Corinnomma severum
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 severum

description: Corinnomma severum (Thorell, 1877) ‹ḆffiừNjff›
Figs 3– 4, 9E–F, 10A–B
Corinna severa Thorell, 1877: 481.
Corinnomma severum Karsch, 1880: 375.
Corinnomma harmandi Simon, 1886: 158.
Castianeira himalayensis Tikader, 1981: 265, figs 14–16 (misidentified per Deeleman-Reinhold, 1993: 177) (for a complete list of references, see WSC 2022).
Corinnomma yulinguana Barrion, Barrion-Dupo & Heong, in Barrion et al., 2013: 10, fig. 10A–D syn. nov.
Type material: Holotype ♁ from INDONESIA: Southeast Sulawesi, Kendari (03°59’S, 122°30’E; 3 m), 1874, leg. O. Beccari, not examined.
Material examined: CHINA: Yunnan Province: 1♁ 2 ♀ Mengla County, Mengxing Village, July 2000, leg. Mingsheng Zhu (MHBU); 1♁ 1♀ Xishuangbanna Tropical Botanical Garden of Chinese Academy of Sciences, June 2003, leg. Guodong Ren (MHBU); 9♁ 7♀ Xishuangbanna Original Forest Park (22°01′0.94″N, 100°51′09.47″E, 880m), 31 July 2021, leg. Lu Zhang (MHBU); 3♁ 6♀ Mengla County, Menglun Town, Xishuangbanna Tropical Botanical Garden of Chinese Academy of Sciences (21°55′46.59″N, 101°15′07.03″E, 555m), August 2021, leg. Lu Zhang (MHBU). Guizhou Province: 1♁ Yanhe County, Mayang River, 28 September 2007, leg. Jingmao Liu (MHBU); 1♀ Jiangkou County, Fanjing Mountain Heiwan River (27°51.207´N, 108°45.871´E, 871m), 12 July 2012, leg. Dong Wang (MHBU); 1♁ Yanhe County, Xinjing Village to Ruishi Village Majingzi cave (28°52.622´N – 28°51.565´N, 108°18.008´E –108°15.923´E, 515m – 334m), 20 April 2013, leg. Xuankong Jiang (MHBU); 1♀ Huaxi District, National urban wetland park of Huaxi, 6 Jun. 2016, leg. Luyu Wang (MHBU). Hainan Province: 1♁ Ledong County, Jianfengling Nature Reserve, 14 December 2003, leg. Mingsheng Zhu (MHBU); 1♀ 1♁ Qiongzhong County, Limu Mountain Quling Ancient Forest Garden, 18 August 2007, leg. Feng Zhang (MHBU); 1♁ Fanjia Village, Sanya Conservation Station, 14 May 2009, leg. Guangxin Han (MHBU); 1♀ Cangjiang County, Bawangling Town, Erhao Bridge, 21 May 2009, leg. Feng Zhang (MHBU); 1♁ Baisha County, Fulong Township, Keren Village, 30 July 2009, leg. Feng Zhang (MHBU); 1♀ Fanjia Village, 19 January 2015, leg. Chi Jin (MHBU). Hunan Province: 3♁ Fenghuang County, Qifeng Mountain (27.951746°N, 109.607901°E, 491m), 16 November 2018, leg. Zhaoyi Li (MHBU); 1♁ 9♀ Sangzhi County, West Forest Farm (29.394481°N, 110.182593°E, 394m), 9 November 2018, leg. Zhaoyi Li (MHBU); 2♁ 1♀ Shimen County, Hupingshan Town (29.934215°N, 110.785527°E, 242m), November 2020, leg. Yannan Mu (MHBU); 2♀ Dao County, Qingtang Town, Xiaotang Village, Dajiangyuan (25.456973°N, 111.358216°E, 474m), 12 November 2020, leg. Yannan Mu (MHBU). Guangxi Province: 1♁ Chongzuo City, Ecological Park, 20 August 2004, leg. Mingsheng Zhu (MHBU); 1♀ Wuming County, Nanshuang Village, Daming Mountain, 11 May 2006, leg. Mingsheng Zhu (MHBU); 1♁ Ningming County, Aidian Town, 19 May 2006, leg. Mingsheng Zhu (MHBU). Guangdong Province: 1♁ Chao’an County, Shi’an, 21 July 2013, leg. Shuwen Xing (MHBU); 1♀ Shixing County, Che Baling National Nature Reserve (24°42′18.67″– 24°43′22.42″N, 114°9′44.63″– 114°15′22.49″E, 509– 358m), 24 May 2021, leg. Yannan Mu (MHBU). Zhejiang Province: 2♀ Yin County, Tiantong Mountain, June 1990 (MHBU). Shanxi Province: 1♀ Xixiang County, Yankou Town, Wu Zi Shan, 27 May 2013, leg. Mingxin Liu (MHBU).
