XV.—The Formation of the Germ-Band in the Egg of the Holly Tortrix Moth, Eudemis nævana (Hb.)

Abstract

During the spring of 1916, while making observations from an economic point of view on the Holly Tortrix Moth, Eudemis nœvana (Hb.), I found that, owing to the transparency of the egg and its flattened form, the development could be followed in the living egg in a general way with unusual clearness.Investigations have been carried out on the embryology of about eighteen species of Lepidoptera, but as far as I am aware no account has been published of the embryology of the Tortricidæ.