Orchestina flava Ono, 2005

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 : 239

Orchestina flava Ono, 2005

Fig. 10F–L

Orchestina flava Ono, 2005: p.38 , fig. 1–10, male holotype, female allotype and male and female paratypes from Okinoerabu Is., Japan; not examined; Ono, 2009: 101, fig. 5–11.

Materials examined. Yakushima Is.: 1 male 7 females (FB. per. coll.), broadleaf forest litter (30°22'57.3"N, 130°37'28.2"E), Koseda , Kagoshima Pref., 23-IX-2021, F. Ballarin leg. ; 1 female (FB. per. coll.), under rocks and plants on a sandy seashore (30.40742N, 130.43409E), Inakahama Beach, Nagata , Kagoshima, 26-IX-2021, F. Ballarin leg. Okinawa Is .: 1 female, Yona, Kunigami Village, Kunigami District , 19-III-2022, Y. Suzuki leg. Aka Is. : 10 males 10 females, grassland at forest side (26°11'54.5"N, 127°16'55.7"E), Aka, Zamami Village, Shimajiri District , Okinawa, 16-III-2022, Y. Suzuki leg. Iriomote Is. : 1 male 1 female (NSMT-Ar 21924), Uehara, Taketomi Town, Yaeyama District , Okinawa pref., 3-XI-2021, Y. Suzuki leg.

Diagnosis. According to Ono (2005), O. flava resembles O. thoracica Xu, 1987 but can be distinguished by the shape of the apophysis of the male maxilla, the size of the tibia of the male palp, and the shape of the female genitalia. This species is also similar to O. bialata Liu, Xiao & Xu, 2016 in general appearance and the shape of the male palp, but can easily be differentiated by the shape of male endites and sperm ducts ( Figs. 3 , 8 in Ono 2005 vs. Fig. 6F , 7A in Liu et al. 2016).

Description. See Ono (2005) for further details.

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

Habitat. This species was collected from various habitats, such as litter layer in forests and bushes at forest sides.

Figures

FIGURE 3. Xyphinus karschi (B̂senberg & Strand, 1906) (A–E male: NSMT-Ar 21909 and F–H female: NSMT-Ar 21910 from Okinawa Island, I female from Kumamoto Prefecture). A, F Habitus, dorsal view. B Habitus, lateral view. C, G Habitus, ventral view. D Left palp, dorso-prolateral view. E Left palp, retrolateral view. H, I Epigastric region, ventral view. Scale bars: 0.5 mm (A–C, F, G); 0.1 mm (D, E, H, I).

FIGURE 6. Ischnothyreus narutomii (Nakatsudi, 1942) (A, B, D–F male: FB, per. coll., from Kanagawa Prefecture; C, G male: FB, per.coll., from Yakushima Island; H, I, K female: FB, per. coll., from Kanagawa Prefecture; J, L female: FB, per. coll., from Yakushima Island). A, C, H, J Habitus, dorsal view. B, I Habitus, lateral view. D Carapace, frontal view. E Left palp, dorsal view. F, G Left palp, retrolateral view. K, L Epigastric region, ventral view. Abbreviations: 0.5 mm (A–C, H–J); 0.2 mm (D); 0.1 mm (E–G, K, L).

FIGURE 7. Ischnothyreus peltifer (Simon, 1891) (A–E male and F–H female: NSMT-Ar 21918 from Iriomote Island) and Ischnothyreus velox Jackson, 1908 (I–M male and N–P female: NSMT-Ar 21919 from Shimoji Island).A, F, I, N Habitus, dorsal view. B, G, J, O Habitus, lateral view. C Carapace and chelicerae, frontal view. D Carapace and chelicerae, lateral view. E, K Left palp, retrolateral view. L Left palp, dorsal view, M Left palp, prolateral view. H, P Epigastric region, ventral view. Arrows in Fig. 7E and 7L–M indicate a triangular lobe and a thin appendix, respectively. Scale bars: 1.0 mm (A, B, F, G, N, O); 0.5 mm (I, J), 0.2 mm (C, D); 0.1 mm (E, H, K–M, P).

FIGURE 8. Ischnothyreus ogatai sp. nov. (A–D Holotype female: NSMT-Ar 21921and E–L Paratype male: NSMT-Ar 21922 from Iriomote Island) A, E Habitus, dorsal view. B, F Habitus, ventral view. G Habitus, lateral view. C Epigastric region, ventral view. D Epigastric region, clarified, ventral view. H Carapace and chelicerae, frontal view. I Chelicerae, posterior view. J Left palp, prolateral view. K Left palp, dorsal view. L Left palp, retrolateral view. Scale bars: 0.5mm (A, B, E–G); 0.1 mm (C, D, I–L).

FIGURE 10. Heteroonops spinimanus (Simon, 1892) (A–E female: NSMT-Ar 21923 from Okinawa Island) and Orchestina flava Ono, 2005 (F–I male and J–L female: NSMT-Ar 21924 from Iriomote Island).A, J Habitus, dorsal view. B Habitus, ventral view. C Habitus, lateral view. F Carapace, dorsal view. D, G, K Carapace, frontal view. C Habitus, lateral view. E, L Epigastric region, ventral view. H Left palp, ventral view. I Left palp, dorso-retrolateral view. Scale bars: 0.5 mm (A–D, J); 0.2 mm (F, G, K); 0.1 mm (E, H, I, L).

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