Hitobia makotoi Kamura, 2011

Zhou, Bing, Yin, Haiqiang & Xu, Xiang, 2016, First description of the male of Hitobiamakotoi Kamura, 2011 (Araneae, Gnaphosidae), ZooKeys 579, pp. 1-7 : 2-7

Taxon classification Animalia Araneae Gnaphosidae

Hitobia makotoi Kamura, 2011 Figs 1, 2, 3, 4

Hitobia makotoi Kamura, 2011: 104, figs 3-7 (description and illustration of female).

Hitobia makotoi : Wang and Peng 2014: 31, figs 17-23 (description and illustration of female).

Material examined.

2 ♂ (HNU), Cangjingdian (27°16.14'N, 112°41.72'E, 950 m), Hengshan Mountain, Hengyang City, Hunan Province, China, 8 July 2014; 1 ♂, 1 ♀ (HNU), Lingzhiquan (27°16.28'N, 112°42.13'E, 650 m), Hengshan Mountain, Hengyang City, Hunan Province, China, 8 July 2014; 1 ♂ (HNU), Shumuyuan (27°15.93'N, 112°43.34'E, 360 m), Hengshan Mountain Hengyang City, Hunan Province, China, 10 July 2014. All specimens were collected by Bing Zhou, Cheng Wang, Jiahui Gan and Yuhui Gong.

Diagnosis.

Male of Hitobia makotoi can be distinguished from all other Hitobia by the extraordinarily elongated retrolateral tibial apophysis which is nearly as long as the cymbium, and its distal end serrated and with a small hook apically (Figs 1B, C; 3A, B). The female of Hitobia makotoi is similar to that of Hitobia unifascigera ( Bösenberg & Strand, 1906) in having a transverse white band on the posterior part of opisthosoma, but can be distinguished from the latter by the following characters: epigynal hood situated on the anterior part of epigynum, but situated at the middle part in Hitobia unifascigera ; atrium vertically elongated, and almost as long as the epigynum, but short, and half as long as the epigynum in Hitobia unifascigera (Figs 2B, 3D, cf. fig. 633e in Yin et al. 2012 and fig. 89H in Song, Zhu and Zhang 2004); and finally, a long and thin spermathecae in Hitobia makotoi , but thick and massive in Hitobia unifascigera (Figs 2C, 3E, cf. fig. 633f in Yin et al. 2012 and fig. 89I in Song, Zhu and Zhang 2004).

Description.

Male: Body length 3.92. Prosoma length 1.78, width 1.18; opisthosoma length 2.18, width 1.01. Clypeus height 0.04. Carapace black brown, oval, widest at coxae II and III. Fovea and cervical grooves indistinct (Fig. 1A). Eye measurements and interdistances: AME 0.08, ALE 0.10, PME 0.08, PLE 0.10, AME–AME 0.03, AME–ALE 0.01, PME–PME 0.08, PME–PLE 0.05, ALE–PLE 0.07. MOA anterior width 0.15, posterior width 0.20, length 0.07. Both eye rows recurved. Chelicerae with three promarginal (the middle one largest) and one retromarginal teeth. Endites yellowish, with some soft short hairs on the inner side. Labium yellowish brown, longer than wide. Sternum decorated with many black spots, anterior straight and posterior subacute. Legs femora I–IV blackish brown, but yellowish brown dorsally. Trochanters I and II without ventral notch, III and IV each with a shallow ventral notch. Leg spination: femora: I, II, IV d1-1-1, p1-0-0, III d1-1-1, p1-1-0, v1-1-0; patellae: III, IV r0-1-0; tibiae: I p1-0-0, v2-2-2, II p1-0-1, v2-2-1, III d2-2-0, p0-0-1, v2-2-1, r0-1-1, IV d1-0-0, p1-1-1, v1-0-1, r1-0-1; metatarsi: I v2-0-0, II p0-1-0, v2-0-0, III d0-1-1, p1-1-1, v0-0-1, r1-1-2. Leg measurements: I 3.20 (0.88, 1.28, 0.60, 0.44), II 3.48 (1.00, 1.32, 0.68, 0.48), III 3.00 (0.84, 0.96, 0.76, 0.44), IV 4.12 (1.16, 1.36, 1.04, 0.56). Leg formula: IV-II-I-III. Opisthosoma long and oval, covered all over with villi, and with a transverse white stripe postero-dorsally; venter light brown. Spinnerets cylindrical and blackish brown.

Male palp (Figs 1B, C, 3 A–C): Tibia short, with several long prolateral macrosetae, retrolateral tibial apophysis extraordinarily elongated, nearly as long as cymbium, and its distal end serrated and with a small hook apically. Bulb long and oval, simple. Conductor membranous, relatively large, originating from the middle part of bulb, covering the base of embolus. Embolus short, twisted, originating from the prolateral top of bulb, mostly hidden under conductor and only its tip visible in ventral view. A small membranous process originating from the retrolateral top of bulb, protecting the embolus together with the conductor (Fig. 3C). Two strong macrosetae situated at the top of cymbium.

Female: Body length 5.45. Prosoma length 2.30, width 1.46; opisthosoma length 3.05, width 1.61. Clypeus height 0.06. Eye measurements and interdistances: AME 0.08, ALE 0.10, PME 0.08, PLE 0.10, AME–AME 0.03, AME–ALE 0.01, PME–PME 0.08, PME–PLE 0.06, ALE–PLE 0.10. MOA anterior width 0.18, posterior width 0.23, length 0.12. Leg spination: femora: I, II, IV d1-1-1, p1-0-0, III d1-1-1, p1-1-0, v1-1-0; patellae: III, IV r0-1-0; tibiae: I p1-0-0, v2-2-2, II p1-0-1, v2-2-1, III d2-2-0, p0-0-1, v2-2-1, r0-1-1, IV d1-0-0, p1-1-1, v1-0-1, r1-0-1; metatarsi: I v2-0-0, II p0-1-0, v2-0-0, III d0-1-1, p1-1-1, v0-0-1, r1-1-2. Leg measurements: I 3.80(1.28, 1.40, 0.68, 0.44), II 3.88 (1.24, 1.44, 0.68, 0.52), III 3.52(1.12, 1.16, 0.76, 0.48), IV 5.28(1.52, 1.80, 1.20, 0.76). Leg formula: IV-II-I-III.

Epigynum longer than wide, with a distinct anterior hood; atrium vertically elongated, and almost as long as epigynum, with the basal part very wide, and abruptly becoming narrow and extending to the anterior part (Figs 2B, 3D); spermathecae reniform, vertically elongated, separated from each other (Figs 2C, 3E).

Remark.

There are very small differences between the holotype female and the newly collected female specimen in the present study: the distal part of atrium is narrower and the basal part wider in the newly collected female specimen (Figs 2B, 3D) than in the holotype (Fig. 6 in Kamura 2011).

Distribution.

China (Hunan, Yunnan), Japan ( Amami-ôshima Is.).