A Study of the White Marked Tussock Moth

Early in the winter of 1921-22 it was observed that egg masses of the white marked tussock moth, Hemerocampa leucostigma Smith and Abbot were unusually abundant. Taking advantage of this opportunity it was planned to make a careful study of the life history of that interesting insect. This insect is of considerable economic importance in that the larvae when abundant defoliate trees of various species