Bull. Natl. Mus. Nat. Sci., Ser. A, 33(2), pp. 67–83, June 22, 2007 Pamphiliid Sawflies (Insecta, Hymenoptera) from Yamanashi Prefecture, Central Honshu, Japan Akihiko Shinohara1, Hirohisa Suda2 and Hideo Takahashi3 1 Department of Zoology, National Museum of Nature and Science, 3–23–1 Hyakunin-cho, Shinjuku-ku, Tokyo, 169–0073 Japan E-mail:
[email protected] 2 2–13–8 Sennari, Sakura-shi, Chiba, 285–0034 Japan 3 876–1–203 Higashiasakawa-machi, Hachioji-shi, Tokyo, 193–0834 Japan Abstract Collection data are given for 36 species of pamphiliid sawflies of the genera Acan- tholyda, Cephalcia, Onycholyda and Pamphilius from Yamanashi Prefecture, central Honshu. Of these, one species of Cephalcia has not been determined and two species of Onycholyda and four species of Pamphilius are newly recorded from Yamanashi Prefecture. Compared with the other well-investigated areas in Honshu, the pamphiliid fauna of Yamanashi Prefecture is very rich, hav- ing the largest number of species in total (the same number as that of Tochigi Prefecture) and in the “northern group” of species. Key words : Hymenoptera, Pamphiliidae, fauna, Yamanashi Prefecture, Honshu, Japan. are summarized and new collection records are Introduction given mainly based on the study of the collection Yamanashi Prefecture, situated in the middle of the National Museum of Nature and Science, of Honshu, is not a large prefecture, occupying Tokyo (NSMT), and the private collection of H. an area of 4,465.37 km2, but its natural environ- Suda (HSC). Other depositories of the material ments are diversified and fairly well preserved. examined are H. Kumamoto collection (HKC), About 78% of the area, ranging from 70 to 3,776 H.