Otacilia aurita, 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 : 207-209

Otacilia aurita sp. nov.

Figs 7 A–G, 8A–E

Type material. Holotype ♂, China, Sichuan Province, Miyi County, Baipo Town, 27°7.135′N, 101°54.896′E, 13 May 2015, Zhizhong Gao leg. Paratypes: 4♂, 1♀, same data as holotype.

Etymology. The species name is derived from the Latin word ‘ auritus ’, and refers to the ear-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 species by: 1) a relatively short E (longer in O. pseudostella ); 2) PEA sharp (relatively blunt in O. pseudostella ); 3) DTA long, spine-like (shorter, with a wide base and a sharp tip in O. pseudostella ); 4) BU ear-shaped (pear-like in O. pseudostella ); 5) CO located anteriorly, concealing the margin of the concavity (CO more posterior, located in the center of the concavity in O. pseudostella ); 6) short CD (longer in O. pseudostella ). The new species is also similar to O. digitata sp. nov. ( Fig. 9 ), but can be distinguished from the latter species by: 1) palp with two tibial apophyses (only one in O. digitata sp. nov.); 2) PEA long, spine-like (relatively shorter, triangular in O. digitata sp. nov.); 3) TA antero-retrolaterally located, small (larger in O. digitata sp. nov.).

Description. Male ( Fig. 7 A). Total length 2.25–3.06 (n=7). Holotype: body 2.87 long; carapace 1.31 long, 1.12 wide; abdomen 1.53 long, 0.92 wide. Carapace dark brown. Eyes sizes and interdistances: AME 0.06, ALE 0.09, PME 0.06, PLE 0.07; AME–AME 0.05, AME–ALE 0.01, PME–PME 0.06, PME–PLE 0.05. MOA 0.20 long, front 0.17 wide, back 0.18 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 brown. Leg measurements: leg I 4.70 (1.27, 0.36, 1.29, 1.07, 0.71), II 3.89 (1.12, 0.29, 0.95, 0.92, 0.61), III 3.39 (0.91, 0.32, 0.72, 0.87, 0.57), IV 4.95 (1.33, 0.42, 1.13, 1.29, 0.78). Abdomen dark grey, anterior half with large dorsal scutum, nearly occupying nearly 4/5 of abdomen length, posterior half without distinct chevron-shaped markings dorsally. Venter yellow brown.

Palp ( Figs 7 E–G, 8A–C): DTA long, sharp distally, spine-like. RTA short. E sharp apically, with membranous base ventrally and spine-like PEA prolaterally. SD sclerotized. TA antero-retrolaterally located, small.

Female ( Fig. 7 B). Total length 3.12 (n=1). One paratype: body 3.12 long; carapace 1.26 long, 1.14 wide; abdomen 1.82 long, 1.19 wide. Carapace grey, abruptly narrow anteriorly; fovea longitudinal. Eyes sizes and interdistances: AME 0.07, ALE 0.09, PME 0.06, PLE 0.07; AME–AME 0.05, AME–ALE 0.01, PME–PME 0.07, PME–PLE 0.06. MOA 0.20 long, front 0.18 wide, back 0.19 wide. Clypeus 0.07 high. Leg measurements: I 3.83 (1.10, 0.31, 0.98, 0.88, 0.56); II 3.61 (0.96, 0.33, 0.88, 0.83, 0.61); III 3.16 (0.83, 0.29, 0.68, 0.79, 0.57); IV 4.84 (1.27, 0.42, 1.16, 1.33, 0.66). Abdomen dark grey, without dorsal scutum or chevron-shaped markings dorsally.

Epigyne ( Figs 7 C–D, 8D–E): Two small CO located separately in pair of shallow concavities posteriorly ( Figs 7 C, 8D). CD thin and short, connected to two transparent, ear-shaped BU. SP oval, located posteriorly. FD arising anteriorly from SP.

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

Figures

FIGURE 7. Otacilia aurita 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 9. Otacilia digitata sp. nov., holotype male (A – G). A. Male habitus, dorsal view; B. Palp, prolateral; C. Same, ventral; D. Same, retrolateral; E. Palp, prolateral; F. Same, ventral; G. Same, retrolateral. Scale bars: 1.00 mm (A); 0.2 mm (B – D); 0.25 mm (E – G).

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