Ryuthela unten, 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 : 892-893

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-FFC5-FFC8-B461-FAAFEFBFD41A
treatment provided by	Plazi
scientific name	Ryuthela unten
status	sp. nov.

Treatment

RYUTHELA UNTEN View in CoL SP. NOV.

urn:lsid:zoobank.org:act:9E8B4944-AD55-4B78-9135-8ACD47F22308

Holotype: Female (XUX-2012-524), collected at Unten Port , Nakijin-son, Okinawajima island, Japan, 26.68°N, 128.00°E, 24 m a.s.l., 27 December 2012, by D. Li, F. X. Liu and X. Xu. GoogleMaps

Paratypes: Four females [XUX- 2012 - (525/528/529/531)], collected at the same locality as holotype, 27 December 2012 GoogleMaps ; two females [XUX-2012-(532/536)] from near Beach Rock Village , Mt. Otowa dake, Nakijin-son, Okinawajima island, Japan, 26.67°N, 127.97°E, 80 m a.s.l., 27 December 2012 GoogleMaps , by D. Li, F. X. Liu and X. Xu; two females (XUX-2014-084/100), collected from Mt. Otowa dake, Nakijin-son, Okinawajima island, Japan, 26.67°N, 127.97°E, 100 m a.s.l., 11 May 2014 GoogleMaps , by D. Li and B. Wu.

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

Diagnosis: Females of Ryuthela unten sp. nov. can be distinguished from other Okinawajima island Ryuthela species by the more or less triangular receptacular clusters from both ventral and distal views ( Fig. 11A–H). Ryuthela unten 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: G (97), T (127), C (148), C (160), G (172), G (196), C (202), G (269), C (352), T (364), C (376), C (379), G (430), G (487), C (502), A (514), A (550).

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 12–13 strong denticles of variable size; legs with strong hairs and spines; opisthosoma with 12 tergites, the fifth largest; 7 spinnerets. Measurements: BL 9.22–11.40, CL 4.40–5.18, CW 3.90–4.62, OL 5.30–7.25, OW 3.88–5.40; ALE> PLE> PME> AME; palp 8.16 (2.81 + 1.42 + 1.75 + 2.18), leg I 9.06 (2.70 + 1.61 + 1.75 + 2.00 + 1.00), leg II 9.23 (2.75 + 1.60 + 1.70 + 1.98 + 1.20), leg III 9.56 (2.60 + 1.61 + 1.65 + 2.30 + 1.40), leg IV 15.01 (3.80 + 2.83 + 2.43 + 3.88 + 2.07).

Female genitalia. A pair of more or less triangular receptacular clusters along the anterior margin of bursa copulatrix, without genital stalks ( Fig. 11A–H).

Male. Unknown. Distribution: Okinawajima island ( Unten Port and Mt. Otowa dake, Nakijin-son), Okinawa Prefecture, Japan.