Neriene aquilirostralis Chen & Zhu, 1989

Li, Jian Yong, Liu, Jie & Chen, Jian, 2018, A review of some Neriene spiders (Araneae, Linyphiidae) from China, Zootaxa 4513 (1), pp. 1-90 : 15

Neriene aquilirostralis Chen & Zhu, 1989

Figs 7–9 , 69

Neriene aquilirostralis Chen & Zhu, 1989: 160 , f. 1–11 (Dmf); Song, Zhu & Chen, 1999: 188, f. 108E–F, O–P (mf).

Material examined. Hubei: Shennongjia Forestry District, Liujiawu , 31.55°N, 110.36°E, 1500m, 22.vi.1986, S. Q. Li and J. Chen leg., 6MM and 24FF (CBEE); Hubei: Luotian County, Tiantangzai National Forest Park, 31.11°N, 115.73°E, 946m, 26.x.2009, X. Xu & H.J. Xie leg., 3MM and 1F ( CBEE) ; Sichuan: Baoxing County, Wulong Town , 30.41°N, 102.77°E, 1058m, 28.vi.2006, J. Chen leg., 1F ( CBEE) ; Yunnan: Jinping County, 22.81°N, 103.24°E, 1234m, 30.viii. 2000, J. Chen leg., 1F ( CBEE) .

Diagnosis: This species is similar to Neriene oidedicata (Van Helsdingen, 1969) in having flat, broad and branched distal arm of paracymbium, distal suprategular apophysis with hook-shaped tip of dorsal arm and membranous ventral tip, the small atrium opening ( Figs 7–8 , 9 C–E, 50–51, 52C–E), but can be distinguished from the latter by the following characters: 1, the tip of terminal apophysis significantly membranous, beak-shaped in N. aquilirostralis , but not in N. oidedicata ( Figs 7F , 8E , 50E , 51D ); 2, the vulva square-shaped in N. aquilirostralis , but trapezoid-shaped in N. oidedicata ( Figs 7 G–H, 9D–E, 50G–H, 51D–E).

Description: The measurements see Chen & Zhu (1989). Male palp ( Figs 7 A–C, 7E–F, 8): Tibia shorter than cymbium, with several long spines on lateral and ventral surfaces, and one prodorsal, two retrodorsal trichobothria. Paracymbium developed, U-shaped, with two flat, broad branches distally, both branches with sharp ends. Distal suprategular apophysis slender, distally bifurcate and significantly curved backwards, dorsal part with narrow hooked tip, ventral part significantly broader than dorsal part. Lamella well-developed, with four projections: lateral one long, with a slightly wide, flat end curved upwardly, and posterior one slightly long and slender; anterior one large, blunt, with round margin, and with a small apophysis anteriorly; dorsal one short. Terminal apophysis spiral, with about two and a half coils, with the tip significantly membranous, beak-shaped. Embolus with long and slender appendage, and distal spermduct-tooth, appendage pigmented at base next to tooth but without second tooth. Male habitus as in Fig. 9B .

Epigynum ( Figs 7D , 9C ): In ventral view, atrium opening small. Parmula arising from dorsal wall, tip of parmula curved in ventral direction. Vulva ( Figs 7 G–H, 9D–E): Vulva as long as wide; copulatory grooves starting laterally, with about two and a half coils; fertilization grooves enter the spermathecae, with about two and a half coils; turning-points situated mesally, pointing towards sides; spermathecae long, slender, pointing mesad. Female habitus as in Fig. 9A .

Distribution: China (Hainan, Hubei, Hunan, Sichuan, Yunnan) ( Fig. 69 ).

Figures

FIGURE 7. Neriene aquilirostralis Chen & Zhu, 1989, drawings based on specimens from Tiantangzai National Forest Park, Hubei. A, Pedipalp, prolateral. B, Suprategulum, retrolateral. C, Pedipalp, retrolateral. D, Epigynum, ventral. E, Embolus, retrolateral. F, Terminal apophysis, retrolateral. G–H, Epigynum, cleared. G, Ventral. H, Dorsal. Scale bars, 0.2 mm.

FIGURE 8. Neriene aquilirostralis Chen & Zhu, 1989, photos based on male specimen from Tiantangzai National Forest Park, Hubei. A–C, Pedipalp. A, Prolateral. B, Retrolateral. C, Ventral. D, Suprategulum, retrolateral. E, Terminal apophysis, retrolateral. F, Embolus, retrolateral. Scale bars, 0.2 mm.

FIGURE 9. Neriene aquilirostralis Chen & Zhu, 1989, photos based on specimens from Tiantangzai National Forest Park, Hubei. A, Female habitus, dorsal. B, Male habitus, dorsal. C–E, Epigynum. C, Ventral, on the body. D, Ventral, cleared, white arrow indicating the start of copulatory goove. E, Dorsal, cleared. Scale bars, A, B, 1 mm; C, D, E, 0.2 mm.

FIGURE 50. Neriene oidedicata (van Helsdingen, 1969), drawings based on specimens from Bawangling Mountain National Nature Reserve, Hainan. A, Pedipalp, prolateral. B, Suprategulum, retrolateral. C, Pedipalp, retrolateral. D, Epigynum, ventral. E, Terminal apophysis, retrolateral. F, Embolus, retrolateral. G–H, Epigynum, cleared. G, Ventral. H, Dorsal. Scale bars, A, B, C, E, F, G, H, 0.2 mm; D, 0.5 mm.

FIGURE 51. Neriene oidedicata (van Helsdingen, 1969), photos based on specimen from Bawangling Mountain National Nature Reserve, Hainan. A–C, Pedipalp. A, Prolateral. B, Retrolateral. C, Ventral. D, Terminal apophysis, retrolateral. E, Embolus, retrolateral. F, Suprategulum, retrolateral. Scale bars, 0.2 mm.

FIGURE 69. Map with sampling localities for each Neriene species. TTZ: Tiantangzai National Forest Park, Luotian County, Hubei Province; BWL: Bawangling Mountain National Nature Reserve, Hainan Province.