Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . Fig. 66. White marked Tussock-moth: a, female moth on cocoon; 6, younglarva hanging hy thread ; c, female pupa; d, male pupa ; e, male moth. later come forth as moths. These lay eggs for a sec-ond brood, which completes its transformations be-fore winter sets in. The pupa of the female (, c) is larger than that of the male (d). The malemoth differs greatly from the female moth, the for-mer being winged (Fig. 66, e), while the latter iswingless (a). The female crawls upon t
Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . Fig. 66. White marked Tussock-moth: a, female moth on cocoon; 6, younglarva hanging hy thread ; c, female pupa; d, male pupa ; e, male moth. later come forth as moths. These lay eggs for a sec-ond brood, which completes its transformations be-fore winter sets in. The pupa of the female (, c) is larger than that of the male (d). The malemoth differs greatly from the female moth, the for-mer being winged (Fig. 66, e), while the latter iswingless (a). The female crawls upon the top of thecocoon (a) as soon as she emerges from the pupa INJURING THE LEAVES. 135 •state, where, after mating with the male, she depositsher eggs in a single mass and dies. Remedies.—The increase of this insect is greatlychecked by several parasitic enemies, nearly a dozenspecies of two-winged and four-winged flies beingknown to prey upon it. The caterpillars may bedestroyed by spraying the infested trees with thearsenites—Paris green or London purple; or theegg masses may be picked off the bark in wi
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Keywords: ., bookcentury1800, bookdecade1890, bookidi, booksubjectinsecticides
