Heptathela gayozan, 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 gayozan sp. nov. Fig. 16

Type material.

Holotype: JAPAN · ♀; Okinawa-ken, Iheyajima Island, Mt. Gayozan; 27.02N, 127.97E; alt. 25 m; 27 December 2012; D. Li, F.X. Liu and X. Xu leg.; XUX-2012-511.

Paratypes: JAPAN · 2 ♀♀; same data as for holotype; XUX-2012-513, 515.

Diagnosis.

Females H. gayozan sp. nov. cannot be distinguished morphologically from those of H. aha sp. nov. but can be distinguished from those of H. kubayama sp. nov. by the receptacular clusters without genital stalks; and from those of H. mae sp. nov. by the inner receptacular clusters that are equal in size, or slightly larger than laterals ( Fig. 16 A–D ). H. gayozan sp. nov. can be diagnosed from all other Okinawa group Heptathela species by the following unique nucleotide substitutions in the standard DNA barcode alignment: G (38), G (41), G (122), C (203), C (365), C (452), C (470), T (518), C (527), C (533), T (560), T (653).

Description.

Female (holotype). Carapace brown; opisthosoma light brown, with dark brown tergites close to each other; cheliceral groove with 12 denticles; seven spinnerets. Measurements: BL 10.00, CL 4.40, CW 3.88, OL 4.84, OW 3.48; ALE> PLE> PME> AME; palp 7.32 (2.72 + 1.50 + 1.80 + 1.30), leg I 9.61 (2.95 + 1.62 + 1.82 + 1.97 + 1.25), leg II 9.38 (2.80 + 1.58 + 1.71 + 2.07 + 1.22), leg III 9.60 (2.65 + 1.55 + 1.62 + 2.28 + 1.50), leg IV 13.89 (3.75 + 1.82 + 2.52 + 3.75 + 2.05).

Female genitalia. A pair of depressions on the ventro-lateral part of genital atrium ( Fig. 16C, D ). A pair of receptacular clusters along the anterior margin of bursa copulatrix, divided into two parts, with several granules, without genital stalks ( Fig. 16 ).

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 16. Female genital anatomy of Heptathela gayozan sp. nov. A, C 2511 (holotype, short for XUX- 2012 - 511) B, D 2513 A, B vulva dorsal view C, D vulva ventral view. Scale bar: 0.5 mm.