Heptathela mae, 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 mae sp. nov. Fig. 18

Type material.

Holotype: JAPAN · ♀; Okinawa-ken, Iheyajima Island, Mt. Mae-dake; 27.06N, 127.99E; alt. 10 m; 26 December 2012; D. Li, F.X. Liu and X. Xu leg.; XUX-2012-497.

Paratypes: JAPAN · 5 ♀♀; same data as for holotype; XUX-2012-494 to 496, 498, 500 · 3♀♀; Okinawa Prefecture, Iheyajima Island, Mt. Mae-dake; 27.06N, 127.99E; alt. 20 m; 10 May 2014; D. Li and B. Wu leg.; XUX-2014-079A to 079C.

Diagnosis.

Females of H. mae sp. nov. can be distinguished from those of H. aha sp. nov. and H. gayozan sp. nov. by the lateral receptacular clusters being larger than the inner ones ( Fig. 18B, D ), and from those of H. kubayama sp. nov. by the receptacular clusters without short genital stalks ( Fig. 18 A–D ). Heptathela mae 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: C (74), T (227), G (389), C (407), A (461), G (503), G (635).

Description.

Female (Holotype). Carapace brown; opisthosoma brown, brown tergites with black plaques; cheliceral groove with 12 denticles; seven spinnerets. Measurements: BL 9.28, CL 4.48, CW 4.00, OL 5.12, OW 3.78; ALE> PLE> PME> AME; palp 7.80 (2.70 + 1.32 + 1.71 + 2.07), leg I 9.25 (3.00 + 1.52 + 1.80 + 1.78 + 1.15), leg II 8.55 (2.68 + 1.20 + 1.72 + 1.75 + 1.20), leg III 9.61 (2.75 + 1.60 + 1.55 + 2.31 + 1.40), leg IV 13.41 (3.90 + 1.70 + 2.31 + 3.60 + 1.90).

Female genitalia. A pair of depressions on the ventro-lateral part of the genital atrium ( Fig. 18C, D ). A pair of receptacular clusters along the anterior margin of bursa copulatrix, divided into two parts, with several granules, without genital stalks, the posterior part of genital area incurved ( Fig. 18 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 18. Female genital anatomy of Heptathela mae sp. nov. A, C 2497 (holotype, short for XUX- 2012 - 497) B, D 4079 B A, B vulva dorsal view C, D vulva ventral view. Scale bar: 0.5 mm.