Research Article |
Corresponding author: Xian-Jin Peng ( xjpeng@126.com ) Academic editor: Shuqiang Li
© 2016 Xiao-Qi Mi, Cheng Wang, Xian-Jin Peng.
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:
Mi X-Q, Wang C, Peng X-J (2016) Two new species of the orb-weaver genus Chorizopes from Yunnan, China (Araneae, Araneidae). ZooKeys 626: 45-55. https://doi.org/10.3897/zookeys.626.7485
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Two new species of the orb-weaver genus Chorizopes from Yunnan Province, China are described: C. albus sp. n. (male and female) from the Gaoligong Mountains and Ailao Mountains, and C. longus sp. n. (male and female) from the Gaoligong Mountains. Chorizopes albus sp. n. can be distinguished from the related species C. shimenensis by: 1) median apophysis widest at the middle part versus widest at the base in the latter; 2) median apophysis without the dorsal spur found in that of the latter; 3) spermathecae spherical versus ovoid in the latter; 4) having one pair of large white spots on posterior lateral area of abdomen versus having two pairs of crescent white patches with dark edges on dorsal abdomen in the latter. Chorizopes longus sp. n. can be separated from the similar species C. tumens by: 1) the median apophysis having a knob on the distal half versus having a knob on the basic half in the latter; 2) male palp having a spur versus absent in the latter; 3) the width of the groove between the paracymbium and cymbium as thick as the paracymbium versus two times as thick as the paracymbium in the latter; 4) copulatory duct attached on anterior ventral of the spermatheca versus on anterior dorsal in the latter. Photos of body and copulatory organs, line drawings of copulatory organs, as well as the distribution data are provided. The type specimens are deposited in the College of Life Sciences, at the
Diagnosis, spider, taxonomy
The orb-weaver spider genus Chorizopes is characterised by an extremely elevated cephalic region and wide separation of lateral eyes from median eyes. At present, 25 species from Asia and Africa are included in this genus (
While examining specimens collected in Yunnan Province, in southwest China, two new species belonging to the genus Chorizopes were identified and are described in this paper.
Specimens are kept in 75% ethanol. The epigynum was cleared in lactic acid for examination. An Olympus SZX16 stereo microscope was used for specimen examination. Digital photographs were taken using a Canon Powershot G12 digital camera mounted on an Olympus SZX16. Compound focus images were generated using Helicon Focus software. Leg measurements are given as: total length (femur, patella + tibia, metatarsus, tarsus). All measurements are given in millimetres (mm).
ALE anterior lateral eyes;
AME anterior median eyes;
C conductor;
CD copulatory ducts;
CO copulatory openings;
E embolus;
FD fertilization ducts;
HNU
MA median apophysis;
MOA median ocular area;
MTU Museum of Tongren University;
PLE posterior lateral eyes;
PME posterior median eyes;
S spermatheca;
TA terminal apophysis.
Chorizopes frontalis O. Pickard-Cambridge, 1870
Holotype: male, China: Yunnan Province, Jingdong County, Huashan Township, Wengang Village, 24.3389°N, 101.1410°E, 1728 m, 16 August 2015, Cheng Wang, Zhaolin Liao, Peng Luo and Gaotao Liu leg (MTU-WC20150816). Paratypes: 1 male and 2 females, same data as holotype (MTU-WC20150816); 1 male and 2 females, Yunnan Province, Jingdong County, Huashan Township, Yingpan Village, 24.2788°N, 101.0979°E, 1273 m, 15 August 2015, Cheng Wang, Zhaolin Liao, Peng Luo and Gaotao Liu leg (MTU-WC20150815); 1 female, Yunnan Province, Fugong County, Shangpa Township, 26.8620°N, 98.8714°E, 1177 m, 19–27 August 2005, Tang Guo leg (
The specific name comes from the Latin albus, meaning whitish, referring to the large white spots on lateral abdomen; adjective.
The new species can be distinguished from all known congeneric species by the presence of a pair of white spots on lateral abdomen (Figs
Male (holotype): Carapace dark brown, hairy, elevated in cephalic region. Chelicerae dark brown, have seven promarginal teeth. Sternum triangular, pointed posteriorly, yellowish brown. Legs yellowish brown, with wide darker grey annuli. Abdomen with one pair of lateral tubercles and two vertically arranged caudal tubercles. Dorsal abdomen greyish with two white spots, ventral yellowish brown, one pair of big white spots situated on the posterior lateral (Figs
Female (based on one of WC20150816): Colouration and body shape same as in male (Figs
Males, total length 2.65–2.90, females, total length 3.35–4.05.
China (Yunnan Province).
The specific name comes from the Latin longus, meaning long, referring to the long median apophysis; adjective.
The new species can be separated from all known congeneric species by: the median apophysis extremely long, more than 2/5 portions beyond the edge of the genital bulb in prolateral view (Figs
Holotype, male, CHINA, Yunnan Province, Tengchong County, Houqiao Township, Yangjiatian Village, 25.3539°N, 98.2549°E, 1785 m, 28 May 2006, Xinping Wang and Peng Hu (
Male (holotype): Carapace dark brown, hairy, cephalic region elevated. Chelicerae dark brown, have seven promarginal teeth. Sternum triangular, dark brown. Gnathocoxae and labium yellowish brown. Legs yellowish brown with dark grey annuli. Dorsal abdomen greyish brown, cardiac pattern pale and long bar-shaped, two pairs of white spots on posterior lateral of cardiac pattern, posterior area of abdomen with one pair of lateral tubercles and two vertically arranged caudal tubercles (Figs
Female (based on WH060528): Coloration and body shape same as in male (Figs
Males, total length 3.10–3.40 (n=4), females, total length 3.80–4.75 (n=6).
China (Yunnan Province).
We are grateful to Changmin Yin, Charles Griswold, David Kavanaugh, Darrell Ubick, Hengmei Yan, Hongbin Liang, Dazhi Dong, Xinping Wang, Guo Tang, Peng Hu, Jiafang Hu, Zhaolin Liao, Peng Luo and Gaotao Liu for collecting the specimens. This research work was sponsored by the National Science Foundation of the USA (No. DEB-0103795), the National Special Fund on Basic Research of Science and Technology of China (No. 2014FY110100) and the National Natural Sciences Foundation of China (NSFC-31272271, 31272272, 30970327, 31301861). It is also partly supported by the Science and Technology Foundation of Guizhou Province (No. J(2012)2313), and the Hunan Provincial Program for Development of Key Disciplines in Ecology.