Otacilia yusishanica Liu, 2020

Liu, Ke-ke, Ying, Yuan-hao, Xiao, Yu-xin, Yan, Jing & Xiao, Yong-hong, 2020, Eight new species of Otacilia (Araneae: Phrurolithidae) from southern China, ZooKeys 979, pp. 1-33 : 1

publication ID	https://dx.doi.org/10.3897/zookeys.979.56273
publication LSID	lsid:zoobank.org:pub:9FCC47DB-C8AA-4B3F-89A2-3FD3B69A02A9
persistent identifier	https://treatment.plazi.org/id/0CD9F210-2A0D-4292-94F6-76F55F8EA7D2
taxon LSID	lsid:zoobank.org:act:0CD9F210-2A0D-4292-94F6-76F55F8EA7D2
treatment provided by	ZooKeys by Pensoft
scientific name	Otacilia yusishanica Liu
status	sp. nov.

Treatment

Otacilia yusishanica Liu sp. nov. Figures 15 View Figure 15 , 16 View Figure 16 , 17 View Figure 17 , 22 View Figure 22

Type material.

Holotype: ♂, China, Jiangxi Province, Ji’an City, Xiajiang County, Yusi Mt., 27°33'05.52"N, 115°16'16.88"E, 202 m, 7 October 2019, leg. Ke-ke Liu et al. Paratypes: 5 ♂, 4 ♀, 4 juveniles, with same data as holotype.

Etymology.

The specific name refers to the type locality, Yusishan; adjective.

Diagnosis.

The males of the new species are similar to Otacilia acutangula Liu, 2020 in having a thick hook-shaped embolus, a C-shaped sperm duct and a finger-like retrolateral tibial apophysis (see Liu et al. 2020: 13, fig. 7C-F), but can be separated from it by the retrolateral tibial apophysis with a straight tip in retrolateral view (Figs 15D, E View Figure 15 , 16A, B, D View Figure 16 ) (vs. with a slightly curved tip). The females resemble O. acutangula in having small bursae and thin connecting tubes (see Liu et al. 2020: 13, fig. 8C, D), but can be distinguished from it by the rectangular median septum (Fig. 17C View Figure 17 ) (vs. triangular) and the widely separated spermathecae (Fig. 17D View Figure 17 ) (vs. proximate spermatheca).

Description.

Male (holotype). Habitus as in Fig. 15A, B View Figure 15 . Total length 3.29, carapace 1.48 long, width 1.21 wide. Eye sizes and interdistances: AME 0.07, ALE 0.08, PME 0.06, PLE 0.07, AME-AME 0.05, AME-ALE 0.02, PME-PME 0.11, PME-PLE 0.06, AME-PME 0.09, AME-PLE 0.17, ALE-ALE 0.23, PLE-PLE 0.37, ALE-PLE 0.10. MOA 0.24 long, frontal width 0.20, posterior width 0.25. Chelicerae (Fig. 15A, B View Figure 15 ) with three promarginal (proximal largest, distal smallest) and six retromarginal teeth (distal larger, others equal in size). Sternum (Fig. 15B View Figure 15 ) longer than wide. Pedicel 0.28 long. Abdomen (Fig. 15A, B View Figure 15 ) 1.58 long, 0.92 wide. Leg measurements: I 6.45 (1.65, 0.51, 1.94, 1.53, 0.82); II 5.13 (1.28, 0.53, 1.39, 1.18, 0.75); III 4.35 (1.12, 0.46, 0.94, 1.18, 0.65); IV 7.05 (1.92, 0.57, 1.67, 1.89, 1.00). Leg spination (Fig. 15A, B View Figure 15 ): femora I-IV with one dorsal spine each; femora I pv1111, II pv11; tibiae I v2222222, II v2222222; metatarsi I v2222, II v222.

Colouration (Fig. 15A, B View Figure 15 ). Carapace yellow-brown, with irregular, dark yellow, radial strips mediolaterally. Fovea distinct, black. Chelicerae, endites, labium, and sternum yellow-brown. Legs yellow, without dark annulations. Abdomen dark brown, with pair of pale stripes located at posterior of dorsal scutum, three light chevron-shaped stripes in posterior part and one yellowish arc-shaped stripe in front of anal tubercle; venter with H-shaped blackish-brown stripe posteromedially, pair of sloping blackish-brown stripes posterolaterally and N-shaped blackish-brown stripe posteriorly.

Palp (Figs 15C-E View Figure 15 , 16 View Figure 16 ). Femoral apophysis well-developed, width more than half of its length. Patella unmodified. Retrolateral tibial apophysis small, less than tibia length, bending inward toward base of cymbium, with straight tip in retrolateral view. Sperm duct C-shaped, strongly sclerotized, around base of subterminal apophysis and embolus. Distal tegular apophysis, membranous, extruding retrolaterally, covering most of retrolateral tegular apophysis. Embolus spine-like, thick, with broad base and blunt apex, embolic groove narrowed.

Female (paratype). Habitus as in Fig. 17A, B View Figure 17 . Lighter than males. Total length 3.30, carapace 1.57 long, 1.35 wide. Eye sizes and interdistances: AME 0.07, ALE 0.06, PME 0.05, PLE 0.07, AME-AME 0.07, AME-ALE 0.04, PME-PME 0.10, AME-PME 0.10, AME-PLE 0.18, ALE-ALE 0.24, PLE-PLE 0.36, ALE-PLE 0.12. MOA 0.23 long, frontal width 0.19, posterior width 0.25. Chelicerae (Fig. 17A, B View Figure 17 ) with three promarginal (proximal largest, distal smallest) and five retromarginal teeth (distal largest, second smallest, all teeth with a same base). Pedicel 0.10 long. Abdomen (Fig. 17A, B View Figure 17 ) 1.63 long, 1.00 wide. Leg measurements (Fig. 17A, B View Figure 17 ): I 6.87 (1.87, 0.61, 2.05, 1.61, 0.73); II 5.00 (1.27, 0.47, 1.41, 1.15, 0.70); III 4.49 (1.16, 0.51, 0.99, 1.06, 0.77); IV 7.09 (1.82, 0.61, 1.73, 2.00, 0.93). Leg spination (Fig. 17A, B View Figure 17 ): femora I pv1111, II pv111; tibiae I v22222222, II v22222222; metatarsi I v2222, II v2222.

Colouration (Fig. 17A, B View Figure 17 ). Darker than males. Abdomen, venter with two pairs of dark brown stripes posteriorly, median one touching.

Epigyne (Fig. 17C, D View Figure 17 ). Epigynal plate bow-like, anterior margin weakly sclerotized, arc-shaped, medially with pair of hole-shaped copulatory openings, posteriorly with rectangular median septum. Copulatory ducts, glandular appendages, connecting tubes and spermathecae distinctly visible through integument in intact epigyne. Copulatory ducts between copulatory openings and glandular appendages, sloping laterally, broad, short, posteriorly with pair of small, oval, transparent bursae. Glandular appendages short, located on anterior of connecting tubes, near base of bursae. Connecting tubes slightly shorter than copulatory ducts, slightly curved forwards. Spermathecae slightly expanded, elongated, separated by mark of median septum. Fertilization duct short, directed anterolaterally.

Distribution.

Known only from the type locality in Jiangxi Province, China (Fig. 22 View Figure 22 ).