Otacilia pseudostella, Fu, Lina, Jin, Chi & Zhang, Feng, 2014

Fu, Lina, Jin, Chi & Zhang, Feng, 2014, Three new species of the genus Otacilia Thorell (Araneae: Phrurolithidae) from China, Zootaxa 3869 (4), pp. 483-492 : 487-488

Otacilia pseudostella sp. nov.

Figs 3–4

Type material. Holotype ♂, China, Gansu Province, Liangdang County, Heihe Forest Park (34°07′N, 106°32′E), 2 June 2011, leg. Luyu Wang.

Paratypes: 6♂ and 3♀, with same data as for holotype; 7♂ and 4♀, 1 June 2011, same locality and collector as for holotype; 1♂, Anhui Province, Qiyun Mountain (29°48′N, 118°0′E), 19 April 2011, leg. Luyu Wang; 1♂, Sichuan Province, Nanjiang County, Micang Mountain (32°43′N, 106°51′E), 19 May 2013, leg. Zhisheng Zhang.

Etymology. The specific name refers to the resemblance of the species to O. stella Kamura, 2004 ; noun.

Diagnosis. The new species is similar to O. stella in having a male palpal tibia with two retrolateral apophyses and two epigynal concavities. It differs from O. stella by the following characteristics: 1) BTA ( Fig. 4 B) much shorter and smaller; 2) embolus nearly extending to the edge of the cymbium ( Figs 3 C, 4B), whereas short in O. stella ; 3) tegulum narrow proximally while broad and rounded in O. stella ; 4) CO located in the anterior margin of the membranous windows, while located centrally in O. stella (see Kamura 2004: 88, figs 1–6). The new species also resembles O. vulpes Kamura, 2001 in having a similar RTA, but can be separated from the latter species by: 1) the male palp with a BTA and a RTA, while only with a very short RTA in O. vulpes ; and 2) spermathecae nearly parallel to each other ( Figs 3 F–G, 4D–E), while spermathecae posteriorly diverging in O. vulpes (see Kamura 2001: 51, figs 4–7).

Description. Male ( Fig. 3 A). Total length 2.88–3.17 (n=6). Holotype: body 3.15 long; carapace 1.57 long, 1.36 wide; abdomen 1.57 long, 1.04 wide. Carapace reddish brown, abruptly narrow anteriorly; fovea longitudinal. Diameter of eyes: AME 0.06, ALE 0.08, PME 0.06, PLE 0.07. Eye interdistances: AME–AME 0.04, AME–ALE 0.01, PME–PME 0.09, PME–PLE 0.07, ALE–PLE 0.08. MOA 0.20 long, front 0.19 wide, back 0.22 wide. Clypeus 0.09 high. Chelicerae blackish brown, with two bristles anteriorly; promargin of cheliceral furrow with two teeth, retromargin with two teeth near to each other. Labium and gnathocoxae brown. Legs and palps yellowish brown. Leg measurements: I 4.66 (1.28, 0.41, 1.36, 1.10, 0.51); II 3.81 (1.08, 0.40, 0.99, 0.90, 0.44); III 3.47 (0.87, 0.36, 0.76, 0.89, 0.59); IV 5.02 (1.29, 0.45, 1.30, 1.31, 0.67). Leg formula: 4123. Femora I–IV with only one dorsal spine. Femur I with three prolateral spines; 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. Dorsum of abdomen yellowish with several light blackish chevron-like markings posteriorly.

Palp ( Figs 3 B–D, 4A–C) as in diagnosis. Femoral apophysis located ventrally. BTA short, RTA wide basally and with pointed tip. Embolus long and curved. Tegulum broad, distally with two small triangular projections and prolaterally with a large pointed projection near embolar base. Bulb narrowed basally.

Female ( Fig. 3 E). Total length 4.24–5.21 (n=5). One paratype from Liangdang County: body 4.24 long; carapace 1.60 long, 1.42 wide; abdomen 2.40 long, 1.55 wide. Carapace brown, abruptly narrow anteriorly; fovea longitudinal. Diameter of eyes: AME 0.06, ALE 0.09, PME 0.07, PLE 0.09. Eye interdistances: AME–AME 0.05, AME–ALE 0.01, PME–PME 0.10, PME–PLE 0.07, ALE–PLE 0.09. MOA 0.22 long, front 0.19 wide, back 0.22 wide. Clypeus 0.11 high. Leg measurements: I 5.76 (1.56, 0.47, 1.58, 1.34, 0.81); II 4.52 (1.11, 0.43, 1.22, 1.04, 0.72); III 3.89 (1.15, 0.36, 0.80, 1.00, 0.58); IV 6.02 (1.66, 0.46, 1.43, 1.61, 0.86). Leg formula: 4123. Femora I–IV with one dorsal spine. Femur I with three prolateral spines, femur II with one prolateral spine; tibiae and metatarsi I and II with the same spination as male. Abdomen grey dorsally. Other characters as in male.

Epigyne ( Figs 3 F–G, 4D–E). Epigyne with a pair of shallow concavities covered with mating plugs (most specimens). COs small and widely separated, concealed by the margin of concavity. CDs connecting with two relatively large transparent bursae. Spermathecae small, ear-like, located posteriorly.

Distribution. China (Gansu, Anhui and Sichuan provinces) ( Fig. 6 ).

Figures

FIGURE 3. Otacilia pseudostella sp. nov., A. Male body, dorsal view; B. Male left palp, dorsal view; C. Same, ventral view; D. Same, retrolateral view; E. Female body, dorsal view; F. Epigyne, ventral view; G. Vulva, dorsal view.

FIGURE 4. Otacilia pseudostella sp. nov., A. Male left palp, dorsal view; B. Same, ventral view; C. Same, retrolateral view; D. Epigyne, ventral view; E. Vulva, dorsal view.

FIGURE 6. Distribution of O. fujiana sp. nov., O. pseudostella sp. nov. and O. zhangi sp. nov.