Observations on the Chafer Grub Problem in the Lake District

Abstract
1. The Garden Chafer (Phyllopertha horticola) causes extensive deterioration of the fell grassland in the Lake District.2. The flight period of the adult beetles occurs between the end of May and the latter end of June.3. Eggs are laid in the soil at a depth of about 2½ inches, but the depth varies according to the nature of the soil. The eggs take from 27 to 30 days to hatch in the field.