Otacilia pyriformis, 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 : 203-204

Otacilia pyriformis sp. nov.

Figs 3 A–H, 4A–E

Type material. Holotype ♂, China, Chongqing Municipality, Chengkou County, Xiuqi Town, Xumu Village, 31°53.166′N, 108°47.214′E, 27 March 2013, Xuankong Jiang leg. Paratypes: 2♂, 7♀, same data as holotype; 4♀, Chongqing Municipality, Chengkou County (31°52.286′N, 108°44.508′E), Xiuqi Town, Sanhe Village (31°53.169′N, 108°47.218′E), 26 March 2013, Xuankong Jiang leg.; 1♀, Chongqing Municipality, Chengkou County, Dongan Town, Xingtian Village, 31°46.812′N, 109°06.368′E, 31 March 2013, Xuankong Jiang leg.

Etymology. The species name is derived from the Latin word ‘ pyriformis ’, meaning pear-like, and refers to the shape of the bulb in ventral view; adjective.

Diagnosis. The new species is similar to O. liupan ( Hu & Zhang 2011: 61, figs 1–7) in having a similar bulb and a broad MP, but can be distinguished from O. liupan by: 1) TA absent (present in O. liupan ); 2) CD curved and thick (straight and thinner in O. liupan ); 3) BU large and kidney-shaped (smaller and round in O. liupan ). The new species is similar to O. papilion sp. nov. ( Figs 5–6 ), but can be distinguished by: 1) hook-shaped E (sickle-shaped in O. papilion sp. nov.); 2) RTA with a beak-like tip (tip tapering in O. papilion sp. nov.); 3) CD straight (curved in O. papilion sp. nov.); 4) MP present (absent in O. papilion sp. nov.).

Description. Male ( Fig. 3 A). Total length 3.16–3.67 (n=3). Holotype: body 3.59 long; carapace 1.62 long, 1.44 wide; abdomen 1.76 long, 1.16 wide. Carapace yellowish brown. Eyes sizes and interdistances: AME 0.09, ALE 0.10, PME 0.08, PLE 0.07; AME–AME 0.04, AME–ALE 0.01, PME–PME 0.11, PME–PLE 0.07. MOA 0.26 long, front 0.21 wide, back 0.28 wide. Clypeus 0.11 high. Cheliceral promargin with three well-separated teeth and retromargin with five teeth close to each other. Labium and gnathocoxae brown. Legs light yellow. Leg measurements: leg I 5.99 (1.62, 0.43, 1.80, 1.42, 0.72), II 4.98 (1.37, 0.41, 1.33, 1.16, 0.71), III 4.36 (1.15, 0.47, 0.94, 1.12, 0.68), IV 6.67 (1.79, 0.52, 1.62, 1.82, 0.92). Abdomen dark grey, anterior half with a small dorsal scutum, occupying nearly 1/10 of abdomen length; posterior half dark brown and with six bright chevron-shaped markings dorsally. Venter yellowish brown.

Palp ( Figs 3 E–H, 4A–C): RTA with broad base, beak-like terminal apophysis and thumb-like apophysis dorsally. Cymbium triangular dorsally, ventrally with several setae around E tip. E hook-shaped apically. SD obviously sclerotized. Conductor membranous, narrow, close to E base.

Female ( Fig. 3 B). Total length 3.72–4.45 (n=9). One paratype: body 3.96 long; carapace 1.65 long, 1.50 wide; abdomen 2.26 long, 1.45 wide. Carapace yellowish brown, abruptly narrow anteriorly. Eyes sizes and interdistances: AME 0.08, ALE 0.09, PME 0.09, PLE 0.08; AME–AME 0.05, AME–ALE 0.02, PME–PME 0.12, PME–PLE 0.08. MOA 0.25 long, front 0.19 wide, back 0.28 wide. Clypeus 0.10 high. Leg measurements: I 5.84 (1.60, 0.47, 1.83, 1.36, 0.58); II 4.97 (1.42, 0.43, 1.35, 1.08, 0.69); III 4.48 (1.39, 0.45, 0.95, 1.06, 0.63); IV 6.34 (1.78, 0.46, 1.44, 1.85, 0.81). Abdomen light grey, without dorsal scutum dorsally, markings as in male.

Epigyne ( Figs 3 C–D, 4D–E): MP broad anteriorly and converging posteriorly. CO dark, located centrally, connected to a pair of shallow concavities anteriorly ( Figs 3 C, 4D). Thick and straight CD connected to two large, transparent, kidney-shaped BU. SP small, located posteriorly, with almost the same diameter as CD. FD originating anteriorly from SP.

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

Figures

FIGURE 3. Otacilia pyriformis 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 5. Otacilia papilion sp. nov., holotype male (A, E – I) 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: 0.5 mm (A – B, I); 0.2 mm (C – G); 0.1 mm (H).

FIGURE 6. Otacilia papilion 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.