Spinirta quadrata Jin & Zhang 2020
Creators: name: Wang, Lu-Yu
name: Irfan, Muhammad
name: Lu, Qian-Le
name: Zhang, Feng
name: Zhang, Zhi-Sheng
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Corinnidae
Spinirta
Spinirta quadrata

description: Spinirta quadrata Jin & Zhang, 2020
Figs 1E–F, 8–9, 14
Spinirta quadrata Jin & Zhang, 2020: 322, figs 3f, 18a–i, 19a–d (♂).
Chinese name
方刺Żü
Differential diagnosis
Female of Spinirta quadrata Jin & Zhang, 2020 can be distinguished from all other congeners by the atrium outline oval, wider than long, and accessory glands absent (Figs 8, 9C–D).
Material examined
CHINA • 1 ♂; Chongqing City, Wuxi County, Shuangyang Township, Yintiaoling Natural Reserve, Hongqi Administrative Station; 31°31′00″ N, 109°49′42″ E; alt. 1263 m; 16 Aug. 2022; T. Y. Ren leg.; SWUC-COSQ-01 • 2 ♂♂, 1 ♀; Yintiaoling Natural Reserve, Hongqi Administrative Station; 10–11 Aug. 2022; Q.L. Lu leg.; SWUC-COSQ-02 to 04 • 1 ♂, 1 ♀; Wuxi County, Shuangyang Township, Yintiaoling Natural Reserve, Laolingou; 31°32′49″ N, 109°51′54″ E; alt. 1286.10 m; 11 Aug. 2022; T.Y. Ren leg.; SWUC-COSQ-05, SWUC-COSQ-06 • 1 ♂; Yintiaoling Natural Reserve, Linkouzi; 31°28′28″ N, 109°52′40″ E; alt. 1289 m; 14 Aug. 2022; Q.L. Lu leg.; SWUC-COSQ-07 • 1 ♀; Yintiaoling Natural Reserve, Linkouz; 31°28′27″ N, 109°52′52″ E; alt. 1281 m; 16 Aug. 2022; B. Luo leg.; SWUC-COSQ-08.
Description
Male (SWUC-COSQ-01, Figs 1E, 9A) MEASUREMENTS. Total length 11.15. Prosoma 5.80 long, 4.57 wide; opisthosoma 5.18 long, 3.65 wide.
Eye sizes and interdistances: AME 0.34, ALE 0.30, PME 0.32, PLE 0.33; AME–AME 0.18, AME– ALE 0.13, PME–PME 0.33, PME–PLE 0.36, ALE–PLE 0.15. MOA 0.90 long, anterior width 0.87, posterior width 0.95. Clypeus height 0.43.
CHELICERAE. With three promarginal and five retromarginal teeth.
LEG MEASUREMENTS. I = 16.23 (4.55, 5.72, 3.72, 2.24); II = 14.99 (4.21, 5.12, 3.50, 2.16); III = 12.79 (3.85, 4.30, 3.14, 1.50); IV = 17.72 (4.71, 5.91, 5.01, 2.09). Leg formula: 4123.
PALP (Fig. 9E–G). For description see Jin & Zhang (2020).
Female (SWUC-COSQ-04, Figs 1F, 9B)
MEASUREMENTS. Total length 13.65. Prosoma 5.48 long, 4.37 wide; opisthosoma 7.49 long, 5.59 wide. Eye sizes and interdistances: AME 0.30, ALE 0.28, PME 0.30, PLE, 0.29; AME–AME 0.20, AME– ALE 0.14, PME–PME 0.33, PME–PLE 0.35, ALE–PLE 0.16. MOA 0.83 long, anterior width 0.82, posterior width 0.90. Clypeus height 0.31.
LEG MEASUREMENTS. I = 14.92 (4.31, 5.38, 3.21, 2.02); II = 14.17 (4.22, 4.90, 3.16, 1.89); III = 12.04 (3.57, 4.10, 2.79, 1.58); IV = 17.01 (4.70, 5.74, 4.71, 1.86). Leg formula: 4123.
EPIGYNE (Figs 8A, 9C). Atrium oval, wider than long, copulatory openings located posteriorly deep inside the atrium.
VULVA (Figs 8B, 9D). Copulatory ducts L-shaped, anterior margin partly membranous; accessory glands absent; spermathecae round; fertilization duct large, extending mesally.
Distribution
China (Chongqing, Hubei) (Fig. 14).
description: Published as part of Wang, Lu-Yu, Irfan, Muhammad, Lu, Qian-Le, Zhang, Feng & Zhang, Zhi-Sheng, 2024, Six species of the spider genus Spinirta Jin & Zhang, 2020 from southern China (Araneae: Corinnidae), pp. 74-93 in European Journal of Taxonomy 917 (1) on pages 84-85, DOI: 10.5852/ejt.2024.917.2389, http://zenodo.org/record/10473449