Xilithus wangi, Mu, Yannan & Zhang, Feng, 2023

Mu, Yannan & Zhang, Feng, 2023, Further additions to the guardstone spider fauna from China (Araneae: Phrurolithidae), Zootaxa 5338 (1), pp. 1-104 : 95-100

publication ID	https://doi.org/ 10.11646/zootaxa.5338.1.1
publication LSID	lsid:zoobank.org:pub:CAA37212-3008-43F4-98DE-94D7A3FFD3B6
DOI	https://doi.org/10.5281/zenodo.8283963
persistent identifier	https://treatment.plazi.org/id/364E87DE-862D-FFEA-5AA6-F9E9DADD2103
treatment provided by	Plazi
scientific name	Xilithus wangi
status	sp. nov.

Treatment

Xilithus wangi View in CoL sp. nov. (ƗOiẇdzff)

Figs 82–84 View FIGURE 82 View FIGURE 83 View FIGURE 84

Type material. Holotype ♁, CHINA: Sichuan Province, Aba Tibetan and Qiang Autonomous Prefecture , Mao County, Mountain Ecosystem Positioning Station (31°41.539´N, 103°53.809´E, 1885 m a.s.l.), 26 May 2015, leg. Luyu Wang. GoogleMaps

Paratypes: 2 ♁ 2 ♀, with same data as holotype GoogleMaps .

Etymology. The specific name is taken from the family name of Luyu Wang, the collector of this new species.

Diagnosis. This new species resembles X. pseudostella ( Fu, Jin & Zhang, 2014) in having a similarly shaped embolus and large epigynal atrium, but can be recognized by: 1) the wider and shorter prolateral tegular apophysis (vs thin and long, cf. Fig. 83B View FIGURE 83 and fig. 4B in Fu et al. [2014]), 2) the absence of a retroventral tibial apophysis (vs presence, cf. Fig. 83B, C View FIGURE 83 and fig. 4B, C in Fu et al. [2014]), and 3) the smaller and rectangular-shaped bursa (vs large and oval, cf. Fig. 83G View FIGURE 83 and fig. 4E in Fu et al. [2014]).

Description. Male (Holotype): total length 3.26, carapace 1.62 long, 1.44 wide; abdomen 1.64 long, 1.23 wide. Eye sizes and interdistances:AME 0.10, ALE 0.09, PME 0.13, PLE 0.10; AME–AME 0.04, AME–ALE 0.01, ALE– ALE 0.24, PME–PME 0.06, PME–PLE 0.06, PLE–PLE 0.37, ALE–PLE 0.05. EAW 0.52, CRW 0.82, EAW/CRW 0.65, CRW/CW 0.56. MOA 0.27 long, anterior width 0.22, posterior width 0.25. CH 0.15, CH /AME 1.50. Labium 0.22 long, 0.27 wide. Sternum 0.93 long, 0.89 wide. Leg measurements: Ⅰ 5.78 (1.59, 0.62, 1.53, 1.26, 0.78), II 4.83 (1.36, 0.54, 1.14, 1.08, 0.71), III 4.22 (1.16, 0.49, 0.84, 1.06, 0.67), IV 6.30 (1.73, 0.56, 1.40, 1.67, 0.94). Spination: femora I–IV d 1, femur Ⅰ pl 3, femur II pl 1, tibia Ⅰ pv 7 rv 7, tibia II pv 7 rv 6, metatarsus Ⅰ–II pv 4 rv 3.

Coloration. Carapace red brown, with several shapes resembling flowing water droplets beside fovea. Abdomen lighter color than carapace, with large dorsal scutum covered nearly entire abdomen ( Fig. 82A, B View FIGURE 82 ).

Palp as in Figs 83A–E View FIGURE 83 , 84A–C View FIGURE 84 . Retrolateral tibial apophysis base wide, narrower tip digit-shaped and curved towards cymbium; retroventral tibial apophysis absent. Tegulum wider than cymbium, pyriform-shaped; tegular apophysis absent. Sperm duct indistinct, tapering from retrolateral of tegulum to embolus. Embolus long, needle-like, transverse but curved upwards at end. Conductor absent.

Female (Paratype): total length 4.41, carapace 1.85 long, 1.68 wide; abdomen 2.56 long, 1.63 wide. Eye sizes and interdistances: AME 0.11, ALE 0.14, PME 0.11, PLE 0.11; AME–AME 0.04, AME–ALE 0.01, ALE–ALE 0.28, PME–PME 0.08, PME–PLE 0.06, PLE–PLE 0.39, ALE–PLE 0.08. EAW 0.58, CRW 0.90, EAW/CRW 0.64, CRW/CW 0.54. MOA 0.29 long, anterior width 0.25, posterior width 0.29. CH 0.15, CH /AME 1.36. Labium 0.22 long, 0.31 wide. Sternum 1.14 long, 1.07 wide. Leg measurements: Ⅰ 7.03 (1.91, 0.66, 1.95, 1.60, 0.91), II 5.91 (1.63, 0.62, 1.48, 1.29, 0.89), III 5.01 (1.34, 0.57, 0.99, 1.30, 0.81), IV 7.72 (2.10, 0.65, 1.79, 2.07, 1.11). Spination: femora I–IV d 1, femora Ⅰ–II pl 3, tibia Ⅰ pv 7 rv 8, tibia II pv 7 rv 5, metatarsus Ⅰ pv 4 rv 4, metatarsus II pv 4 rv 3. Other characters as for male, except dorsal scutum absent, color darker and body larger ( Fig. 82C, D View FIGURE 82 ).

Epigyne as in Figs 83F–G View FIGURE 83 , 84D–E View FIGURE 84 .Epigynal plate weakly sclerotized,with pair of shallow concavities.Copulatory openings small, located at anterior of atrium. Copulatory ducts slender, slightly curved. Bursa nearly rectangular. Glandular appendages mastoid-shaped. Connecting tubes short, wider than copulatory ducts. Spermathecae globular, widely separated. Fertilization ducts located at anterior margin of spermathecae.

Distribution. China (Sichuan Province).