatus sp. nov. (Figs 6 A–B, 7). Distal end of anterior radical process frayed in Y. barbatus sp. nov. (Figs 1 A–B, 2), not frayed in Y. alatus sp. nov. (Figs 6 A–B, 7).

Female: Spermathecae globular in Y. barbatus sp. nov. (Figs 3–4), kidney-shaped in Y. alatus sp. nov. (Figs 8–9).

Holotype CHINA • ♂; Hunan Province, Changsha City, Yuelu District, Yuelu Mountain; 28.19275° N, 112.9382° E; 1 Mar. 2017; alt. 208 m; Zhou Gu-chun leg.; HNU-YLS–17–0301~01.

Paratypes CHINA – Hunan Province • 1 ♂, 10 ♀♀; same collection data as for holotype; HNU-YLS–17–0301 • 8 ♀♀; Changsha City, Yuelu District, Yuelu Mountain; 28.18475°N, 112.93112°E; 8 Dec. 2016; alt. 280 m; Zhou Gu-chun leg.; HNU-YLS–16–1211 • 54 ♂♂, 60 ♀♀; Ningxiang City, Huaminglou Town, Jinyuan Village; 28.1002° N, 112.5277° E; 24 Oct. 2017; alt. 187 m; Zhou Gu-chun leg.; HNU–HN–IV–1755 • 1 ♀; Ningxiang City, Huaminglou Town, Shili Village; 28.09035° N, 112.6670° E; 9 May 2017; alt. 163 m; Zhou Gu-chun, Tian Tian and Huang Zong-guang leg.; HNU–HN–IV–1704 • 2 ♂♂; Ningxiang City, Huaminglou Town, Jinyuan Village; 28.10046° N, 112.66057° E; 12 May 2017; alt. 209 m; Zhou Guchun, Tian Tian and Huang Zongguang leg.; HNU–HN–IV–1779 • 14 ♀♀; Ningxiang County, Huaminglou Town, Yanglin Village; 28.10020° N, 112.65881° E; 10 May 2017; alt. 189 m; Zhou Guchun, Tian Tian and Huang Zong-guang leg.; HNU–HN–IV–1707 • 1 ♀; Ningxiang City, Huaminglou Town, Shili Viollage; 28.08727° N, 112.67114° E; 9 May 2017; alt. 125 m; Zhou Guchun, Tian Tian and Huang Zongguang leg.; HNU–HN–IV–1703 • 6 ♂♂, 3 ♀♀; Huaihua City, Huitong County, Tuanhe Town, Diaotang Village, Yingzuijie National Nature Reserve; 26.90186° N, 109.93529° E; alt. 390 m; Zhou Guchun, Tian Tian and Li Dengqin leg.; HNU–HN–IV–1767 • 1 ♂, 1 ♀; Huaihua City, Huitong County, Tuanhe Town, Xiangyan Village, Yingzuijie National Nature Reserve; 26.83700° N, 109.88804° E; 28 Oct. 2017; alt. 684 m; Zhou Guchun leg.; HNU–HN–IV–1764 . – Hubei Province • 2 ♂♂; Badong County, Yanduhe Town, Songziyuan Village; 31.3406° N, 110.4131° E; 26 Apr. 2016; alt. 1320 m; Liu Wang, Tian Tian and Ceng Chen leg.; HNU-HB-20160426 .

Description

Male (holotype, HNU-YLS–17–0301~01)

BODY. Total length 1.89. Carapace 0.88 long, 0.75 wide, brown, cephalic lobe 0.23 high, with distinct pits, ocular region with thick spines pointing away from each other (Fig. 10 A–B), fovea, cervical and radial grooves distinct (Fig. 10 A–B). Clypeus 0.28 high. Sternum wider than long, yellowish, with spine-like hairs; labium wider than long; maxillae long, distal end broader, with scopulae (Fig. 10C). Chelicerae with five promarginal and six retromarginal teeth. Ocular region narrow, AER straight, PER procurved, PME present on cephalic lobe. Eye sizes and interdistances: AME 0.05; ALE 0.08; PME 0.06; PLE 0.07; AME–AME 0.03; PME–PME 0.06; AME–ALE 0.03; PME–PLE 0.06; AME–PME 0.09; ALE–ALE 0.28; PLE–PLE 0.31; ALE–PLE contiguous. Length of legs: I, 2.4 (0.68, 0.84, 0.53, 0.35); II, 2.12 (0.62, 0.72, 0.46, 0.32); III, 1.81 (0.52, 0.61, 0.41, 0.27); IV, 2.46 (0.71, 0.87, 0.56, 0.32). Leg formula IV–I–II–III. TmI 0.24 and TmIV 0.18. Tibial spine formula: 1–1–1–1. Abdomen 1.12 long, 0.77 wide, round, anterior two-thirds of abdomen with distinct scutum and two pairs of sigillae, lateral sides dusky grey, ventral side pale (Fig. 10 A–C).

PALP (Figs 6–7). Patella as long as tibia; tibia with a retrolateral and a dorsal trichobothrium, posterior margin with 5 spines in a row in retrolateral view, dorsally with two tongue-shaped apophyses densely covered with teeth, distal end almost touches cymbium; paracymbium U-shaped, distal arm with slightly curved tip; tegulum possess long transparent protegulum with broad distal end, extending above distal suprategular apophysis; distal suprategular apophysis sclerotized, slightly curved, with blunt distal end. Embolic division: tail piece long, slightly overlapping suprategulum; embolic membrane transparent, distal end broad; anterior radical process sclerotized, black, as long as embolus, distal end frayed or brush-like; embolus sclerotized, black, thick, distally curved, with blunt tip.

Female (allotype, HNU-YLS–16–1211)

BODY. Total length 2.19. Carapace 0.99 long, 0.80 wide, brown, with cephalic region slightly elevated; fovea, cervical and radial grooves distinct (Fig. 10 D–E). Clypeus 0.29 high. Sternum wider than long, yellowish with spine-like hairs; labium wider than long; maxillae long, distal end broader, with scopulae (Fig. 10F). Chelicerae with five promarginal and six retromarginal teeth. Ocular region narrow, AER recurved, PER procurved, PER slightly wider. Eye sizes and interdistances: AME 0.06; ALE 0.09; PME 0.08; PLE 0.09; AME–AME 0.03; PME–PME 0.07; AME–ALE 0.02; PME–PLE 0.06; AME–PME 0.06; ALE–ALE 0.31; PLE–PLE 0.34; ALE–PLE contiguous. Length of legs: I, 2.49 (0.73, 0.85, 0.55, 0.36); II, 2.12 (0.67, 0.65, 0.48, 0.32); III, 1.88 (0.58, 0.63, 0.39, 0.28); IV, 2.67 (0.81, 0.96, 0.56, 0.34). Leg formula IV–I–II–III. TmI 0.21 and TmIV 0.16. Tibial spine formula: 1–1–1–1. Abdomen 1.28 long, 0.95 wide, round, grey with four sigillae, lateral sides dusky grey, ventral side grey (Fig. 10D, F).

EPIGYNE (Figs 8–9). Ventral plate sclerotized, concave, covered with thick spines; posterior margin of dorsal plate with round scapus; copulatory openings present between dorsal and ventral plate; copulatory ducts long, column-shaped; spermathecae globular, separated by a distance of ¾ of their diameter; fertilization ducts small, extending mesally.

Distribution

China (Hubei, Hunan, Fig. 11).