Biodiversity Data Journal : Taxonomy & Inventories
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Taxonomy & Inventories
A new species of Otacilia Thorell, 1897 (Araneae, Phrurolithidae) from Yintiaoling National Nature Reserve, Chongqing, China
expand article infoChangbin Zheng‡, Yannan Mu§
‡ Management Center of Yintiaoling National Nature Reserve, Chongqing, China
§ Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Life Sciences, Southwest University, Chongqing, China
Corresponding author: Yannan Mu (15188605531@163.com)
Academic editor: Yanfeng Tong
Received: 26 Mar 2024 | Accepted: 18 Apr 2024 | Published: 25 Apr 2024
© 2024 Changbin Zheng, Yannan Mu
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: Zheng C, Mu Y (2024) A new species of Otacilia Thorell, 1897 (Araneae, Phrurolithidae) from Yintiaoling National Nature Reserve, Chongqing, China. Biodiversity Data Journal 12: e124006. https://doi.org/10.3897/BDJ.12.e124006
ZooBank: urn:lsid:zoobank.org:pub:56FC1044-DCD7-4A38-A980-DD523940C1E2
 Open Access

Abstract

Background

Phrurolithidae is a family of spiders with 395 species belonging to 26 genera distributed worldwide, of which 205 species belong to 17 genera was recorded in China.

New information

A new species of the genus Otacilia Thorell, 1897 is described from Yintiaoling National Nature Reserve, Chongqing, China. Diagnosis, morphological description, photos of the habitus and genitalia of the new species are provided.

Keywords

Dionycha, morphology, new species, taxonomy

Introduction

Otacilia Thorell, 1897, the largest genus of family Phrurolithidae, contains 137 species and is distributed in East Asia and Southeast Asia; amongst them, 114 species were reported in China (World Spider Catalog 2024). The species and studies of Otacilia have accelerated considerably during past decade (Liu et al. 2020, Liu et al. 2022, Mu and Zhang 2021, Mu et al. 2022, Mu and Zhang 2023). Some revisionary works in recent years have reduced the complexity of Otacilia by assigning species to newly-established genera (Liu et al. 2020, Zamani and Marusik 2020, Kamura 2021, Liu et al. 2022, Mu and Zhang 2022, Mu and Zhang 2023), which greatly promoted the study of Otacilia. While examining specimens collected from Yintiaoling National Nature Reserve, one new Otacilia species has been discovered and is described here: Otacilia wuxi sp. nov.

Materials and methods

The specimen was preserved in 75% ethanol and was examined, illustrated, photographed and measured using a Leica M205A stereomicroscope, equipped with a drawing tube, a Leica DFC450 Camera and LAS software (Ver. 4.6). Male pedipalp was examined and illustrated after being dissected. Eye sizes were measured as the maximum dorsal diameter. Leg measurements are shown as: total length (femur, patella and tibia, metatarsus, tarsus). All measurements are in millimetres. Specimens examined here are deposited in the Collection of Spiders, School of Life Sciences, Southwest University, Chongqing, China (SWUC).

Abbreviations used in the text: ALE–anterior lateral eye; AME–anterior median eye; PLE–posterior lateral eye; PME–posterior median eye; MOA–median ocular area; pv–proventral; rv–retroventral.

Taxon treatment

Otacilia wuxi Zheng & Mu sp. nov.

Material   Download as CSV 
Holotype:
  1. scientificName:
    Otacilia wuxi
    ; order:
    Araneae
    ; family:
    Phrurolithidae
    ; genus:
    Otacilia
    ; country:
    China
    ; stateProvince:
    Chongqing
    ; county:
    Wuxi
    ; locality:
    Yintiaoling National Nature Reserve, Baiguo forest farm, Qinglong pool
    ; verbatimElevation:
    1155
    ; verbatimLatitude:
    31°30′49.88″N
    ; verbatimLongitude:
    109°49′23.60″E
    ; year:
    2022
    ; month:
    9
    ; day:
    2
    ; individualCount:
    1
    ; sex:
    male
    ; lifeStage:
    adult
    ; institutionID:
    the Collection of Spiders, Southwest University
    ; institutionCode:
    SWUC
    ; occurrenceID:
    73DFCC07-5E15-5A57-93EB-2E7BD54AEB5E

