Heptathela kubayama, Xu, Xin, Ono, Hirotsugu, Kuntner, Matjaz, Liu, Fengxiang & Li, Daiqin, 2019

Xu, Xin, Ono, Hirotsugu, Kuntner, Matjaz, Liu, Fengxiang & Li, Daiqin, 2019, A taxonomic monograph of the liphistiid spider genus Heptathela, endemic to Japanese islands, ZooKeys 888, pp. 1-50 : 1

Heptathela kubayama sp. nov. Fig. 17

Type material.

Holotype: JAPAN · ♀; Okinawa-ken, Iheyajima Island, Mt. Kubayama Nature Conservation Area; 27.09N, 128.02E; alt. 85 m; 26 December 2012; D. Li, F.X. Liu and X. Xu leg.; XUX-2012-486.

Paratypes: JAPAN · 8 ♀♀; same data as for holotype; XUX-2012-479, 481 to 485, 487 to 488.

Diagnosis.

Females of H. kubayama sp. nov. can be distinguished from those of H. gayozan sp. nov. and H. mae sp. nov. by paired receptacular clusters with short genital stalks ( Fig. 17 A–B ). Heptathela kubayama sp. nov. can also be diagnosed from all other Okinawa group Heptathela species by the following unique nucleotide substitutions in the standard DNA barcode alignment: G (239), G (329), G (353), C (359), G (443), G (602), G (647).

Description.

Female (Holotype). Carapace brown; opisthosoma light brown, with dark brown tergites close to each other; cheliceral groove with 12 pronounced denticles; six spinnerets. Measurements: BL 10.20, CL 4.89, CW 4.18, OL 4.90, OW 3.60; ALE> PLE> PME> AME; palp 8.25 (2.82 + 1.45 + 1.80 + 2.18), leg I 9.66 (3.10 + 1.70 + 1.81 + 1.90 + 1.15), leg II 8.90 (2.90 + 1.55 + 1.75 + 1.70 + 1.00), leg III 9.59 (2.81 + 1.65 + 1.60 + 2.13 + 1.40), leg IV 13.67 (4.25 + 2.00 + 2.00 + 3.54 + 1.88).

Female genitalia. A pair of depressions on the ventro-lateral part of the genital atrium ( Fig. 17C, D ). A pair of receptacular clusters along the anterior margin of bursa copulatrix, divided into two parts, with several granules; with short genital stalks ( Fig. 17 A–D ).

Male. Unknown.

Etymology.

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

Distribution.

The species is endemic to the Japanese island Iheyajima ( Fig. 1C ).

Figures

Figure 1. General somatic morphology of Heptathela kimurai (Kishida, 1920) A dorsal view B ventral view and map showing the sampling localities of Heptathela specimens from Kyushu to central Ryukyus (C).

Figure 17. Female genital anatomy of Heptathela kubayama sp. nov. A, C 2486 (holotype, short for XUX- 2012 - 486) B, D 2482 A, B vulva dorsal view C, D vulva ventral view. Scale bar: 0.5 mm.