Fluctus tengchongensis Jin & Zhang 2020, sp. nov.
Creators: name: Jin, Chi
name: Zhang, Feng
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Corinnidae
Fluctus
Fluctus tengchongensis

description: Fluctus tengchongensis sp. nov. (OiỚdzdzH)
Figs 1C, 5–7
Type material. Holotype: ♂, CHINA: Yunnan Province, Tengchong City, Shangying township, Daditian, around 192 County Road (25°01.089′N, 98°41.258′E), 1479 m a.s.l., 10 June 2017, leg. Chi Jin, Beibei Zhou and Xiao Zang. Paratypes: 2♀, same data as holotype.
Etymology. The specific name is derived from the type locality; adjective.
Diagnosis. The new species resembles F. bannaensis sp. nov.; for detailed diagnosis see above.
Description. Male (Figs 1C, 5 A–D, 6A–D, 7A–C). Holotype: body 7.29 long; carapace 3.93 long, 2.83 wide, width/length= 0.72; abdomen 4.20 long, 2.41 wide. Diameters of eyes: AME 0.18, ALE 0.15, PME 0.16, PLE 0.16. Eye interdistances: AME–AME 0.12, AME–ALE 0.01, ALE–ALE 0.45, PME–PME 0.19, PME–PLE 0.08, PLE–PLE 0.62, ALE–PLE 0.03. OAW 0.83, CRW 1.37, OAW/CRW= 0.61. CRW/carapace width= 0.48. MOA 0.42 long, front width 0.43, back width 0.49. Clypeus height 0.37, 2.06 times of AME diameter. Chelicerae with three promarginal and two retromarginal teeth. Measurements of legs: leg I 9.88 (2.62 + 1.01 + 2.27 + 2.41 + 1.57), II 9.07 (2.42 + 1.04 + 1.95 + 2.21 + 1.45), III 7.34 (2.38 + 1.04 + 1.83 + 1.34 + 0.75), IV 12.27 (3.14 + 1.17 + 2.61 + 3.21 + 2.14). Leg spination: femora: I pl 1 do 2 dt 1, II pl 1 do 2 dt 2, III pl 1 rl 1 do 2 dt 3, IV do 2 dt 3; tibiae: I plv 3 rlv 3, II plv 2 rlv 2, III–IV pl 2 rl 2 plv 2 rlv 2 vt 2; metatarsi: I–II plv 2 rlv 2, III–IV plv 2 rlv 2 vt 1 plt 1 rlt 1 dt 2 pld 2 rld 2. Palpal spination: femur: pl 1 do 2, patella: pl 1 do 2, tibia: pl 2 do 2, tarsus: pl 3 plv 1 rlv 1. Abdominal longitudinal wave-shaped patch indistinct, half of abdominal length; dorsal scutum and ventral sclerite fused, wrapped almost around whole abdomen, leaving only the spinneret area free.
Palp (Figs 6 A–D, 7A–C): tibial ventral groove shallow; retrobasal paracymbial spine long, pointed anteriorly; sperm duct thick; subtegulum surface undulating, with middle part membranous; embolus short and broad, with tip pointed ventrally.
Female (Figs 5 E–H, 6E–F, 7D–E). Total length 9.96–10.23 (n=2). One paratype: body 10.23 long; carapace 4.14 long, 2.89 wide, width/length= 0.70; abdomen 6.09 long, 4.30 wide. Diameters of eyes: AME 0.18, ALE 0.17, PME 0.18, PLE 0.17. Eye interdistances: AME–AME 0.14, AME–ALE 0.02, ALE–ALE 0.51, PME–PME 0.19, PME–PLE 0.07, PLE–PLE 0.66, ALE–PLE 0.06. OAW 0.91, CRW 1.60, OAW/CRW= 0.57. CRW/carapace width= 0.55. MOA 0.48 long, front width 0.46, back width 0.54. Clypeus height 0.32, 1.78 times of AME diameter. Chelicerae with three promarginal and two retromarginal teeth. Measurements of legs: leg I 10.89 (2.96 + 1.28 + 2.56 + 2.53 + 1.56), II 10.23 (2.85 + 1.18 + 2.31 + 2.42 + 1.47), III 9.79 (2.59 + 1.06 + 2.19 + 2.56 + 1.39), IV 13.37 (3.39 + 1.39 + 2.93 + 4.03 + 1.63). Leg spination: femora: I pl 1 do 2 dt 1, II do 2 dt 2, III–IV pl 1 do 2 dt 3; tibiae: I plv 3 rlv 3, II plv 2 rlv 2, III–IV pl 2 rl 2 plv 2 rlv 2 vt 2; metatarsi: I–II plv 2 rlv 2, III–IV plv 2 rlv 2 vt 1 plt 1 rlt 1 dt 2 pld 2 rld 2. Palpal spination: femur: pl 1 do 2 mv 5, patella: pl 1 do 2, tibia: pl 2 do 2, tarsus: pl 1 plv 1 rlv 1 pld 1 rld 1. Abdominal wave-shaped patch narrow and short, half of abdominal length.
Epigyne (Figs 6E, 7D): median plate broad, relatively conspicuous; epigynal depression diagonal and slightly curved; copulatory openings with crescentic ridges “facing” postero-laterally. Vulva (Figs 6F, 7E): copulatory ducts short; ST1 separated from each other and smaller than ST2; ST2 close together; fixed sclerite Y-shaped.
Distribution. Known only from the type locality (Fig. 8).
description: Published as part of Jin, Chi & Zhang, Feng, 2020, Fluctus gen. nov., a new castianeirine genus from Yunnan, China (Araneae: Corinnidae), pp. 161-172 in Zootaxa 4821 (1) on pages 167-171, DOI: 10.11646/zootaxa.4821.1.9, http://zenodo.org/record/4398352