Nesticus latiscapus Yaginuma, 1972

Suzuki, Yuya & Ballarin, Francesco, 2020, Nesticus kosodensis Yaginuma, 1972 bona species. Molecular and morphological separation from N. latiscapus Yaginuma, 1972 with notes on cave scaffold-web spiders subspecies in Japan (Araneae, Nesticidae), Subterranean Biology 35, pp. 79-96: 86-89

publication ID

http://dx.doi.org/10.3897/subtbiol.35.53933

publication LSID

lsid:zoobank.org:pub:AD56D17C-0722-4420-AD41-210089ECC283

persistent identifier

http://treatment.plazi.org/id/5695EE2B-0CEB-561B-A578-2148A2F083D7

treatment provided by

Subterranean Biology by Pensoft

scientific name

Nesticus latiscapus Yaginuma, 1972
status

 

Nesticus latiscapus Yaginuma, 1972   Figures 1d, e View Figure 1 , 5 View Figure 5 , 6 View Figure 6 , 7 View Figure 7 , 8c, d View Figure 8

Nesticus latiscapus   Yaginuma, 1972: 291, f. 16-19 (♂♀).

N. latiscapus   Yaginuma, 1979: 264, pl. 7, f. 1, 3 (♂♀).1

Material examined.

Holotype. Japan - Honshu Island • ♂; Yamanashi Prefecture, Minamitsuru-gun (former Kamikuishiki-mura), Aokigahara, Shoji-o-ana cave, Nichi-do cave (精進御穴日洞); [35.4709N, 138.6385E]; 2 Nov. 1969, Ueno S. & Kato K. leg.; NSMT-Ar 61.

Paratype. Japan - Honshu Island • 1♀; same data as the holotype; NSMT-Ar 62.

Other material.

Japan - Honshu Island • 1♂, 2♀♀; Fujikawaguchiko-machi, Saiko Bat Cave (西湖蝙蝠穴); 35.4942N, 138.6714E; 09 Oct. 2014; Ballarin F. leg.; FBPC • 1♂, 2♀♀; same locality, Ryugu Doketsu Cave (龍宮洞穴); 35.4855N, 138.6683E; 09 Oct. 2014; Ballarin F. leg.; FBPC • 1♀; same locality, Narusawa Ice Cave (鳴沢氷穴); 35.4745N, 138.6665E; 10 Oct. 2014; Ballarin F. leg.; FBPC • 1♀; same locality, Fugaku Wind Cave (富岳風穴); 35.4775N, 138.6571E; 10 Oct. 2014 • 3♂♂, 2♀♀, Narusawa-mura, unnamed lava tunnel; 35.4749N, 138.6831E; 01 Apr. 2019; Ballarin F. leg.; FBPC • 1♂, 1♀; Narusawa area, 18 Aug. 2017, Suguro T. leg; TSPC.

Diagnosis.

See diagnosis of N. kosodensis   stat. nov.

Redescription.

Male. Total length: 3.86-4.30 carapace: 1.87-2.02 long, 1.58-1.81 wide (based on three males).

Habitus as in Fig. 1d View Figure 1 . Coloration and shape as in N. kosodensis   stat. nov., some specimens with light-colored midline and lateral edges of carapace. Leg measurements as following (based on one male): I 16.16 (4.31, 0.83, 4.77, 4.57. 1.68), II 12.21 (3.38, 0.81, 3.37, 3.27, 1.38), III 9.17 (3.01, 0.65, 2.16, 2.36, 0.99), IV 12.23 (3.84, 0.70, 3.18, 3.26, 1.25).

Palp as in Figs 5 View Figure 5 , 6 View Figure 6 , 8c View Figure 8 . Paracymbium with five processes: ventral process recurved, narrower at the basal part, dorsal process 1 sharp, weakly curved when observed lat erally and ventrally, dorsal process 2 short and straight, dorsal process 3 small, distal process wing-shaped, with a serrated edge. Bulge of embolus absent, median apophysis lobate, strongly protruded prolaterally, tegular apophysis absent.

Female. Total length: 3.91-4.43, carapace: 1.68-1.72 long, 1.47-1.59 wide (based on three females).

Habitus as in Fig. 1e View Figure 1 . Coloration and shape as in N. kosodensis   stat. nov., some specimens with abdomen dorsal markings large and fused, giving a general darker coloration. Legs measurements as following (based on one female): I 15.67 (4.44, 0.94, 4.60, 4.04, 1.65), II 11.78 (3.38, 0.81, 3.16, 3.04, 1.39), III 8.68 (2.77, 0.75, 1.90, 2.10, 1.16), IV 11.99 (3.81, 0.81, 3.07, 2.97, 1.33).

Epigyne and vulva as in Figs 7 View Figure 7 , 8d View Figure 8 . Scapus prolonged posteriorly, duck beak-shaped, almost the same width or slightly wider towards the tip, ending with slightly divergent edges and lobate corners. Edge of copulatory openings straight, parallel towards the edges of the scapus. Insemination and fertilization ducts reaching spermathecae with a short and convoluted trait. Spermathecae oval. Vulval pockets wrinkled, located above spermathecae.

Distribution.

Endemic to the Fuji Mountain area in central Honshu, Japan (Yamanashi Prefecture). See Fig. 10 View Figure 10 .

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Nesticidae

Genus

Nesticus

Loc

Nesticus latiscapus Yaginuma, 1972

Suzuki, Yuya & Ballarin, Francesco 2020
2020
Loc

Nesticus latiscapus

Yaginuma 1972
1972