Fig. 11.—Egg of the Meadow Brown Butterfly.
Fig. 12.—Egg of the Speckled Wood Butterfly.
Fig. 13.—Egg of the Vapourer Moth.
It may be surmised from the accompanying illustrations that the form of the egg is always the same for any one species. This is really the case, and consequently an experienced entomologist can often decide on the name of the butterfly or moth that deposited a cluster of eggs he happens to find in his rambles and searchings; but in such decisions he is always greatly assisted by a knowledge of the food plants of the various insects, and sometimes also by the manner in which the eggs are arranged.