Synopsis of Andrena (Andrena) of Japan (Hymenoptera, Andrenidae) Part I

Japanese species of the subgenus Andrena Fabricius of the genus Andrena are revised. Sixteen species are recognized, including 3 new species and 1 newly recorded species. In this paper (Part I ) nine species are treated. Two new species, Andrena (Andrena) mali and A . (A.) sakagamii are described and A. (A.) apicata Smith is recorded from Japan for the first time, and is represented by a new subspecies, A. (A.) apicata aino. Andrena (A.) bombifomzis Yasumatsu et Hirashima is synonymized with A. (A.) nawui Cockerell based on color variation in female hairs and male morphological characters. A color variation of the hairs in A. (A.) mikado Strand et Yasumatsu is figured and tabled. A key is presented for the Japanese species of Andrena (Andrena). The distribution map, floral records and flight records of each species are presented