. Economic entomology for the . a, Ceresa bubalus, ovipositing in slits b ; the The dog-day harvest-fly, eggs, if, arranged as at c; old, scarred punc- Cicada tibiceji. tures shown at e. snapping noise whenever the bottom is forced to change from convex inwardly to convex outwardly. By an exceedingly rapid snapping of the convex "drum" of the cicada, the continuous shrilling sound is produced, intensified and modified by the vari- ous tense membranes more or less surrounding it. The most famous species of this family is the "'periodical cicada," or " seventeen
. Economic entomology for the . a, Ceresa bubalus, ovipositing in slits b ; the The dog-day harvest-fly, eggs, if, arranged as at c; old, scarred punc- Cicada tibiceji. tures shown at e. snapping noise whenever the bottom is forced to change from convex inwardly to convex outwardly. By an exceedingly rapid snapping of the convex "drum" of the cicada, the continuous shrilling sound is produced, intensified and modified by the vari- ous tense membranes more or less surrounding it. The most famous species of this family is the "'periodical cicada," or " seventeen-year locust," Cicada septe7idecim. It is of especial interest from the unusually long larval period, re- maining in the Middle and Northern States sixteen years beneath
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublishernp, bookyear1896
