Biodiversity Data Journal :
Taxonomy & Inventories
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Corresponding author: Yejie Lin (linyejie15@gmail.com), Chengming Huang (cmhuang@ioz.ac.cn)
Academic editor: Yanfeng Tong
Received: 10 Mar 2023 | Accepted: 07 Apr 2023 | Published: 11 Apr 2023
© 2023 Wei Wang, Yejie Lin, Xiaoqing Zhang, Chang Chu, Shuqiang Li, Chengming Huang
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Wang W, Lin Y, Zhang X, Chu C, Li S, Huang C (2023) Two new species of the genus Asceua Thorell, 1887 (Araneae, Zodariidae) from China. Biodiversity Data Journal 11: e103298. https://doi.org/10.3897/BDJ.11.e103298
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The spider genus Asceua Thorell, 1887 contains 34 species, almost entirely limited to Indochina, India, Sri Lanka and China, with a regional distribution. Eleven species of Asceua are currently only known from China, five of them are described only from one sex.
Two new spider species of the genus Asceua are reported from China, A. haocongi sp. n. (♂♀, Hainan) and A. zijin sp. n. (♂♀, Jiangsu). Photos and a morphological description of the new species are provided.
Hainan, Jiangsu, taxonomy, diagnosis, type
The ant spider family Zodariidae Thorell, 1881 contains 90 genera and 1264 known species worldwide (
During the examination of spider collections from China (Hainan and Jiangsu), we found two new species and describe them here as A. haocongi sp. n. and A. zijin sp. n (Fig.
All specimens were preserved in 80% ethanol. The spermathecae were cleared in trypsin enzyme solution to dissolve non-chitinous tissues. Specimens were examined under a Leica M205C stereomicroscope. Photomicrographs were taken with an Olympus C7070 zoom digital camera (7.1 megapixels). Laboratory habitus photographs were taken with a Sony A7RIV digital camera equipped with a Sony FE 90 mm Goss lens. Photos were stacked with Helicon Focus® (Version 7.6.1) or Zerene Stacker® (Version 1.04) and processed in Adobe Photoshop CC2022®. The distribution map was generated with ArcGIS v. 10.2 (ESRI Inc.).
All measurements are in millimetres (mm) and were obtained with an Olympus SZX16 stereomicroscope with a Zongyuan CCD industrial camera. All measurements of body lengths do not include the chelicerae. Eye sizes are measured as the maximum diameter from either the dorsal or frontal view. Leg measurements are given as follows: total length (femur, patella, tibia, metatarsus, tarsus). The type materials are deposited in the Institute of Zoology, Chinese Academy of Sciences in Beijing (IZCAS).
Abbreviations: ALE, anterior lateral eye; AME, anterior median eye; C, conductor; CD, copulatory duct; CF, cymbial furrow; CO, copulatory opening; DTA, dorsal tibial apophysis; E, embolus; EB, embolic base; FD, fertilisation duct; H, hood; MOA, median ocular area; PLE, posterior lateral eye; PME, posterior median eye; RTA, retrolateral tibial apophysis; S, spermatheca; TA, tegular apophysis; VTA, ventral tibial apophysis.
Asceua torquata (Simon, 1909), 4 males, without institution ID, China, Guangdong, Shenzhen, IZCAS.
Male (holotype). Total length 2.13; carapace 1.07 long, 0.74 wide, opisthosoma 1.06 long, 0.71 wide. Eye sizes and interdistances: AME 0.08, ALE 0.06, PME 0.06, PLE 0.06, AME–AME 0.05, AME–ALE 0.03, PME–PME 0.08, PME–PLE 0.08, AME–PME 0.09, ALE–PLE 0.05. MOA 0.21 long, front width 0.19, back width 0.19. Clypeus height 0.29. Chelicerae with 2 promarginal teeth. Leg measurements: I 3.00 (0.76, 0.24, 0.73, 0.78, 0.49), II 2.34 (0.64, 0.25, 0.48, 0.61, 0.36), III 2.34 (0.64, 0.25, 0.47, 0.64, 0.36), IV 3.23 (0.84, 0.25, 0.73, 0.96, 0.45).
