Otacilia bawangling, Fu & Zhang & Zhu, 2010

Fu, Jian-Ying, Zhang, Feng & Zhu, Ming-Sheng, 2010, Three new species of the genus Otacilia (Araneae: Corinnidae) from Hainan Island, China, Journal of Natural History 44 (11 - 12), pp. 639-650 : 645-647

Otacilia bawangling sp.nov.

( Figure 3 )

Type material

Holotype male, China: Hainan Province, Changjiang County, Mt. Bawangling (19.3° N, 109.1° E], 7 November 2008, M. S. Zhu leg. ( MHBU). Paratypes one male, four females, same data as holotype, collected by G. X. Han, S. T. Guo and J. Y. Guo ( MHBU).

Diagnosis

This new species resembles O. taiwanicus (cf. Kamura 2001: 54, figs. 14–19) in the shape of the genital organs, but can be distinguished from the latter by: (1) dorsal markings of carapace and abdomen different ( Figure 3A ); (2) median plate of epygine narrower than in O. taiwanicus ; (3) the spermathecae almost parallel compared with V-shaped in O. taiwanicus ( Figure 3E, F ).

Etymology

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

Description

Male (holotype). Total length 2.95: cephalothorax 1.45 long, 1.25 wide, head width 0.30; opisthosoma 1.50 long, 1.00 wide. Carapace light brown, darker in eye area; elongate-ovoid in dorsal view, bulging, highest almost at dorsal groove, widest at coxae II and III ( Figure 3A ); cephalic groove and radial furrow distinct; thoracic groove longitudinal, distinct. Eyes arranged in two transverse rows, from above, AER slightly recurved, PER slightly wider than AER and slightly procurved ( Figure 3A ); eye diameters: AME 0.09, ALE 0.09, PME 0.07, PLE 0.08; between-eye distances: AME–AME 0.12, AME–ALE 0.10, PME–PME 0.13, PME–PLE 0.12, ALE–PLE 0.08; MOA 0.32 long, anterior width 0.24, posterior width 0.26. Clypeal height 0.09. Chelicera with two spines on anterior side; promargin with three well-separated teeth and retromargin with four teeth close to each other. Endites longer than wide, constricted on lateral margin. Labium broad, round distally; sternum heart-shaped, truncate at front, pointed behind, with strongly rebordered margins.

Legs brown, femur I with one dorsal spines and five prolateral spines; tibia I with seven pairs of ventral spines; metatarsus I with five pairs of ventral spines; femur II with one dorsal spine and three prolateral spines, tibia II with eight pairs of ventral spines, metatarsus II with four pairs of ventral spines; femur III and femur IV each with one dorsal spine, no prolateral spine; other segments have no spines. Measurements of legs are given in Table 3. Leg formula: 4-1-2-3.

Male palpus ( Figure 3B–D ) with single, large retrolateral tibial apophysis extending posteriorly, femur ventrodistally swollen and with an apophysis and concavity on retrolateral side. Tegulum convex, without conspicuous apophysis but with small tegular process situated retrolaterally and near to embolus and facing the same direction; embolus hook-shaped, apical.

Abdomen ovoid, yellowish, a dorsal narrow scutum anteriorly situated, two white markings at shoulders, posterior half with several chevron-like white stripes dorsally.

Female. Carapace colour, eye arrangement and abdominal colouration as for male. A paratype female was measured, total length 4.28: cephalothorax 1.98 long, 1.44 wide; abdomen 2.30 long, 1.30 wide. Clypeal height 0.09. Eye diameters: AME 0.10, ALE 0.10, PME 0.08, PLE 0.09; between-eye distances: AME–AME 0.14, AME–ALE 0.12, PME–PME 0.17, PME–PLE 0.13, ALE–PLE 0.19. MOA 0.30 long, front width 0.23, back width 0.25. Abdomen without a dorsal scutum. Legs brown, femur I with one dorsal spine, five prolateral spines; tibia I with 10 pairs of ventral spines; metatarsus I with four pairs of ventral spines; femur II with one dorsal spine and four prolateral spines, tibia II with eight pairs of ventral spines, metatarsus II with three pairs of ventral spines; other segments have no spines. Leg measurements are listed in Table 4. Leg formula: 4-1-2-3-.

Epigyne with two semicircular copulatory openings ( Figure 3E, F ), each situated about midway along exterior margin of epigyne; median plate narrow. Vulva anteriorly with a pair of large transparent bursae, pear-shaped; posteriorly with a pair of thick spermathecae; both spermathecae and bursae connected to copulatory openings.

Distribution

Presently known only from the type locality, Mt. Bawangling , Hainan Province, China .

Figures

Figure 3. Otacilia bawangling, sp. nov. (A) Male body, dorsal view; (B–D) male left palp: (B) prolateral view, (C) ventral view, (D) retrolateral view; (E) epigynum, ventral view; (F) vulva, dorsal view. Scale bars: (A) 1.0 mm; (B–D) 0.4 mm; (E, F) 0.2 mm.