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Abstract
A new species of Oyamia, O. cryptomeria, is described from western Honshu, Japan. The other two Japanese species, Oyamia lugubris (McLachlan) and O. seminigra (Klapálek), are redescribed. The new species is distinguished from the other species of Oyamia by the male genitalia and punctures on the egg. The O. seminigra complex is proposed for the new species and O. seminigra. The two species in the complex and the other Japanese species, O. lugubris, share some characteristics of larvae and male genitalia. An only single representative of the genus from the continent, O. nigribasis Banks, has different characteristics from the Japanese species. An additional characteristic of the genus is a feature of the mouthparts; i.e. a row of setae on the inner side of the larval lacinia.
Acknowledgements
We thank Dr Peter Zwick (Schlitz, Germany) for his kind examination of the O. lugubris holotype at our request and for careful comparison of our figures with the types of O. lugubris, O. gibba and O. seminigra. We are also grateful to Professors emer. T. Kawai and T. Oishi (Nara Women's University) and Professors R. Ishikawa and T. Yamasaki (Tokyo Metropolitan University) for their suggestions and encouragement. We are very thankful to the reviewer for his careful advice and to Dr A.H. Staniczek (Staatliches Museum für Naturkunde Stuttgart, Germany) for his kind editorial consideration. Special thanks to Dr K. Masunaga, curator of the LBM, for his kind help in loaning and depositing the materials. Material examined in this study was gifted from these collectors whom we also cordially thank: M. Kaihatsu (Kyoto), N. Kobayashi (Asahi Tech. Inst., Tokyo), H. Maruyama (Hyogo), H. Morita (Mie), H. Moriya (Sagamihara City Museum), M. Sakaguchi (Yokohama), K. Satake (Tsukuba) and K. Tani (Nara).