Otacilia ovata, Fu, Lina, Zhang, Zhisheng & Zhang, Feng, 2016

Fu, Lina, Zhang, Zhisheng & Zhang, Feng, 2016, New Otacilia species from Southwest China (Araneae: Phrurolithidae), Zootaxa 4107 (2), pp. 197-221 : 212-215

Otacilia ovata sp. nov.

Figs 12 A–H, 13A–E

Type material. Holotype ♂, China, Sichuan Province, Baoxing County, Fengtongzhai Town, Yanjing Village, 30°32.321′N, 102°55.273′E, 23 May 2015, Zhizhong Gao leg. Paratypes: 2♂, 1♀, same data as for holotype.

Etymology. The species name is derived from the Latin word ‘ ovatus ’, and refers to the oval, egg-shaped bursae; adjective.

Diagnosis. The new species is similar to O. pseudostella ( Fu et al. 2014: 488, figs 3A–G, 4A–E), but can be distinguished from the latter by: 1) a short E (longer in O. pseudostella ); 2) PEA sharp (relatively blunt in O. pseudostella ); 3) oval BU located posteriorly (pear-like and located anteriorly in O. pseudostella ); 4) CO located centrally in the concavity (anteriorly, concealed by the margin of concavity in O. pseudostella ). The new species is also similar to O. acuta sp. nov. ( Figs 14–15 ), but can be distinguished from the latter by: 1) bulb with a sharp PEA prolaterally, directed to 10 o’clock (pointed ventrally in O. acuta sp. nov.); 2) palpal tibia with one broad RTA (with two distinct, thin apophyses with the same length in O. acuta sp. nov.); 3) BU oval, located posteriorly (relatively round, located anteriorly in O. acuta sp. nov.).

Description. Male ( Fig. 12 A). Total length 2.55–3.12 (n=3). Holotype: body 3.12 long; carapace 1.56 long, 1.37 wide; abdomen 1.52 long, 1.14 wide. Carapace yellowish brown. Eyes sizes and interdistances: AME 0.09, ALE 0.11, PME 0.07, PLE 0.09; AME–AME 0.05, AME–ALE 0.01, PME–PME 0.09, PME–PLE 0.07. MOA 0.21 long, front 0.21 wide, back 0.23 wide. Clypeus 0.08 high. Cheliceral promargin with three well-separated teeth and retromargin with two teeth close to each other. Labium and gnathocoxae brown. Legs light brown. Leg measurements: leg I 5.91 (1.78, 0.41, 1.67, 1.42, 0.63), II 4.64 (1.28, 0.42, 1.21, 1.00, 0.73), III 3.97 (1.05, 0.36, 0.89, 1.01, 0.66), IV 6.10 (1.69, 0.48, 1.47, 1.54, 0.92). Abdomen brown, anterior half with a large dorsal scutum, occupying nearly 9/10 of abdomen length; posterior half without distinct chevron-shaped markings dorsally. Venter grey.

Palp ( Figs 12 A–H, 13A–E): RTA with broad base bifurcated into thumb-like tip and triangular apophysis. Cymbium ventrally with several hairs around E tip. E beak-like, prolaterally with sharp PEA. SD sclerotized. Conductor membranous, sharp, originating from E base.

Female ( Fig. 12 B). Total length 3.74 (n=1). One paratype: body 3.74 long; carapace 1.68 long, 1.54 wide; abdomen 2.02 long, 1.28 wide. Carapace brown. Eyes sizes and interdistances: AME 0.10, ALE 0.11, PME 0.07, PLE 0.08; AME–AME 0.05, AME–ALE 0.02, PME–PME 0.13, PME–PLE 0.07. MOA 0.26 long, front 0.23 wide, back 0.27 wide. Clypeus 0.09 high. Leg measurements: I 6.01 (1.65, 0.49, 1.72, 1.37, 0.78); II 5.10 (1.49, 0.38, 1.29, 1.18, 0.76); III 4.45 (1.26, 0.42, 0.91, 1.19, 0.67); IV 6.59 (1.79, 0.53, 1.57, 1.81, 0.89). Abdomen dark grey dorsally, anterior half without dorsal scutum; posterior half with three chevron-shaped markings dorsally.

Epigyne ( Figs 12 C–D, 13D–E): CO small, located in large, shallow concavity anteriorly ( Figs 12 C, 13D), widely separated. Concavity with distinct anterior margin. CD thick and short, separated by two transparent BU, oval, located centrally; CD as long as BU. SP small, widely separated, with similar diameter to CD, located posteriorly. FD originating anteriorly from SP.

Distribution. Known only from the type locality, Sichuan, China ( Fig. 18 ).

Figures

FIGURE 12. Otacilia ovata sp. nov., holotype male (A, E – H) and paratype female (B – D). A. Male habitus, dorsal; B. Female habitus, dorsal; C. Epigyne, ventral; D. Vulva, dorsal; E. Palp, dorsal; F. Same, prolateral; G. Same, ventral; H. Same, retrolateral. Scale bars: 1 mm (A – B); 0.2 mm (C – H).

FIGURE 14. Otacilia acuta sp. nov., holotype male (A, E – G) and paratype female (B – D). A. Male habitus, dorsal; B. Female habitus, dorsal; C. Epigyne, ventral; D. Vulva, dorsal; E. Palp, prolateral; F. Same, ventral; G. Same, retrolateral. Scale bars: 1 mm (A – B); 0.2 mm (C – G).

FIGURE 15. Otacilia acuta sp. nov., holotype male (A – C) and paratype female (D – E). A. Palp, prolateral; B. Same, ventral; C. Same, retrolateral; D. Epigyne, ventral; E. Vulva, dorsal. Scale bars: 0.25 mm (A – C); 0.5 mm (D – E).

FIGURE 18. Distribution of new species of the genus Otacilia from Southwest China.