m its
activity and habit of jumping it is known as the flea-beetle (_Haltica
chalybea_). The vine is seldom seriously injured by this pest but many
buds are destroyed, causing the loss of the fruit that should have
developed from the buds. It is true that new buds often develop after
the injury, but these, as a rule, produce only foliage.

[Illustration: FIG. 40. Eggs of grape-vine flea-beetle.]

The life history of the flea-beetle is such that the pest is not hard
to control, the chief steps in its development being as follows: The
beetles deposit small orange-colored eggs, cylindrical in form,
illustrated in Fig. 40, about the buds and in crevices of the bark of
the canes in May or June. Most of these eggs are hatched by the middle
of June. The larvae feed upon the foliage until about July first and
then crawl to the ground in which they form cells and pupate. The
latter part of July the adults emerge and seek wild vines upon which
they feed, entering hibernation rather early in the fall. The beetles
hibernate under leaves, in rubbish and in the shelter of the bark of
trees and vines, but emerge in the warm days the following spring to
seek vineyards.

Two methods of control have been developed to keep this pest under.
The vines should be sprayed with three pounds of arsenate of lead in
fifty gallons of water when the larvae are feeding on the foliage; or
the beetles when feeding may be knocked into a pan containing a
shallow layer of kerosene. The former is the cheaper and more
effective method provided the grape-grower has the foresight to
discover the larvae, since the larvae of this summer produce the beetles
that will destroy the buds next spring. When the adults migrate from
wild vines, or the larvae were not destroyed in the vineyard,
collecting the adults is the only practical method. The destruction of
wild vines near a vineyard helps to give immunity from this pest.

_The rose-chafer._

The rose-chafer (_Macrodactylus subspinosus_), a long-legged beetle of
a yellowish-brown color, about a third of an inch in length, often
appears in vineyards in vast swarms toward the middle of June in
northern states and about two weeks earlier in southern states east of
the Rocky Mountains. Often they overrun gardens, orchards, vineyards
and nurseries, and usually, after having done a vast amount of damage
in the month of their devastating presence, the beetles disappear as
suddenly as they came. Vineyards on or near