Nippononeta kurilensis Eskov, 1992

Yan, Ming, Liang, Xiaokai & Tu, Lihong, 2015, On the desmitracheate " micronetine " genus Nippononeta Eskov, 1992 (Araneae, Linyphiidae), ZooKeys 484, pp. 95-109 : 99-100

Taxon classification Animalia Araneae Linyphiidae

Nippononeta kurilensis Eskov, 1992

Nippononeta kurilensis Eskov, 1992: 159, f. 27-30 (Dmf); Ono et al. 2009: 318, f. 899-902 (mf).

Material examined.

1♂ and 1♀ (CNU), Russia, Sakhalin Island, near Novoalexandrovsk, 11 Sept. 1992, A. Basarukin leg.

Diagnosis.

The male of Nippononeta kurilensis is distinguished from Nippononeta coreana and all other Nippononeta species by: 1) the absence of proximal tibial process (Fig. 1A, D), present in the latter (Fig. 4 A–B); 2) the outer margin fold of the U-shaped paracymbium is continued with the distal arm in Nippononeta kurilensis (Fig. 1A, D), only a small pointed tooth in Nippononeta coreana (Fig. 4 A–B); 3) the anterior sclerites of lamella characteristica with smooth margin in Nippononeta kurilensis (Fig. 1F), while that in Nippononeta coreana serrated (Fig. 4D), and 4) the single embolus basal tooth hook-shaped in Nippononeta kurilensis (Fig. 1F), whereas in Nippononeta coreana the embolus has three basal teeth, one of them spine-like (Fig. 4E). The female can be distinguished by the appearance of epigynum: diamond shaped in Nippononeta kurilensis (Fig. 2A), T-shaped in Nippononeta coreana (Fig. 5).

Description.

Somatic and genital characters as in the genus description.

Distribution.

Russia (Sakhalin, South Kuril Islands) and Japan (Hokkaido).