Phrurolithus celatus, Fu & Chen & Zhang, 2016

Fu, Lina, Chen, Huiming & Zhang, Feng, 2016, New Phrurolithus species from China (Araneae, Phrurolithidae), Ecologica Montenegrina 7, pp. 270-290 : 272-274

Phrurolithus celatus sp. nov.

Figs 1A–G, 2A–E

Type material. Holotype ♂, China, Chongqing Municipality, Jiangjin District, Simian Mount Nature Reserve , Dawopu , Chaqi Hill (28°34.775′N, 106°21.116′E), 21 March 2012, Luyu WANG leg .; Paratypes: 1♀, same data as for holotype, 10 November 2011, Zongxu LI leg .; 1♀, Dawopu (28°34.302′N, 106°21.195′E), 20 March 2012, Luyu WANG leg .; 1♂, Dawopu, Chaqi Hill (28°34.775′N, 106°21.116′E), 6 March 2013, Xuankong JIANG leg .; 1♂, Chongqing Municipality, Nanchuan District, Jinshan Town , Lanbajing (29°00.535′N, 107°08.681′E), 10 March 2013, Xiangwei MENG leg .

Etymology. The specific name is derived from the Latin word ‘ celatus ’, referring to the COs concealed posteriorly; adjective.

Diagnosis. The female of the new species is similar to P. qiqiensis ( Yin et al., 2004: 272, figs 8–10) in having two similar bursae, but can be distinguished from it by: 1) fertilization ducts curved (not curved in the latter); 2) spermathecae oval (not oval in the latter). The new species is similar to P. bifidus ( Yin et al., 2004: 271, figs 1–7) in having a similar RTA, but can be distinguished from it by: 1) lower location of COs (high in the latter); 2) bursae larger (small in the latter); 3) spermathecae oval (not oval in the latter); 4) embolar base with a long, thin, membranous conductor (absent in the latter).

Description. Male ( Fig. 1A). Total length 2.39–2.56 (n=3). Holotype: body length 2.41; carapace 1.14 long, 0.96 wide; abdomen 1.17 long, 0.83 wide. Carapace yellowish, abruptly narrow forwards; fovea longitudinal, distinct. Eyes sizes and interdistances: AME 0.06, ALE 0.08, PME 0.05, PLE 0.06; AME– AME 0.02, AME–ALE 0.01, PME–PME 0.06, PME–PLE 0.06. MOA 0.16 long, front 0.13 wide, back 0.16 wide. Clypeus 0.09 high. Chelicerae have two strong anterior bristles, with three well-separated promarginal and five retromarginal closely related teeth. Labium and gnathocoxae wider than long, yellow. Legs light yellow. Measurements of legs: leg I 3.99 (1.08, 0.35, 1.12, 0.93, 0.51), II 3.46 (0.99, 0.32, 0.87, 0.76, 0.52), III 3.01 (0.82, 0.28, 0.61, 0.76, 0.54), IV 4.24 (1.22, 0.34, 0.92, 1.12, 0.64). Leg formula: 4123. Femora I–IV basally with one dorsal spine, femur I with three prolateral spines and femur II with one prolateral spine; tibia I with six pairs of ventral spines, tibia II with six proventral spines and five retroventral spines; metatarsus I with four proventral spines and three retroventral spines, metatarsus II with four proventral spines and three retroventral spines. Abdomen oval, grey, anterior half with a small dorsal scutum, posterior half light grey with several chevron-like stripes dorsally.

Palp ( Figs 1C–E, 2A–C). BTA, RTA long relatively with the same length. Embolus thin apically, originating prolaterally, with a long conductor near embolar base. Sperm duct U-shaped. TA small.

Female ( Fig. 1B). Total length 2.33–2.85 (n=4). One paratype: body 2.83 long; carapace 1.13 long, 0.97 wide; abdomen 1.63 long, 1.06 wide. Carapace light yellowish anteriorly; fovea longitudinal. Eyes sizes and interdistances: AME 0.06, ALE 0.08, PME 0.05, PLE 0.07; AME–AME 0.02, AME–ALE 0.01, PME– PME 0.08, PME–PLE 0.05. MOA 0.15 long, front 0.13 wide, back 0.16 wide. Clypeus 0.08 high. Leg measurements: I 3.69 (0.98, 0.31, 1.04, 0.91, 0.45); II 3.10 (0.84, 0.27, 0.82, 0.71, 0.46); III 2.87 (0.79, 0.25, 0.61, 0.69, 0.53); IV 4.24 (1.12, 0.38, 0.97, 1.13, 0.64). Leg formula: 4123. Femora I–IV with one dorsal spine. Femur I with three prolateral spines and femur II with two prolateral spines; tibia I with seven proventral spines or eight retroventral spines, tibia II with seven proventral spines and six retroventral spines; metatarsus I with four pairs of ventral spines, metatarsus II with four proventral spines and three retroventral spines. Abdomen light grey dorsally with several chevron-like stripes dorsally.

Epigyne ( Figs 1F–G, 2D–E). COs small, posteriorly, close to each other. Short CD connecting with two large transparent BU anteriorly. Spermathecae egg-like, located posteriorly.

Distribution. China (Chongqing).