Diagnosis: C. severum can be distinguished from C. simplex sp. nov. by: 1) the short, claw-like embolus (vs. hooklike embolus in C. simplex sp. nov.) (compare Fig. 10A–B with Fig. 10C–D); 2) the digitiform retrobasal paracymbial spine (vs. mango-stone shaped in C. simplex sp. nov.) (compare Fig. 9E–F with Fig. 9C–D); 3) the inverted J-shaped primary spermathecae (vs. S-shaped in C. simplex sp. nov.) (compare Fig. 4D–E with Fig. 6D–E).
Redescription. Male (YNM110; Fig. 3A–B): Total length 7.53; carapace 3.53 long, 2.08 wide; abdomen 4.00 long, 1.97 wide. Eye sizes and interdistances: AME 0.14, ALE 0.08, PME 0.10, PLE 0.12; AME–AME 0.15, AME– ALE 0.08, ALE–ALE 0.56, PME–PME 0.36, PME–PLE 0.14, PLE–PLE 0.73, ALE–PLE 0.05; MOA 0.30 long; anterior width 0.40, posterior width 0.46. Clypeal height 0.24. Chelicerae with three pro- (middle largest, distal smallest) and two retromarginal teeth (same size). Measurements of legs: I 9.77 (2.68, 0.91, 2.56, 2.40, 1.22), II 9.19 (2.53, 0.70, 2.49, 2.22, 1.25), III 8.61 (2.44, 0.61, 2.25, 2.21, 1.10), IV 12.20 (3.22, 0.87, 2.95, 3.69, 1.47). Spination: femur I–IV do 3; femur I–IV pl 3, I–II rl 1, III–IV rl 3, tibia I do 1, I–II plv 2 rlv 2, 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 black, oval. Sternum black. Abdomen black, with several wide white transverse bands covered by plumose hairs.
Palp (Figs 4A–C, 10A–B). Cymbium with distinct digitiform retrobasal paracymbial spine covered with ridges (Fig. 9E–F). Embolus claw-like, with two bends, short and coiled (Figs 4A–C, 10A–B).
Female. Like the male except by the following: (YNM116; Fig. 3C–D): total length 7.15; carapace 3.53 long, 2.19 wide; abdomen 3.62 long, 2.31 wide. Eye sizes and interdistances:AME 0.19, ALE 0.14, PME 0.13, PLE 0.12; AME–AME 0.32, AME–ALE 0.22, ALE–ALE 0.70, PME–PME 0.39, PME–PLE 0.27, PLE–PLE 0.90, ALE–PLE 0.14; MOA 0.35 long; anterior width 0.46, posterior width 0.53. Clypeal height 0.27. Measurements of legs: I 9.02 (2.39, 0.76, 2.47, 2.05, 1.35), II 8.51 (2.40, 0.74, 2.17, 2.01, 1.19), III 8.37 (2.67, 0.80, 1.89, 1.90, 1.11), IV 10.28 (2.48, 0.77, 2.64, 3.07, 1.32). Spination: femur I–IV do 3; femur I pl 1, II–IV pl 2, III rl 2, IV rl 1, tibia I plv 3 rlv 3, II plv 2 rlv 2, III pl 2 rl 2 plv 2 rlv 2, IV do 1 pl 2 rl 2 plv 2 rlv 2, metatarsus I–II plv 2 rlv 2, III do 1 pl 2 rl 2 plv 2 rlv 2, IV pl 3 rl 3 plv 3 rlv 3 vt 1. Carapace dark brown. Sternum dark brown. Abdomen light brown, with several vague white bands.
Epigyne as in Fig. 4D–E. Copulatory openings situated laterally in posterior of epigastric plate, with “6”-shaped edges. Copulatory ducts transverse, curved upward and extended into inverted J-shaped primary spermathecae. Secondary spermathecae sac-like, with contiguous proximal and spherical, separated distal parts. Fertilization duct thin, short, lying the secondary spermathecae.
Variation. Total length: male (n=28) 5.70–9.02; female (n=38) 7.47–9.83.
Distribution. India to China, Philippines, Indonesia (Sumatra, Sulawesi) (WSC 2022).
Remark. We compared the original description and figures of C. yulinguana Barrion, Barrion-Dupo & Heong, 2013, with C. severum (compare fig. 10A–D in Barrion et al. 2013 with Fig. 4D–E). We find the following features are consistent: 1) primary spermathecae inverted J-shaped (see fig. 10D in Barrion et al. 2013; Fig. 4E); 2) copulatory ducts transverse, curved upward and extended into primary spermathecae (see fig. 10D in Barrion et al. 2013; Fig. 4E); 3) secondary spermathecae with spherical distal parts (see fig. 10D in Barrion et al. 2013; Fig. 4E). Therefore, C. yulinguana syn. nov. should be regarded as a junior synonym of C. severum.
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 244-247, DOI: 10.11646/zootaxa.5222.3.2, http://zenodo.org/record/7461429