Published online by Cambridge University Press: 31 May 2012
During the summers of 1948 and 1949 the writer investigated the biology of the maple leaf cutter, Paraclemensia acerifoliella (Fitch), near Merivale, Ontario. Various aspects of the bionomics of the stages of the maple leaf cutter are summarized in this paper. Unpublished material in the annual reports prepared by Mr. J. J. de Gryse were kindly made accessible; data are quoted from them and acknowledged herein. Sincere thanks are extended to Howard A. Tripp for his assistance in recording data during field investigations.