Research Article |
Corresponding author: Xiang Xu ( xux@hunnu.edu.cn ) Academic editor: Shuqiang Li
© 2016 Bing Zhou, Haiqiang Yin, Xiang Xu.
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:
Zhou B, Yin H, Xu X (2016) First description of the male of Hitobia makotoi Kamura, 2011 (Araneae, Gnaphosidae). ZooKeys 579: 1-7. https://doi.org/10.3897/zookeys.579.7489
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The male of Hitobia makotoi Kamura, 2011 is described for the first time from Hengshan Mountain, Hunan Province, China. This species was originally described from Amami-ôshim Island, Japan and has been recorded from Gaoligong Mountain, Yunnan Province, China. Morphological descriptions and illustrations of both sexes of this species are given.
East Asia, ground spider, taxonomy
The spider genus Hitobia is distributed in East Asia with 16 species described to date, half of which are described by only the male or only the female (
The species Hitobia makotoi Kamura, 2011 was first described based on female specimens only from Amami-ôshim Island, Japan.
Specimens were examined with an Olympus SZX16 stereomicroscope. Details were further studied with an Olympus BX53 compound microscope. The illustrations were made using an Olympus drawing tube and inked on ink jet plotter paper. Photos were taken with a Canon PowerShot G12 digital camera mounted on an Olympus BX53 compound microscope and compound focus images were generated using Helicon Focus software (3.10 Free). Both the male palp and the female epigynum were detached from the spiders’ bodies for examination and illustration.
All specimens are deposited in the College of Life Sciences,
All measurements are given in millimeters. Leg measurements are given as: total length (femur, patella + tibia, metatarsus, tarsus). The following abbreviations are used in the text:
ALE anterior lateral eye
AME anterior median eye
MOA median ocular area
PLE posterior lateral eye
PME posterior median eye
Hitobia makotoi Kamura, 2011: 104, figs 3–7 (description and illustration of female).
Hitobia makotoi:
2 ♂ (
Male of H. makotoi can be distinguished from all other Hitobia by the extraordinarily elongated retrolateral tibial apophysis which is nearly as long as the cymbium, and its distal end serrated and with a small hook apically (Figs
Hitobia makotoi Kamura, 2011. A–C Male: A Left palp, ventral view B Same, retrolateral view C Enlarged embolus and conductor, retrolateral view B, C Female: B Epigynum, ventral view C Vulva, dorsal view. Scale bars = 0.1 mm. Abbreviations: C - conductor, E - embolus, FD - fertilization duct, H - hood, RTA - retrolateral tibial apophysis, S - spermatheca.
Male: Body length 3.92. Prosoma length 1.78, width 1.18; opisthosoma length 2.18, width 1.01. Clypeus height 0.04. Carapace black brown, oval, widest at coxae II and III. Fovea and cervical grooves indistinct (Fig.
Male palp (Figs
Female: Body length 5.45. Prosoma length 2.30, width 1.46; opisthosoma length 3.05, width 1.61. Clypeus height 0.06. Eye measurements and interdistances: AME 0.08, ALE 0.10, PME 0.08, PLE 0.10, AME–AME 0.03, AME–ALE 0.01, PME–PME 0.08, PME–PLE 0.06, ALE–PLE 0.10. MOA anterior width 0.18, posterior width 0.23, length 0.12. Leg spination: femora: I, II, IV d1-1-1, p1-0-0, III d1-1-1, p1-1-0, v1-1-0; patellae: III, IV r0-1-0; tibiae: I p1-0-0, v2-2-2, II p1-0-1, v2-2-1, III d2-2-0, p0-0-1, v2-2-1, r0-1-1, IV d1-0-0, p1-1-1, v1-0-1, r1-0-1; metatarsi: I v2-0-0, II p0-1-0, v2-0-0, III d0-1-1, p1-1-1, v0-0-1, r1-1-2. Leg measurements: I 3.80(1.28, 1.40, 0.68, 0.44), II 3.88 (1.24, 1.44, 0.68, 0.52), III 3.52(1.12, 1.16, 0.76, 0.48), IV 5.28(1.52, 1.80, 1.20, 0.76). Leg formula: IV-II-I-III.
Epigynum longer than wide, with a distinct anterior hood; atrium vertically elongated, and almost as long as epigynum, with the basal part very wide, and abruptly becoming narrow and extending to the anterior part (Figs
There are very small differences between the holotype female and the newly collected female specimen in the present study: the distal part of atrium is narrower and the basal part wider in the newly collected female specimen (Figs
We are grateful to Cheng Wang, Jiahui Gan and Yuhui Gong for collecting the specimens and to Professor Baoshi Zhang (Baoding University, China) for her comments on the manuscript. We thank Professor Takahide Kamura (Otemon Gakuin University, Japan) for both his kind help in comparing our specimens with the type specimens of Hitobia makotoi and his comments on the manuscript. This study was supported by the National Natural Sciences Foundation of China (NSFC-31471963/31372160/31272272/31272271), Program for New Century Excellent Talents in University (NCET-12-0717), Hunan Provincial Natural Science Foundation of China (11JJ1004, 12JJ3028) and by the Hunan Provincial Construct Program of the Key Discipline in Ecology (0713).