Nesticus navicellatus, Liu, Jie & Li, Shuqiang, 2013

Liu, Jie & Li, Shuqiang, 2013, New cave-dwelling spiders of the family Nesticidae (Arachnida, Araneae) from China, Zootaxa 3613 (6), pp. 501-547: 542-546

publication ID

http://dx.doi.org/10.11646/zootaxa.3613.6.1

publication LSID

lsid:zoobank.org:pub:C8AE54F3-1555-4221-8F99-3E4E9E8E8085

persistent identifier

http://treatment.plazi.org/id/03AB87D8-2E4D-5A77-35AB-FF3D6D00C344

treatment provided by

Plazi

scientific name

Nesticus navicellatus
status

new species

Nesticus navicellatus  new species

Figs 35–39View FIGURE 35View FIGURE 36View FIGURE 37View FIGURE 38View FIGURE 39

Type material: Holotype male, 2 female paratypes, CHINA: Guangxi Zhuang Autonomous Region, Dahua County, Qibailong Town, Qiaoxu Village, Qiaoxu Cave (24 º 4.564 ´N, 107 º 40.238 ´E, Altitude: 550 m, Air Temperature: 18 ºC, Air Humidity: 90 %), 9 March 2007, Yucheng Lin & Jie Liu leg.

Etymology: The species name is taken from the Latin adjective navicellatus  and refers to the small navicular conductor dorsal apophysis of male pedipalp.

Diagnosis: The new species is similar to Nesticus libo Chen & Zhu, 2005  in having six eyes without AME, a pestle-shaped median apophysis, a complex conductor and distinct copulatory openings, but can be distinguished from the latter by the developed paracymbium with four branches (with proximal branch of ventral process almost rectangular and distal branch of dorsal process tooth-shaped), the distinct navicular CDA (dorsal conductor apophysis) and the small spherical spermathecae ( Figs 35 –37View FIGURE 35View FIGURE 36View FIGURE 37, 38View FIGURE 38 C –E).

Description. Male (holotype): Total length 2.84. Prosoma length 1.28, width 1.28; Opisthosoma length 1.56, width 1.36. Eye measurements: AME absent; ALE 0.08; PME 0.06; PLE 0.08; AME-AME -; AME-ALE -; ALE- PLE 0.01; PME-PME 0.1; PME-PLE 0.07. Clypeus height 0.25. Leg formula: I, IV, II, III; leg measurements: I: 15.12 (4.4, 0.68, 4.24, 4.28, 1.52); II: 10.8 (3.16, 0.48, 3, 3.12, 1.04); III: 7.56 (2.24, 0.44, 1.84, 2.16, 0.88); IV: 10.72 (3.6, 0.56, 2.72, 2.76, 1.08). Somatic characters see Fig. 38View FIGURE 38 B. Tibia of pedipalp long; paracymbium developed, with four branches, proximal branch of VP (ventral process of paracymbium) almost rectangular, distal branch of VP large and wide, distal branch of DP (dorsal process of paracymbium) tooth-shaped and curved inward, proximal branch of DP large; conductor complex, with a distinct navicular CDA (dorsal conductor apophysis); median apophysis large, pestle-shaped; tegular projection absent; embolus posteriorly in origin, long ( Figs 35View FIGURE 35, 36View FIGURE 36 A –B, 37).

Female (paratype): Total length 3.04. Prosoma length 1.28, width 1.2; Opisthosoma length 1.76, width 1.76. Eye measurements: AME absent; ALE 0.08; PME 0.07; PLE 0.09; AME-AME -; AME-ALE -; ALE-PLE 0.01; PME-PME 0.1; PME-PLE 0.05. Clypeus height 0.24. Leg formula: I, IV, II, III; leg measurements: I: 11.72 (3.48, 0.48, 3.36, 3.04, 1.36); II: 8.76 (2.76, 0.52, 2.28, 2.16, 1.04); III: 5.8 (2.08, 0.32, 1.24, 1.48, 0.68); IV: 8.4 (2.88, 0.4, 2.32, 1.96, 0.84). Somatic characters see Fig. 38View FIGURE 38 A. Epigynum simple, lacking scape; median septum small; copulatory openings large; copulatory ducts developed, slightly separated from each other; spermathecae small, global, situated medially and laterally, widely separated from each other ( Figs 36View FIGURE 36 C –D, 38 C –E).

Distribution: Known only from type locality ( Fig. 39View FIGURE 39).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Nesticidae

Genus

Nesticus