Oedothorax sexmaculatus, SAITO & ONO, 2001 INCERTAE

Lin, Shou-Wang, Lopardo, Lara & Uhl, Gabriele, 2022, Evolution of nuptial-gift-related male prosomal structures: taxonomic revision and cladistic analysis of the genus Oedothorax (Araneae: Linyphiidae: Erigoninae), Zoological Journal of the Linnean Society 195, pp. 417-584 : 553

‘ OEDOTHORAX’ SEXMACULATUS SAITO & ONO, 2001 INCERTAE SEDIS

Oedothorax sexmaculatus Saito & Ono, 2001: 5 , figs 5–9 (Dmf).

Oedothorax sexmaculatus Ono et al., 2009: 284 , figs 343–347 (mf).

Type material: Holotype: Japan: Hunshu , Fukuschima Pref., Yama-gun , Azuma-yama Mts., Jododaria, ♂, 11.vi.1986, leg. K. Kumada (NSMT-Ar 4572, not examined) . Paratypes: same data as holotype, 5♂ 6♀ (NSMT-Ar 4573–4574, not examined); Gunma Pref., Tone-gun, Katashina-mura, Marunuma , 1♂ 1.vi.1983, leg. H. Saito (NSMT-Ar 4575, not examined) .

Diagnosis:

Males: This species can be distinguished by the variegated opisthosoma, the palpal apophysis and the depiction of the bulbal structure in figures 8 and 9 in Saito & Ono (2001), in which the individual structures of the embolic division are unfortunately not clearly recognizable.

Females: This species can be identified by the dorsal pattern of opisthosoma with six dark patches, and the epigynal external morphology illustrated in figure 9 in Saito & Ono (2001).

Distribution: Japan: Honshu.

Remarks: The description of Saito & Ono (2001) is in accordance with the general combination of somatic characters of Oedothorax , Mitrager and other related taxa. Although the configuration of the embolic division is not fully recognizable in their drawings, the embolus seems to be prolaterally spiralled (fig. 8 in Saito & Ono, 2001), but the ARP tip is not pointed at tip and not spiral as in Oedothorax ; its PC has a clearly broader distal part (fig. 6 in Saito & Ono, 2001) than in Oedothorax . The six distinct spots on the opisthosoma is seen neither in Oedothorax s.s. nor in Mitrager . Due to these dissimilarities, this species most probably belongs to another genus.