Description

Male: total length 5.01, carapace 2.19 long, 1.91 wide; abdomen 2.59 long, 1.67 wide. Eye sizes and interdistances: AME 0.14, ALE 0.15, PME 0.11, PLE 0.13, AME–AME 0.04, AME–ALE 0.02, PME–PME 0.16, PME–PLE 0.09, ALE–PLE 0.15. MOA 0.37 long, anterior width 0.30, posterior width 0.42. Clypeal height 0.19. Chelicerae with three promarginal and eight retromarginal teeth. Measurements of legs: Ⅰ 8.86 (2.34+3.44+2.00+1.08), Ⅱ 7.05 (1.87+2.59+1.55+1.04), Ⅲ 6.18 (1.70+1.93+1.58+0.97), Ⅳ 9.46 (2.52+2.95+2.62+1.37). Spination: tibia Ⅰ pv 8 rv 8, tibia Ⅱ pv 7 rv 7, metatarsus Ⅰ pv 4 rv 4, metatarsus Ⅱ pv 3 rv 3. Legs yellow. Carapace yellow, with several indistinct shapes resembling flowing water droplets beside fovea. Abdomen yellow, with a small, thin dorsal scutum and irregular black pattern anterior and four black chevron stripes posterior (Fig. 1A).

Figure 1.  

Otacilia wuxi sp. nov., male, holotype. A habitus; B left palp, ventral view; C same, prolateral view; D same, retrolateral view. Abbreviations: C—conductor; DTA—dorsal tibial apophysis; E—embolus; FA—femoral apophysis; PTA—prolateral tibial apophysis; SD—sperm duct; TA—tegular apophysis.

Palp. Femoral apophysis high, located at middle part of femur, well-developed (Fig. 1C and D). Dorsal tibial apophysis long and large, strongly curved as semi-elliptic, base wide, tapering from middle to tip (Fig. 1C and D); prolateral tibial apophysis distinct (Fig. 1B). Tegulum bean-shaped, wider than cymbium; tegular apophysis semicircular. Conductor membranous (Fig. 1B). Sperm duct obvious, tapering from retrolateral of tegulum to embolus. Embolus long, needle-like, strongly curved retrolaterally from basal part (Fig. 1B).

Female: unknown.

Diagnosis

This new species resembles O. shaoyao Mu & Zhang, 2023 in having a similar shaped embolus and tegular apophysis, but can be recognised by: 1) the absent retrolateral tibial apophysis (vs. palmate-shaped, cf. Fig. 1B and fig. 47 in Mu and Zhang (2023)), 2) the long and semi-elliptic dorsal tibial apophysis (vs. absence, cf. Figs. 1C and D and fig. 47 in Mu and Zhang (2023)).

Etymology

The specific name is derived from the type locality; noun.

Distribution

Known only from the type locality (China: Chongqing).

Remarks

The specimen of this new species was collected by a Malaise trap built in the forest; however, nothing was found through sifting leaf litter. This new species is similar to O. ailan by lacking retrolateral tibial apophysis (Mu and Zhang 2023). However, this new species has great differences with O. ailan, such as the long embolus and dorsal tibial apophysis (both short in O. ailan), the absence of cymbium apophysis (presence in O. ailan), the ventral tibial protuberance indistinct (distinct ventral tibial apophysis) and the well-developed femoral apophysis (punctiform in O. ailan).

Acknowledgements

Many thanks to three reviewers (Feng Zhang and two anonymous reviewers) for their valuable comments that greatly improved the manuscript. Many thanks are given to Dr ZhiSheng Zhang and Luyu Wang, Ms. Piao Liu and Mr. Yu Zhang (Southwest University) for their assistance during the fieldwork and collection.

References

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