Corinnomma simplex Zhang & Jin & Zhang 2022, sp. nov.
Creators: name: Zhang, Lu
name: Jin, Chi
name: Zhang, Feng
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Corinnidae
Corinnomma
Corinnomma simplex

description: Corinnomma simplex sp. nov. ‹dzẘừNjff›
Figs 5–6, 9C–D, 10C–D
Corinnomma severum Sankaran, 2021: 548, figs 7A–F, 8A–C (♁ misidentified).
Type material. Holotype ♁ (MHBU, YNM112) from CHINA: Yunnan Province: Fengqing County, Fengshan Park (24°35′37.9″N, 99°54′13.24″E, 1748 m a.s.l.), 25 July 2021, leg. Lu Zhang.
Paratype: 1♀ (MHBU, YNM115) from CHINA: Yunnan Province: Mengla County, Menglun Town, Leprosy Village (21°54′11.77″N, 101°16′53.69″E, 594 m a.s.l), 3 August 2021, leg. Lu Zhang.
Etymology. The specific name is an adjective, referring to the structure of the embolus (Fig. 6A–C). Latin simplex = simple.
Diagnosis. The new species resembles C. severum in having transverse stripes on the abdomen, but can be distinguished by the carapace with cambered edge (vs. smooth edge in C. severum) (compare Fig. 5A, C with Fig. 3A, C). The males of C. simplex sp. nov. can be distinguished from the males of C. severum by: 1) the hook-like embolus (vs. claw-like with two bends, short and coiled in C. severum) (compare Fig. 10C–D with Fig. 10A–B); 2) the retrobasal paracymbial spine shaped like a mango-stone (vs. digitiform in C. severum) (compare Fig. 9C–D with Fig. 9E–F). The females can be further distinguished by the S-shaped primary spermathecae (vs. inverted J-shaped in C. severum) (compare Fig. 6D–E with Fig. 4D–E).
Description. Male (holotype, YNM112, Fig. 5A–B). Total length 5.88; carapace 3.04 long, 1.94 wide; abdomen 2.84 long, 1.61 wide. Eye sizes and interdistances: AME 0.15, ALE 0.08, PME 0.13, PLE 0.12; AME–AME 0.28, AME–ALE 0.18, ALE–ALE 0.62, PME–PME 0.33, PME–PLE 0.23, PLE–PLE 0.81, ALE–PLE 0.19; MOA 0.26 long; anterior width 0.40, posterior width 0.45. Clypeal height 0.32. Chelicerae with three pro- (middle largest, distal smallest) and two retromarginal teeth (same size). Measurements of legs: I 8.09 (1.98, 0.78, 2.11, 1.98, 1.24), II 6.33 (1.80, 0.55, 1.51, 1.43, 1.04), III 7.31 (1.99, 0.73, 1.67, 1.95, 0.97), IV 9.98 (2.60, 0.79, 2.43, 3.03, 1.13). Spination: femur I–IV do 3; femur I pl 3 rl 1, II pl 3 rl 2, III–IV pl 3 rl 3, tibia I–II do 1 plv 3 rlv 3, III–IV do 1 pl 2 rl 2 plv 3 rlv 3, metatarsus I–II plv 2 rlv 2, III–IV pl 3 rl 3 plv 3 rlv 3 vt 1. Carapace brown, oval, with cambered margins. Sternum brown,with several setae. Abdomen brown, with several vague bands covered by plumose hairs.
Palp (Figs 6A–C, 10C–D). Cymbium with distinct retrobasal paracymbial spine, covered with ridges and shaped like mango stone (Fig. 9C–D). Embolus hook-shaped and helically twisted, coiled less than one turn (Figs 6A–C, 10C–D).
Female (YNM115, Fig. 5C–D). Like the male, except by the following: total length 7.10; carapace 3.70 long, 2.36 wide; abdomen 3.40 long, 2.35 wide. Eye sizes and interdistances:AME 0.19, ALE 0.14, PME 0.16, PLE 0.13; AME–AME 0.37, AME–ALE 0.18, ALE–ALE 0.71, PME–PME 0.39, PME–PLE 0.29, PLE–PLE 0.93, ALE–PLE 0.22; MOA 0.35 long; anterior width 0.51, posterior width 0.53. Clypeal height 0.30. Measurements of legs: I 10.23 (2.87, 0.86, 2.68, 2.37, 1.45), II 9.77 (2.70, 0.81, 2.59, 2.25, 1.42), III 9.18 (2.20, 0.75, 2.13, 2.27, 1.83), IV 12.23 (3.29, 1.01, 2.96, 3.50, 1.47). Spination: femur I do 3 (left with do 2) plv 3 rlv 3, II–IV do 3 plv 3 rlv 3; tibia III–IV do 1 pl 2 rl 2 plv 3 rlv 3, III plv 2 rlv 2; metatarsus I–II plv 2 rlv 2, III–IV pl 3 rl 3 plv 3 rlv 3 vt 1. Carapace dark brown. Sternum dark brown. Abdomen dark brown, with wrinkles.
Epigyne as in Fig. 6D–E. Copulatory openings situated laterally in posterior of epigastric plate, with C-shaped edges (Fig. 6D). Copulatory ducts curved upward and extended into primary spermathecae (Fig. 6D–E). Primary spermathecae S-shaped (Fig. 6D–E). Secondary spermathecae sac-like, with contiguous proximal oval and separated distal parts (Fig. 6E). Fertilization duct thick, short, lying on secondary spermathecae and connecting with lightly sclerotized, V-shaped sclerite on distal part of epigastric plate (Fig. 6E).
Distribution. China (Yunnan).
Remark. Comparison of male C. severum described by Sankaran (2021) and C. simplex sp. nov. described in this paper (fig. 8A–C in Sankaran 2021; Fig. 6A–C) shows that the male “ C. severum ” identified by Sankaran (2021) should be the male of C. simple x sp. nov..
description: Published as part of Zhang, Lu, Jin, Chi & Zhang, Feng, 2022, Two new species of Corinnomma Karsch, 1880 from Yunnan, China (Araneae Corinnidae, Castianeirinae), pp. 240-256 in Zootaxa 5222 (3) on pages 247-250, DOI: 10.11646/zootaxa.5222.3.2, http://zenodo.org/record/7461429