抄録
The Thyrididae are a small family and 13 species belonging to seven genera have only been recorded from Japan. This paper deals with the classification of the pupae of eight species belonging to five genera of Thyrididae. Only Herdooics is very different from the others in this family not only in the larvae (Mutuura, 1958) but also in the pupae; however, it is considered that this genus is somewhat correlatical to most of Thyridid-genera. The pupae of Thyrididae excluding Herdooia are allied to those of Pyraustidae, especially in Epipasehiinae and Pyralinae, but are easily distinguishable from them by the forewing extending to the 5th abdominal segment. On the other hand, Herdonia is similar to Alucitidae and Pyraustid Schoenobiinae but is distinguished from Alucitidae in that the forewing extends to the 4th abdominal segment and the prothoracic leg is longer than the maxilla, and from Sehoenobiinae in that the labial palpus is wanted, the prothoracie coxa and troehanter never meet on the meson and the 8th abdominal spiraele is situated more dorsad. Moreover, it is very characteristic of Thyrididae that the appendix of prothoracic spiracle is present in some genera. The author is obliged to Messrs. Toshihisa Saito, Osaka, and Rikio Sato, Niigata, for the offering of the specimens.
