The ruficornis species group of genus Nomada in Japan is taxonomically revised. Thirty species are recognized, including two new species and one species newly recorded from Japan. Thirty-two species and two subspecies are synonymized. In comparison with the faunas of European countries, the fauna of the Japanese Nomada is moderate in terms of the number of species, and is characterized by (1) a rich roberjeotiana species group, and (2) the absence of the integra and superba species groups, which are distributed widely in the Palearctic region.
Twenty-five species of the genus Nomada collected by the Kyushu University Expedition in Central Asia from 2000 to 2004 are reported. Twelve species are recorded from Kazakhstan and one from Kyrgyzstan for the first time, respectively.
The furva species group of the genus Nomada in Japan is taxonomically revised and the following three species are recognized: N. okubira Tsuneki, 1973, stat. nov., N. pulawskii Tsuneki, 1973, and N. taicho Tsuneki, 1973. Nomada okubira is raised to species rank, and N. etigonis Tsuneki, 1986, is synonymized under N. okubira. Detailed illustrations of male terminalia are provided for N. okubira and N. taicho. A key to the Japanese species is provided.
A reference database file, TABR, based on tropical Asian bees was constructed and is available to the public via the Internet. Each record is composed of 11 items, and consists of scientific names (family, genus and species), distribution data, type designation with sex, type locality, type depository, source of the original description, synonymy, references and notes. A home page and an example of a search of the TABR database is presented. It is administered by a SIGMA management system. A user can access the database file by visiting the following URL: http://konchudb.agr.agr.kyushu-u.ac.jp/ tabr/.
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