Otacilia foveata ( Song, 1990 ) Song, 1990

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 : 65-68

Otacilia foveata ( Song, 1990) comb. nov.

( Figs 15–20 )

Phrurolithus foveatus Song, 1990: 341 , f. 2A–C; Song, Zhu & Chen, 1999: 411, f. 239G–H.

Diagnosis. This species resembles Otacilia jianfengling Fu, Zhang & Zhu, 2010 in having similar genital organs, but can be distinguished from the latter by: (1) the broader tegular process ( Fig. 17 ); (2) the distinctly long embolus ( Figs 17, 18 ); (3) the RTA with two branches, one short and one long ( Fig. 18 ); (4) the copulatory openings situated anteriorly ( Fig. 19 ); (5) the slanting, distinctly long spermathecae ( Fig. 20 ), while almost parallel and short in the latter; (6) bursae oval, separated from each other ( Fig. 20 ).

Description. Male from Fang County. Total body length 3.01. Carapace 1.28 long, 1.07 wide; abdomen 1.63 long, 0.92 wide. Carapace yellowish brown, highest near thoracic groove, with a broad and discontinuous black longitudinal band centrally, black and thin edge around carapace; thoracic groove brown, extending longitudinally. Eyes in two transverse rows; AER recurved, PER slightly recurved from dorsal view (fig. 15). Eyes measurements: AME 0.07, ALE 0.08, PME 0.06, PLE 0.07; AME–AME 0.05, AME–ALE 0.04, PME–PME 0.10, PME–PLE 0.06; MOA longer than wide (0.24: 0.22), narrower anteriorly (0.18: 0.22). Clypeus higher than AME diameter. Chelicerae yellowish brown, with a blackish brown stripe, with two promarginal teeth and four retromarginal teeth; front face with two pairs of spines, one pair short and the other pair long. Endites light yellowish brown, longer than wide. Labium yellowish brown, wider than long. Sternum almost heart-shaped, light yellowish brown, truncated on anterior margin, pointed posteriorly. Legs yellowish brown. Femur I with three 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: 4213 ( Table 5).

Femur Patella Tibia Metatarsus Tarsus Total I 1.16 0.40 1.17 1.10 0.56 4.39 II 1.25 0.42 1.27 1.14 0.56 4.64 III 1.02 0.34 0.79 1.03 0.52 3.70 IV 1.74 0.42 1.58 1.76 0.78 6.28 Abdomen ovoid, grayish black, dorsal scutum not obvious, anteriorly with a white marking in the middle, posterior half with several transverse white stripes.

Male palpus ( Figs 16–18 ). RTA with a long and short branches; femur with an apophysis and concavity retrolaterally; embolus sickle-shaped from ventral view, situated apically; tegular process laminar, broad; sperm duct thick and short, almost circle-shaped.

Female from Fang County. Total body length 3.01. Carapace 1.28 long, 1.07 wide; abdomen 1.63 long, 0.92 wide. Eyes measurements: AME 0.07, ALE 0.08, PME 0.06, PLE 0.10; AME–AME 0.06, AME–ALE 0.04, PME– PME 0.09, PME–PLE 0.06. MOA longer than wide (0.23: 0.21), narrower anteriorly (0.20: 0.21). Carapace markings, eyes arrangement, shapes of mouthparts and leg spination pattern as in male. Leg formula: 4213 ( Table 6).

Femur Patella Tibia Metatarsus Tarsus Total I 1.08 0.40 1.16 1.11 0.56 4.31 II 1.20 0.42 1.26 1.22 0.56 4.66 III 1.01 0.31 0.80 1.04 0.52 3.68 IV 1.68 0.42 1.63 1.75 0.80 6.28 Epigyne ( Fig. 19 ) with a longitudinal median plate, anteriorly wide and posteriorly narrow; two semicircular copulatory openings, anteriorly. Vulva ( Fig. 20 ) anteriorly with a pair of large transparent bursae, separated from each other; posteriorly with a pair of long and slanting spermathecae. Both spermathecae and bursae connected with copulatory openings.

Type material. Female holotype and a female paratype from Hengshan Mountains, Hunan Province, deposited in the Institute of Zoology, Chinese Academy of Sciences, not examined.

Material examined. One male and one female, China: Hubei Province, Fang County, Guanyin Cave (E110°74', N32°06'), June 26, 2001, Ming-Sheng Zhu leg. ( MHBU).

Distribution. Hubei, Hunan ( Fig. 21 ).

Remarks. Phrurolithus foveatus was originally described by Song (1990) from a female holotype and a female paratype collected from Hengshan Mountains, Hunan Province, China. No male has so far been found. Song et al.

(1999) reproduced the illustrations from Song (1990). According to the original description of this species and the generic characters of Otacilia as redefined by Deeleman-Reinhold (2001) and Kamura (2001, 2004), we presumed that P. foveatus should be transferred to Otacilia . Coincidentally, after examining the two Otacilia specimens shown above, we easily identified the female as P. foveatus , and considered that the male specimen also belongs to the same species because the habitus and the marking are very similar to those of the female. Furthermore we recognized that the characteristics of the male palpal organ are conforming to the genus Otacilia , such as the large RTA with a dorsal branch, the sperm duct encircling the distal part of tegulum, and the sickle-shaped embolus located apically. Therefore we transferred this species to Otacilia .

Figures

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

FIGURES 15 – 20. Otacilia foveata (Song, 1990) comb. nov. 15. Male body, dorsal view. 16. Left male palpus, prolateral view. 17. Same, ventral view. 18. Same, retrolateral view. 19. Epigyne, ventral view. 20. Vulva, dorsal view. Scale bars: 1.0 mm (15); 0.3 mm (16 – 20).