Otacilia limushan, 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 : 648

Otacilia limushan sp.nov.

( Figure 4 )

Type material

Holotype female, China: Hainan Province, Qiongzhong County, Mt. Limu (19.3° N, 109.1° E), 18 August 2007, F. Zhang leg. ( MHBU).

Diagnosis

This new species resembles O. bawangling sp. nov., but can be distinguished from the latter by: (1) dorsal markings of carapace and abdomen are different as O. limushan has very indistinct abdominal markings with no pattern ( Figure 4A ); (2) bursa is larger than in O. bawangling ; (3) median plate distinctly wider than in O. bawangling .

Etymology

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

Description

Female (holotype). Total length 3.64: cephalothorax 1.62 long, 1.40 wide, head width 0.29; abdomen 2.02 long, 1.17 wide. Carapace elongate-ovoid in dorsal view, bulging, highest almost at dorsal groove, widest at coxae II and III ( Figure 4A ); brown, darker in eye area; cephalic groove and radial furrow brown, distinctly; thoracic groove longitudinal. From above, AER slightly recurved, PER slightly wider than AER and slightly procurved ( Figure 4A ); 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 spine, five prolateral spines; tibia I with eight pairs of ventral spines; metatarsus I with four 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 listed in Table 5. Leg formula: 4-1-2-3. Abdomen ovoid, yellowish, without scutum, posterior half with several faint, chevron-like white stripes dorsally. Epigyne with a longitudinal median plate centrally. Vulva anteriorly with a pair of massive transparent, pear-shaped bursae; posteriorly with a pair of smaller, thin and slanting spermathecae; both spermathecae and bursae connected to copulatory opening.

Distribution

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

Figures

Figure 4. Otacilia limushan, sp. nov. (A) Female body, dorsal view; (B) epigynum, ventral view; (C) vulva, dorsal view. Scale bars (A) 1.0 mm; (B, C) 0.2 mm.