Ryuthela kisenbaru, 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 : 887-888

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-FFC8-FFC7-B6F6-FB31EBCCD71B
treatment provided by	Plazi (2025-02-04 21:00:28, last updated by GgImagineBatch 2025-02-04 21:13:56)
scientific name	Ryuthela kisenbaru
status	sp. nov.

Treatment

RYUTHELA KISENBARU View in CoL SP. NOV.

urn:lsid:zoobank.org:act:9367AD6C-D34A-41BE-A9DA-94985D36BF73

Holotype: Female (XUX-2012-474) collected southeast of County Road 104 and 58 junction, Kisenbaru, area between Onna-son and Kin-cho, Okinawajima island, Japan, 26.48°N, 127.91°E, 30 m a.s.l., 25 December 2012, by D. Li, F. X. Liu and X. Xu. GoogleMaps

Paratypes: Two females (XUX-2012-476/477), collected at the same locality, 25 December 2012, by D. Li, F. X. Liu and X. Xu .

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

Diagnosis: Females of R. kisenbaru sp. nov. differ from all other Ryuthela species except R. nishihirai s.s. by the short and slightly cylindrical receptacular clusters, and can be distinguished from R. nishihirai s.s. by the receptacular clusters fused together with fewer granula ( Fig. 7C, D). However, R. kisenbaru sp. nov. can also be diagnosed from R. nishihirai s.s. by the following unique nucleotide substitutions in the standard DNA barcode alignment: T (16), A (19), T (115), A (157), A (160), T (173), C (239), C (262), A (278), A (304), A (310), T (352), G (358), T (382), G (406), G (454), A (475), T (494), A (496), C (554), A (559), C (571), T (574), C (592), T (601).

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; 7 spinnerets. Measurements: BL 8.08–9.90, CL 3.65–4.85, CW 3.38–3.92, OL 3.88– 5.50, OW 3.00–3.90; ALE> PLE> PME> AME; palp 8.53 (2.90 + 1.48 + 1.85 + 2.30), leg I 10.08 (3.20 + 1.60 + 2.00 + 2.10 + 1.18), leg II 9.52 (2.85 + 1.62 + 1.60 + 2.15 + 1.30), leg III 10.16 (2.80 + 1.71 + 1.75 + 2.42 + 1.48), leg IV 14.53 (4.05 + 2.00 + 2.15 + 3.95 + 2.38).

Female genitalia. A pair of receptacular clusters along the anterior margin of bursa copulatrix; the basal parts close to each other or fused together; without genital stalks ( Fig. 7A–D).

Male. Unknown.

Distribution: Okinawajima island (Kisenbaru), Okinawa Prefecture, Japan.