Otacilia biarclata, Fu & He & Zhang, 2015

Fu, Li-Na, He, Jing-Chao & Zhang, Feng, 2015, Species of the genus Otacilia from Hainan Island, China (Araneae: Phrurolithidae), Zoological Systematics 40 (4), pp. 436-450: 437-443

publication ID

http://doi.org/ 10.11865/zs.20150402

publication LSID

lsid:zoobank.org:pub:D5FFA49D-6D73-4E11-BA33-7F5477145431

DOI

http://doi.org/10.5281/zenodo.4617492

persistent identifier

http://treatment.plazi.org/id/039A9B41-FFEB-C62A-62C9-5A17D88CEFDE

treatment provided by

Carolina

scientific name

Otacilia biarclata
status

sp. nov.

Otacilia biarclata   sp. nov. ( Figs 1–20 View Figs 1–6 View Figs 7–14 View Figs 15–20 )

Material examined. Holotype ♂, China, Hainan Province, Ledong County, Mt. Jianfengling , Main Peak (18°43′47″N, 108°52′21″E), 31 January 2015, Li-Na Fu leg. GoogleMaps   Paratypes: 7♂, 2♀, Chi Jin, Bao-Shi Zhang leg., other data as holotype GoogleMaps   .

Etymology. The specific name comes from the Latin word ‘ arc ’, combined with the prefix ‘ bi -’, referring to the two arc-shaped copulatory ducts; adjective.

Diagnosis. Among the congeners, the new species is characteristic in having two arc-shaped copulatory ducts; and long sickle-shaped embolus. It resembles O. sinifera Deeleman-Reinhold, 2001   in having similar copulatory ducts, but can be distinguished by: 1) longer and thicker embolus; 2) copulatory openings anteriorly; 3) wooden-stick-shaped bursae. The female of the new species can be separated from O. limushan   , O. jianfengling   and O. bawangling   by: 1) absence of median plate; 2) smaller copulatory openings; 3) wooden-stick-shaped bursae.

Description. Male ( Fig. 7 View Figs 7–14 ). Total length 3.05–3.25 (n =8). Holotype body 3.12 long; carapace 1.43 long, 1.23 wide; abdomen 1.58 long, 0.98 wide. Carapace dark brown, oval, abruptly narrow anteriorly, medium brown; thoracic part slightly higher than the cephalic part; fovea longitudinal, distinct. In dorsal view, AER slightly recurved, PER slightly wider than AER and almost straight. Diameter of eyes: AME 0.07, ALE 0.09, PME 0.08, PLE 0.06. Interdistances of eyes: AME–AME 0.04, AME–ALE 0.02, PME–PME 0.07, PME–PLE 0.04. MOA 0.24 long, front 0.20 wide, back 0.23 wide. Clypeus 0.10 high. Chelicerae with two strong anterior bristles ( Fig. 1 View Figs 1–6 ); cheliceral promargin with two well-separated teeth and retromargin with two clustered denticles ( Fig. 4 View Figs 1–6 ). Labium slightly wider than long ( Fig. 2 View Figs 1–6 ). Legs light brown. Leg measurements: leg I 5.52 (1.59, 0.37, 1.56, 1.26, 0.74), II 4.04 (1.12, 0.31, 1.01, 0.90, 0.70), III 3.75 (1.16, 0.25, 0.91, 0.76, 0.67), IV 5.99 (1.61, 0.43, 1.45, 1.51, 0.99). Leg formula: 4123. Femora I–IV basally with one dorsal spine. Femur I with four prolateral spines ( Fig. 5 View Figs 1–6 ) and femur II without prolateral spine; tibia I with six or seven proventral spines and seven retroventral spines, tibia II with six proventral spines and five retroventral spines; metatarsus I with four pairs of ventral spines, metatarsus II with four proventral spines and three retroventral spines; metatarsi III and IV with distal preening brush ( Fig. 6 View Figs 1–6 ). Abdomen dark brown; anterior half without a dorsal scutum; posterior half dark brown, with a white spot terminally.

Palp ( Figs 9–12 View Figs 7–14 , 15–18 View Figs 15–20 ). Palp with a thick, posteriorly extending RTA, consisting of a broad base and a hook-shaped tip; femur with an distal apophysis and a retrolateral concavity; distal cymbium ventrally with several hairs; tegulum convex, TA short and small; embolus strong, hook-shaped, slightly sharp apically.

Female ( Fig. 8 View Figs 7–14 ). Total length 3.45–4.03 (n =2). One paratype body 4.03 long; carapace 1.84 long, 1.61 wide; abdomen 2.24 long, 1.41 wide. Carapace light brown, oval, abruptly narrow anteriorly. Diameter of eyes: AME 0.08, ALE 0.07, PME 0.09, PLE 0.08. Eye interdistances: AME–AME 0.05, AME–ALE 0.04, PME–PME 0.09, PME–PLE 0.06. MOA 0.28 long, front 0.21 wide, back 0.29 wide. Clypeus 0.09 high. Chelicerae light brown. Labium and gnathocoxae brown. Legs and palps yellowish brown. Leg measurements: I 6.22 (1.52, 0.51, 1.86, 1.46, 0.87), II 5.26 (1.20, 0.54, 1.42, 1.21, 0.89), III 4.76 (1.15, 0.49, 1.04, 1.25, 0.83), IV 7.27 (1.95, 0.58, 1.76, 1.87, 1.11). Leg formula: 4123. Femora I–IV basally with one dorsal spine. Femur I with four prolateral spines and femur II with two prolateral spines; tibia I with seven pairs of ventral spines, tibia II with seven proventral spines and six retroventral spines; metatarsi I and II with the same spination as male. Abdomen without a narrow dorsal scutum. Other characters as in male.

Epigyne ( Figs 13–14 View Figs 7–14 , 19–20 View Figs 15–20 ). Copulatory openings small, oval, anteriorly ( Figs 13 View Figs 7–14 , 19 View Figs 15–20 ). Vulva anteriorly with a pair of large transparent wooden-stick-shaped bursae, posteriorly with a pair of thick, closely situated spermathecae; copulatory duct relatively long; glandular appendage much shorter than fertilization duct.

Distribution. China (Hainan).

TA

Timescale Adventures Research and Interpretive Center

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Corinnidae

Genus

Otacilia