Opopaea syarakui ( Komatsu, 1967 )

Suzuki, Yuya, Hidaka, Ryota & Tatsuta, Haruki, 2023, Revision of goblin spiders (Araneae: Oonopidae) in the Nansei Islands, Southwest Japan, with description of a new species, Zootaxa 5323 (2), pp. 216-242 : 227

Opopaea syarakui ( Komatsu, 1967)

Fig. 5G–P

Gamasomorpha syarakui Komatsu, 1967: 46 , text-f. 1, fig. 1–8, female holotype from Tokushima, Japan; not examined.

See the World Spider Catalog (2023) for the complete taxonomic list.

Materials Examined. Izena Island (Okinawa Pref.): 1 male (FB, per. coll.), dry forest litter along the road (26°54'56.4"N, 127°56'34.2"E), Izena, Shimajiri District , 24-II-2021, F. Ballarin, leg. Kumamoto Pref. : 1 female (NSMT-Ar 21915), Sugawara Shrine (32°48'40.6"N, 130°44'38.2"E), Hotakubohonmachi, Higashi-ku , Kumamoto City , 24-III-2022, R. Hidaka leg. ; 1 male, Sugawara Shrine (32°48'40.6"N, 130°44'38.2"E), Hotakubohonmachi, Higashi-ku , Kumamoto City , 4-IV-2022, R. Hidaka leg.

Diagnosis. Opopaea syarakui resembles O. furcula Tong & Li, 2010 in having the following combination of characteristics: body reddish-orange, dorsum of carapace lacking cps and pt distinctively thicker and longer than cb, but can be distinguished by the following features: usr presents on the anterior side of the abdomen of O. syarakui ( Fig. 5K, P ), while absent in O. furcula ( Fig. 4D in Tong & Li 2010); triangular pd with distinctively sclerotized margins on the epigastric region of O. syarakui ( Fig. 5O ), while rounded and shallow pd in O. furcula ( Fig. 4G in Tong & Li 2010). Opopaea syarakui is also similar to O. media Song & Xu, 1984 in general appearances and the shape of pd, but can be distinguished by the shape of cb: ventral side of cb slightly narrower proximally in O. syarakui ( Fig. 5J , also see Figs. 4 , 5 in Komatsu 1967), while suddenly narrower proximally in O. media ( Fig. 5 in Song & Xu 1984).

Description. See Ono (2009) for further details.

Distribution. Korea, Japan. Also see Fig. 11 and Table 2 for details of distribution in the Nansei Islands.

Habitat. In Japan, this species was collected from litter layers and tree barks.

Figures

FIGURE 4. Opopaea cornuta Yin & Wang, 1984 (A–E male: NSMT-Ar 21911 and F–H female: NSMT-Ar 21911 from Okinawa Island) A, F Habitus, dorsal view. B Prosoma, lateral view. C Prosoma, frontal view. D Left palp, prolateral view. E Left palp, retrolateral view. G Epigastric region, ventral view. H Abdomen, frontal view. ap—apodeme, cb—cymbiobulbus, cps—carapace posterolateral spike, fm—femur, pt—patella, pds—pedicel tube dorsolateral spikes, psr—paired scutuml ridges. Scale bars: 0.5 mm (A–C, F); 0.1 mm (D, E, G, H).

FIGURE 5. Opopaea deserticola Simon, 1891 (A–C male: NSMT-Ar 21912 from Okinawa Island and D–F female: NSMT-Ar 21913 from Yonaguni Island) and Opopaea syarakui (Komatsu, 1967) (G–K male: FB, per. coll., from Izena Island and L–P female: NSMT-Ar 21915 from Kumamoto Prefecture).A, D, G, L Habitus, dorsal view. B Prosoma, lateral view. H, M Habitus, lateral view. I, N Habitus, ventral view. C, J Left palp, retrolateral view. E, O Epigastric region, ventral view. F, K, P Abdomen, frontal view. Abbreviations: cb—cymbiobulbus, fm—femur, pt—patella, pds—pedicel tube dorsolateral spikes, psr—paired scutuml ridges. Scale bars: 0.5 mm (A, D, G–I, L–N); 0.25 mm (B, F, K, O, P); 0.1 mm (C, E, J).

FIGURE 11. Geographic localities of the Nansei Islands examined in this study.