Forest entomology . Fig. g.—First emergence of Tortoiseshell Butterfly from pupal case. (Flatters.) the wings are slightly more expanded ; and in figs. 8 and 9 we seea representation of the fully developed butterfly. The whole process. Fig. 7.—Emergence of Tortoiseshell Butterfly more fully advanced. (Flatters.) of development, which is chiefly a question of wing expansion, takesat most only a few hours. 8 FOREST ENTOMOLOGY. In many cases where we have incomplete metamorphosis, the insectis injurious in all its respective stages, as, for instance, in Aphidseand Cicadae. On the other hand, when
Forest entomology . Fig. g.—First emergence of Tortoiseshell Butterfly from pupal case. (Flatters.) the wings are slightly more expanded ; and in figs. 8 and 9 we seea representation of the fully developed butterfly. The whole process. Fig. 7.—Emergence of Tortoiseshell Butterfly more fully advanced. (Flatters.) of development, which is chiefly a question of wing expansion, takesat most only a few hours. 8 FOREST ENTOMOLOGY. In many cases where we have incomplete metamorphosis, the insectis injurious in all its respective stages, as, for instance, in Aphidseand Cicadae. On the other hand, when the metamorphosis is com-plete, we find the insect injurious in larval and perfect stages, or
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