Abstract
Pseudodoxia achlyphanes (Meyrick) was originally described from a single female specimen taken at Tokyo, Japan, as referable to the genus Ciyptolechia. It is common in Kinki district (Honsyu), but the immature stages of this species have not been recorded. I have recently found the larvae of the species feeding on the dead leaves of some deciduous plants, living in the long, narrow-conical cases. In this paper I wish to describe the morphological characters of the immature stages as well as of the adult. Having examined the genitalia, I have come to the conclusion that this species should be transferred from the genus Cyptolechia Zeller to Pseudodoxia Durrant. Before going further, I wish to express my hearty gratitude to Dr. S. Issiki, Professor Emeritus of University of Osaka Prefecture, for his guidance in my study. Thanks are also due to Dr. S. Moriuti, University of Osaka Prefecture, for reading the original manuscript.
