Otacilia wuxi Zheng & Mu, 2024

Zheng, Changbin & Mu, Yannan, 2024, A new species of Otacilia Thorell, 1897 (Araneae, Phrurolithidae) from Yintiaoling National Nature Reserve, Chongqing, China, Biodiversity Data Journal 12, pp. 124006-124006 : 124006

Otacilia wuxi Zheng & Mu sp. nov.

Materials

Type status: Holotype. Occurrence: individualCount: 1; sex: male; lifeStage: adult; occurrenceID: 73DFCC07-5E15-5A57-93EB-2E7BD54AEB5E; Taxon: scientificName: Otacilia wuxi; order: Araneae ; family: Phrurolithidae ; genus: Otacilia ; Location : 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; Event : year: 2022; month: 9; day: 2; Record Level : institutionID: the Collection of Spiders , Southwest University ; institutionCode: SWUC

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. 1 A).

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

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 ).

Figures

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.