Spinirta aviforma 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 aviforma

description: Spinirta aviforma Jin & Zhang, 2020
Figs 1A–B, 2–3, 14
Spinirta aviforma Jin & Zhang, 2020: 317, figs 3e, 16a–i, 17a–d (♂).
Chinese name
¼刺Żü
Differential diagnosis
Female of Spinirta aviforma Jin & Zhang, 2020 resembles S. forcipata Jin & Zhang, 2020 in having the similar kidney-shaped copulatory openings (Figs 2A, 3C; Jin & Zhang 2020: figs 9g, 10e) but can be distinguished by the posterior margin of epigynal plate relatively narrow and forming an edge in S. aviforma (Figs 2A, 3C), vs posterior margin relatively round in S. forcipata (Jin & Zhang 2020: figs 9g, 10e); spermathecae separated by a distance half of their diameter in S. aviforma (Figs 2A, 3C), vs separated by distance more than spermatheca’s diameter in S. forcipata (Jin & Zhang 2020: figs 9g, 10e).
Material examined
Holotype
CHINA • ♂; Chongqing City, Beibei District, Jinyun Mountain Natural Reserve, Banzigou; 29°47′13″ N, 106°20′00″ E; alt. 518 m; 5 Oct. 2010; H.J. Liu leg.; pitfall traps; MHBU.
Other material examined
CHINA • 2 ♂♂, 2 ♀♀; Chongqing City, Beibei District, Jinyun Mountain Natural Reserve; 29°49′27″ N, 106°23′46″ E; alt. 613 m; 1 Oct. 2022; Q.L. Lu leg.; SWU-COSA-01 to 04.
Description
Male (SWU-COSA-01, Figs 1A, 3A) MEASUREMENTS. Total length 10.73. Prosoma 5.41 long, 4.20 wide; opisthosoma 5.11 long, 3.45 wide.
Eye sizes and interdistances: AME 0.38, ALE 0.30, PME 0.32, PLE 0.32; AME–AME 0.17, AME– ALE 0.11, PME–PME 0.28, PME–PLE 0.37, ALE–PLE 0.19. MOA 0.91 long, anterior width 0.91, posterior width 0.93. Clypeus height 0.30.
CHELICERAE. With three promarginal and four retromarginal teeth.
LEG MEASUREMENTS. I = 14.21 (3.90, 5.15, 3.19, 1.97); II = 13.43 (3.78, 4.69, 3.11, 1.85); III = 11.56 (3.25, 4.05, 2.69, 1.57); IV = 14.24 (4.27, 5.35, 4.44, 1.80). Leg formula: 4123.
PALP (Fig. 3E–G). For description see Jin & Zhang (2020).
Female (SWU-COSA-02, Figs 1B, 3B)
MEASUREMENTS. Total length 12.30. Prosoma 5.74 long, 4.55 wide; opisthosoma 6.52 long, 4.04 wide. Eye sizes and interdistances: AME 0.37, ALE 0.32, PME 0.32, PLE, 0.34; AME–AME 0.24, AME– ALE 0.12, PME–PME 0.31, PME–PLE 0.38, ALE–PLE 0.21. MOA 0.95 long, anterior width 0.91, posterior width 0.95. Clypeus height 0.32.
LEG MEASUREMENTS. I = 13.96 (4.02, 5.37, 2.84, 1.73); II = 13.22 (3.94, 4.41, 3.11, 1.76); III = 12.57 (3.50, 4.48, 2.98, 1.61); IV = 16.73 (4.25, 5.89, 4.75, 1.84). Leg formula: 4123.
EPIGYNE (Figs 2A, 3C). Copulatory openings kidney-shaped, almost parallel to each other.
VULVA (Figs 2A, 3D). Copulatory ducts thick, pear-shaped, extending poteriorly, anteriorly with small membranous part; accessory glands small, spherical; spermathecae separated by less than the spermathecae diameter; fertilization ducts large, present above spermathecae.
Distribution
China (Chongqing) (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 75-78, DOI: 10.5852/ejt.2024.917.2389, http://zenodo.org/record/10473449