Amblopusa magna Zerche, 1998

[Japanese name: Oo-nokoba-umi-hanekakushi]

(Figs. 17A; 18A & B; 26)

Amblopusa magna Zerche, 1998: 103 (original description; type locality: Russia, Primorskiy Kray, Ryazanovka, 14 km SW Slavyanka); Ahn et al., 1999: 641 (locality record).

Material examined. Japan: Hokkaidô: 36 unsexed, Ishikari-shi, Hamamasu-ku, Horo, 30. IV. 2022, R. Wakimura (cYT) ; 7 unsexed, Ishikari-shi, Atsuta-ku, Gokibiru, 24. IV. 1999, M. Maruyama (KUM) ; 1 male, 4 unsexed, Betsukai-chô, Odaitô, 23. VII. 2020, Y. Tasaku (cYT); 15 unsexed, Kushiro-chô, Senpoushi-mura, 24. VII. 2020, Y. Tasaku (cYT); 6 unsexed, Hamanaka-chô, Mochirippu, 26. IX. 2000, M. Maruyama (KUM); 3 unsexed, ditto, 12. IX. 1999, H. Sano (KUM); Kushiro-shi, Chiyonoura, 14. IX. 2008, M. Nishikawa (KUM); 1 unsexed, Abashiri-shi, Komaba, 20. VI. 2022, Y. Tasaku (cYT); 1 male, 1 female, 30 unsexed, Akkeshi-chô, Akkeshi-ko, 3. VIII. 2022, D. Sumikawa & Y. Tasaku (cYT); 4 unsexed, Wakkainai-shi, Souya-mura, Higashiura, 20. IV. 2022, D. Sumikawa (cYT); 2 unsexed, Samani-chô, Horoman, 2. V. 2023, D. Sumikawa (cYT) .

Diagnosis. It can be easily distinguished from other species of this genus by its large body and darker body color (Fig. 17A).

Distribution. Japan: Hokkaidô; Russia: Primorskiy Kray, Kuril Islands (Fig. 26A).