Corinnomma simplex, Zhang & Jin & Zhang, 2022

Zhang, Lu, Jin, Chi & Zhang, Feng, 2022, Two new species of Corinnomma Karsch, 1880 from Yunnan, China (Araneae Corinnidae, Castianeirinae), Zootaxa 5222 (3), pp. 240-256 : 247-250

publication ID	https://doi.org/ 10.11646/zootaxa.5222.3.2
publication LSID	lsid:zoobank.org:pub:B0CAB82C-1485-40D2-AF17-7FC3FBB22308
DOI	https://doi.org/10.5281/zenodo.7461449
persistent identifier	https://treatment.plazi.org/id/039D8789-B913-FF8F-98E2-19E59F9A86F8
treatment provided by	Plazi
scientific name	Corinnomma simplex
status	sp. nov.

Treatment

Corinnomma simplex sp. nov. ‹dzẘừNjff›

Figs 5–6 View FIGURE 5 View FIGURE 6 , 9C–D View FIGURE 9 , 10C–D View FIGURE 10

Corinnomma severum Sankaran, 2021: 548 View in CoL , 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. GoogleMaps

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. GoogleMaps

Etymology. The specific name is an adjective, referring to the structure of the embolus ( Fig. 6A–C View FIGURE 6 ). 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 View FIGURE 5 with Fig. 3A, C View FIGURE 3 ). 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 View FIGURE 10 with Fig. 10A–B View FIGURE 10 ); 2) the retrobasal paracymbial spine shaped like a mango-stone (vs. digitiform in C. severum ) (compare Fig. 9C–D View FIGURE 9 with Fig. 9E–F View FIGURE 9 ). The females can be further distinguished by the S-shaped primary spermathecae (vs. inverted J-shaped in C. severum ) (compare Fig. 6D–E View FIGURE 6 with Fig. 4D–E View FIGURE 4 ).

Description. Male (holotype, YNM112, Fig. 5A–B View FIGURE 5 ). 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 View FIGURE 6 , 10C–D View FIGURE 10 ). Cymbium with distinct retrobasal paracymbial spine, covered with ridges and shaped like mango stone ( Fig. 9C–D View FIGURE 9 ). Embolus hook-shaped and helically twisted, coiled less than one turn ( Figs 6A–C View FIGURE 6 , 10C–D View FIGURE 10 ).

Female (YNM115, Fig. 5C–D View FIGURE 5 ). 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 View FIGURE 6 . Copulatory openings situated laterally in posterior of epigastric plate, with C-shaped edges ( Fig. 6D View FIGURE 6 ). Copulatory ducts curved upward and extended into primary spermathecae ( Fig. 6D–E View FIGURE 6 ). Primary spermathecae S-shaped ( Fig. 6D–E View FIGURE 6 ). Secondary spermathecae sac-like, with contiguous proximal oval and separated distal parts ( Fig. 6E View FIGURE 6 ). Fertilization duct thick, short, lying on secondary spermathecae and connecting with lightly sclerotized, V-shaped sclerite on distal part of epigastric plate ( Fig. 6E View FIGURE 6 ).

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 View FIGURE 6 ) shows that the male “ C. severum ” identified by Sankaran (2021) should be the male of C. simple x sp. nov. .