Colouration (Fig.
Palp (Fig.
Female (IZCAS-Ar44409). Total length 2.57; carapace 1.22 long, 0.84 wide, opisthosoma 1.35 long, 0.92 wide. Eye sizes and interdistances: AME 0.08, ALE 0.07, PME 0.06, PLE 0.06, AME–AME 0.05, AME–ALE 0.03, PME–PME 0.09, PME–PLE 0.10, AME–PME 0.10, ALE–PLE 0.06. MOA 0.23 long, front width 0.20, back width 0.21. Clypeus height 0.33. Chelicerae with 2 promarginal teeth. Leg measurements: I 2.90 (0.77, 0.27, 0.65, 0.73, 0.48), II 2.44 (0.67, 0.27, 0.49, 0.61, 0.40), III 2.45 (0.66, 0.28, 0.49, 0.66, 0.36), IV 3.34 (0.87, 0.28, 0.75, 0.98, 0.46).
Colouration (Fig.
Epigyne (Fig.
The male is similar to that of Asceua radiosa Jocqué, 1986 by the triangular-shaped retrolateral tibial apophysis, same shaped cymbial furrow and tegular apophysis needle-shaped. Females share the same shape of the copulatory duct. However, the new species can be distinguished from A. radiosa by the cymbial furrow with a digitiform apophysis posteriorly (Fig.
The species is named after the collector Mr. Haochong Yang; noun (name) in genitive case.
Male (holotype). Total length 3.33; carapace 1.56 long, 1.17 wide, opisthosoma 1.77 long, 1.03 wide. Eye sizes and interdistances: AME 0.07, ALE 0.06, PME 0.07, PLE 0.07, AME–AME 0.06, AME–ALE 0.06, PME–PME 0.09, PME–PLE 0.14, AME–PME 0.13, ALE–PLE 0.05. MOA 0.26 long, front width 0.17, back width 0.22. Clypeus height 0.40. Chelicerae with 2 promarginal teeth. Leg measurements: I 4.12 (1.06, 0.37, 1.01, 1.03, 0.65), II 3.69 (0.99, 0.38, 0.84, 0.91, 0.57), III 3.41 (0.96, 0.41, 0.70, 0.88, 0.46), IV 4.38 (1.17, 0.42, 1.06, 1.18, 0.55).
Colouration (Fig.
Palp (Figs
Female (IZCAS-Ar44415). Total length 3.98; carapace 1.70 long, 1.16 wide, opisthosoma 2.28 long, 1.38 wide. Eye sizes and interdistances: AME 0.06, ALE 0.08, PME 0.07, PLE 0.08, AME–AME 0.06, AME–ALE 0.08, PME–PME 0.09, PME–PLE 0.15, AME–PME 0.15, ALE–PLE 0.04. MOA 0.27 long, front width 0.16, back width 0.23. Clypeus height 0.42. Chelicerae with 2 promarginal teeth. Leg measurements: I 3.70 (1.00, 0.39, 0.86, 0.85, 0.60), II 3.45 (0.95, 0.41, 0.75, 0.80, 0.54), III 3.40 (0.93, 0.44, 0.70, 0.88, 0.45), IV 4.23 (1.10, 0.44, 1.00, 1.12, 0.57).
Colouration (Fig.
Epigyne (Fig.
The male is similar to Asceua torquata (Simon, 1909) and A. japonica (Bösenberg & Strand, 1906) by the same shape of retrolateral tibial apophysis and cymbium, long and slender embolus. Females share the same shape of the copulatory duct. However, the new species can be distinguished from A. torquata by the opisthosoma dorsum with seven pale spots (Fig.
The specific name refers to the type locality; noun (name) in genitive case.
Known only from the type locality (Fig.
The manuscript benefitted greatly from comments by Yanfeng Tong, Hirotsugu Ono and two anonymous reviewers. We thank Tongyao Jiang (Beijing, China) for checking specimens. Danni Sherwood (UK) checked the English. Haocong Yang (Beijing, China) and Fan Gao (Jiangsu, China) helped in fieldwork. Ying Lu (Beijing, China) helped with measurements. Fan Gao (Jiangsu, China) helped with photographs.