Otacilia digitata, 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 : 209

Otacilia digitata sp. nov.

Figs 9 A–G

Type material. Holotype ♂, China, Sichuan Province, Guangyuan City, Qingchuan County, Sanguo Town, Xiyanggou Natural Reserve, 32°31.754′N, 105°1.078′E, 4 May 2013, Xiangwei Meng leg.

Etymology. The specific name is from a Latin word ‘ digitatus ’, and refers to the finger-shaped RTA; adjective.

Diagnosis. The new species is similar to O. pseudostella ( Fu et al. 2014: 488, figs 3A–G, 4A–E), but can be distinguished by: 1) PEA short and sharp (longer and blunt in O. pseudostella ); 2) an E that is relatively short (longer in O. pseudostella ); 3) BTA absent (present in O. pseudostella ); 4) a finger-shaped RTA (with a wide base and sharp tip in O. pseudostella ). The new species is also similar to O. zhangi ( Fu et al. 2014: 490, fig 5A–F), but can be distinguished from it by: 1) PEA short and sharp (longer and blunt in O. zhangi ); 2) a relatively short E (longer in O. zhangi ); 3) a finger-shaped RTA (with a wide base and sharp tip in O. zhangi ). Female unknown.

Description. Male ( Fig. 9 A). Total length 3.02 (n=1). Holotype: body 3.02 long; carapace 1.44 long, 1.19 wide; abdomen 1.55 long, 1.05 wide. Carapace brown. Eyes sizes and interdistances: AME 0.07, ALE 0.09, PME 0.06, PLE 0.07; AME–AME 0.05, AME–ALE 0.02, PME–PME 0.08, PME–PLE 0.07. MOA 0.21 long, front 0.18 wide, back 0.24 wide. Clypeus 0.07 high. Cheliceral promargin with three well-separated teeth and retromargin with two teeth close to each other. Labium and gnathocoxae brown. Legs light yellow. Leg measurements: leg I 4.81 (1.34, 0.36, 1.37, 1.10, 0.64), II 4.08 (1.15, 0.31, 1.04, 0.96, 0.62), III 3.62 (1.02, 0.34, 0.73, 0.94, 0.59), IV 5.20 (1.37, 0.42, 1.28, 1.35, 0.78). Abdomen yellow brown, dorsal scutum covering whole dorsum, posterior half with three chevron-shaped markings dorsally. Venter yellow brown.

Palp ( Figs 9 B–G): With only one RTA, finger-shaped. E thin apically, prolaterally with thick, sharp PEA. SD sclerotized. TA originating antero-retrolaterally. Tegulum widest in middle part.

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

Figures

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.