Ryuthela nago, Xu & Liu & Ono & Chen & Kuntner & Li, 2017

Xu, Xin, Liu, Fengxiang, Ono, Hirotsugu, Chen, Jian, Kuntner, Matjaž & Li, Daiqin, 2017, Targeted sampling in Ryukyus facilitates species delimitation of the primitively segmented spider genus Ryuthela (Araneae: Mesothelae: Liphistiidae), Zoological Journal of the Linnean Society 181, pp. 867-909 : 890

publication ID	F160993-028B-4CBB-A233-54F82230E0AD
publication LSID	lsid:zoobank.org:pub:F160993-028B-4CBB-A233-54F82230E0AD
persistent identifier	https://treatment.plazi.org/id/A54587BB-FFCB-FFC5-B46A-F980EED9D4C9
treatment provided by	Plazi
scientific name	Ryuthela nago
status	sp. nov.

Treatment

RYUTHELA NAGO View in CoL SP. NOV.

urn:lsid:zoobank.org:act:647F993A-A067-4FD5-BE2B-DC087324AD2D

Holotype: Female (XUX-2012-448), collected at Mt. Nago dake, Nago-shi, Okinawajima island, Japan, 26.58°N, 128.01°E, 210 m a.s.l., 24 December 2012, by D. Li, F. X. Liu and X. Xu. GoogleMaps

Paratypes: Seven females and one juvenile [XUX-2012- (447/449–455)], collected at the same locality as holotype, 24 December 2012, by D. Li, F. X. Liu and X. Xu GoogleMaps .

Etymology: The species epithet, a noun in apposition, refers to the type locality.

Diagnosis: Females of Ryuthela nago sp. nov. can be distinguished from other Okinawajima island species by the terminal part of the receptacular clusters, which slightly extends outward ( Fig. 9A, C, G, I). Ryuthela nago sp. nov. can also be diagnosed from all other Ryuthela species on Okinawajima island by the following unique nucleotide substitutions in the standard DNA barcode alignment: A (7), C (43), C (100), C (106), G (124), G (205), C (270), G (322), G (337), T (383), C (433), G (523).

Description: Female (holotype). Carapace and opisthosoma light brown; tergites slightly dark brown; a few long pointed hairs running over ocular mound in a longitudinal row; chelicerae robust with promargin of cheliceral groove with 12–14 strong denticles of variable size; legs with strong hairs and spines; opisthosoma with 12 tergites, the fifth largest; 7 spinnerets. Measurements: BL 8.80–12.00, CL 4.25–5.52, CW 3.70–4.55, OL 4.62–6.50, OW 3.50–4.70; ALE> PLE> PME> AME; palp 8.00 (2.70 + 1.38 + 1.80 + 2.12), leg I 9.52 (3.00 + 1.60 + 1.78 + 1.95 + 1.19), leg II 9.06 (2.75 + 1.50 + 1.65 + 1.98 + 1.18), leg III 9.44 (2.52 + 1.50 + 1.65 + 2.35 + 1.42), leg IV 14.22 (4.02 + 1.82 + 2.50 + 3.88 + 2.00).

Female genitalia. A pair of receptacular clusters along the anterior margin of bursa copulatrix with their basal parts close to each other or separated; the terminal parts slightly extending outward; without genital stalks ( Fig. 9A–I).

Male. Unknown.

Distribution: Okinawajima island (Mt. Nago dake, Nago-shi), Okinawa Prefecture, Japan.