Otacilia liupan, Hu, Dong-Sheng & Zhang, Feng, 2011

Hu, Dong-Sheng & Zhang, Feng, 2011, Description of a new Otacilia species from China, with transfer of two species from the genus Phrurolithus (Araneae: Corinnidae), Zootaxa 2993, pp. 59-68 : 60-62

Otacilia liupan sp. nov.

( Figs 1–7 )

Material examined. Male holotype, China: Ningxia, Jingyuan County, Liupanshan Natural Reserve (E106°16', N35°23), Longtan Forest Farm, August 3, 2010, Dong-Sheng Hu leg. ( MHBU). Paratypes: six males and four females, same data as holotype, Guang-Xin Han and Yan-Qiu Peng leg. ( MHBU).

Etymology. The specific name is a noun in apposition, derived from the type locality.

Diagnosis. Among the congeners, this new species is very similar to Otacilia hengshan ( Song, 1990) in the shape of the genital organs, but can be distinguished from the latter by: (1) the relatively short embolus (tip not exceeding the retrolateral margin of cymbium) ( Fig. 4 ), while in the latter the embolus longer and exceeding the retrolateral margin of cymbium ( Fig. 11 ); (2) the long tegular process ( Figs 3, 4 ); (3) the presence of a small, more and less membranous process near embolic base ( Figs 2–4 ); (4) the short, wide branch of RTA ( Figs 2, 5 ); (5) the wide median plate of epigyne ( Fig. 6 ); (6) the distinctly long spermathecae ( Fig. 7 ).

Description. Male (holotype). Total body length 3.24. Carapace 1.55 long, 1.35 wide; abdomen 1.69 long, 1.00 wide. Carapace orange, darker in eye area, bulging, highest near thoracic groove; cervical groove and radial grooves brown; thoracic groove brown, longitudinal; black, thin edge along margin of carapace. Eyes in two transverse rows; AER recurved, PER slightly recurved from dorsal view, PER slightly wider than AER ( Fig. 1 ). Eyes measurements: AME 0.10, ALE 0.13, PME 0.13, PLE 0.10; AME–AME 0.05, AME–ALE 0.03, PME–PME 0.10, PME–PLE 0.08; MOA wider than long (0.28: 0.25), narrower anteriorly (0.20: 0.28). Clypeus higher than AME diameter. Chelicerae moderately long, yellowish brown, with three promarginal teeth and six retromarginal teeth; with two pairs of frontal spines, one pair short and the other pair long. Endites, labium and sternum orange. Endites longer than wide, with scopula and serrula on anterior margin. Labium wider than long, rounded distally. Sternum heart-shaped, truncated on anterior margin, pointed posteriorly, with sparse brown hairs. Legs orange, all femora with one dorsal spine. Femur I with four prolateral spines; tibia I with seven pairs of ventral spines; metatarsus I with four pairs of ventral spines. Femur II with two prolateral spines; tibia II with six pairs of ventral spines; metatarsus II with four pairs of ventral spines. Leg formula: 4123 ( Table 1).

Femur Patella Tibia Metatarsus Tarsus Total I 1.53 0.53 1.74 1.32 0.68 5.80 II 1.26 0.53 1.26 1.10 0.68 4.83 III 1.05 0.37 0.95 1.05 0.63 4.05 IV 1.58 0.42 1.53 1.74 0.89 6.16 Abdomen dorsally pale, with coriaceous dorsal scutum extending about one third of abdomen length, followed by four transverse bands; venter with a pair of short, light brown longitudinal bands in the middle.

Male palpus ( Figs 2–5 ) with a large RTA consisting of broad base and finger-shaped tip; tibia with a row of long spines distally; femur ventrodistally swollen and with an apophysis and concavity retrolaterally ( Fig. 3 ); tegulum convex; tegular process thin and long, almost paralleling the embolus; embolic base with a small, semimembranous process ( Fig. 4 ); embolus hook-shaped apically.

Female (one of paratypes). Total body length 4.05. Carapace 1.74 long, 1.42 wide; abdomen 2.31 long, 1.58 wide. Eyes measurements: AME 0.05, ALE 0.10, PME 0.08, PLE 0.08; AME–AME 0.08, AME–ALE 0.03, PME– PME 0.13, PME–PLE 0.08. MOA wider than long (0.28: 0.25), narrower anteriorly (0.20: 0.28). Leg formula: 4123 ( Table 2). Carapace, eyes, mouthparts and legs as in male. Abdomen lacking dorsal scutum.

Femur Patella Tibia Metatarsus Tarsus Total I 1.53 0.53 1.68 1.42 0.68 5.84 II 1.26 0.47 1.26 1.16 0.68 4.83 III 1.21 0.47 0.95 1.10 0.68 4.41 IV 1.74 0.47 1.47 1.74 0.89 6.28 Epigyne with a longitudinal median plate, anteriorly wide and posteriorly narrow. Copulatory openings semicircular ( Fig. 6 ), situated at the anterior margin of median plate. Vulva with a pair of thin and slanting spermathecae posteriorly, stick-shaped, connecting to the short fertilization ducts; with a pair of large transparent contiguous bursae, anteriorly ( Fig. 7 ). Both spermathecae and bursae connected with copulatory openings.

Variation. Total body length: male 2.95–3.31, female 3.42–4.05. Number of spines on legs in other specimens: prolateral side of femur I, male two or three, female three; ventral side of tibia I, male six pairs, female six pairs; prolateral side of femur II, male one, female one.

Distribution. Only known from the type locality ( Fig. 21 ).

Figures

FIGURE 21. Distribution of O. liupan sp. nov., O. hengshan (Song, 1990) and O. foveata (Song, 1990) in China.

FIGURES 1 – 7. Otacilia liupan sp. nov. 1. Male body, dorsal view. 2. Left male palpus, prolateral view. 3. Same, retrolateral view. 4. Same, ventral view. 5. Same, dorsal view. 6. Epigyne, ventral view. 7. Vulva, dorsal view. Scale bars: 1.0 mm (1); 0.3 mm (2 – 7).

FIGURES 8 – 14. Otacilia hengshan (Song, 1990) comb. nov. 8. Male body, dorsal view. 9. Left male palpus, prolateral view. 10. Same, retrolateral view. 11. Same, ventral view. 12. Cymbium of left male palpus, dorsal view. 13. Epigyne, ventral view. 14. Vulva, dorsal view. Scale bars: 1.0 mm (8); 0.3 mm (9 – 14).