Taxa included

Okumura, K. I. (2023b). First recorded species of spiders from Chiba and Ibaraki Prefectures. Kishidaia 123: 62-63.

Taxon
Gnaphosa potanini Simon, 1895 (Gnaphosidae) 63, f. 4, (m), Gnaphosa potanini
Neoantistea quelpartensis Paik, 1958 (Hahniidae) 63, f. 1, (f), Neoantistea quelpartensis
Gongylidioides communis Saito & Ono, 2001 (Linyphiidae) 63, f. 2, (f), Gongylidioides communis
Robertus nojimai Yoshida, 2002 (Theridiidae) 63, f. 3, (f), Robertus nojimai

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