Japanese beetle


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Japanese beetle
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Mixed Material
United States -- Bureau of Entomology and Plant Quarantine
Bureau of Entomology and Plant Quarantine, U.S. Dept. of Agriculture ( Washington, D.C. )
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aleph - 030255826
oclc - 86173756
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Adult beetles feeding on fruit and leaves, about one-half natural size.
Insert, adult beetle, about twice natural size. Figures below ground represent
seasonal history of the Japanese beetle. Left to right, mature grub (late spring);
pupa; beetle laying eggs (summer); developing grubs (late summer and fall); all
about twice natural size.
(See other side for life history and control)
Bureau of Entomology and Plant Quarantine Picture Sheet No. 4
United States Department of Agriculture

NESE BEETLE III111111111111111111111
(Popillia japonica Newman) 3 1262 08721 6iFl
Life History
Japanese beetles overwinter as grubs, or larvae, in the soil at
depths of 2 to 6 inches. During April they move nearer the surface
and feed on the roots of plants. Early in June the grubs stop feed-
ing, pass through a transformation stage, and then become the adult
beetles. By early July the beetles are present in numbers, flying
about and feeding extensively on the foliage, fruit, and blossoms of
many trees and plants. During July and August the females go
into the ground and deposit eggs; these hatch into small grubs,
which feed on roots of grass and other plants. By fall these larvae
are mostly full grown; as winter approaches they move deeper into
the soil. Grubs are more abundant in turf than in other situations
and cause serious injury to lawns.
Control of the Beetle
Protective or repellent sprays.-The foliage of fruit, shade, and
ornamental trees and shrubs can be protected from beetle attack by
the use of protective or repellent sprays. These should be applied
when the beetles first appear, and additional applications should be
made as needed to maintain a protective coating on all portions of
the plant subject to attack as long as the beetles are present. The
most useful sprays are as follows:
1. Powdered lead arsenate, 10 ounces; wheat flour, 6 ounces; water, 10
gallons (for ornamental trees and shrubs).
2. Powdered lead arsenate, 10 ounces; light-pressed fish oil, 2 ounces;
water, 10 gallons (for ornamental trees and shrubs).
3. Aluminum sulphate, !. pound; hydrated lime, 2 pounds; water, 10 gal-
lons (for ornamental trees and shrubs, bearing apple, plum, and
cherry trees, grapevines, small fruits, and flowering plants).
4. Powdered derris (4 percent rotenone), 5,,2 ounces; water, 10 gallons (for
bearing apple, plum, cherry, and peach trees, bearing grapes and small
fruits, and flowering plants).
Contact sprays.-Contact sprays are of value in killing beetles
if care is taken to actually hit them with the liquid, but they may not
afford satisfactory protection of foliage. The contact sprays in-
clude: Spray 4, listed above; commercial fish-oil soap or a good
grade of household soap, 3 pounds to 10 gallons of water; and
the commercial pyrethrum sprays, at rates recommended by the
Control of Grubs
Lawns can be protected from injury by Japanese beetle grubs
for a 5-year period by making one application of lead arsenate at
the rate of 10 pounds per 1,000 square feet of lawn. The poison
should be mixed with 25 times its volume of moist sand, soil, or
other suitable material, and broadcast by hand.
Cautions in the Use of Lead Arsenate
Lead arsenate is poisonous to man and animals, and children or
animals should not be allowed access to it. Great care should be
taken to avoid getting lead arsenate into the mouth or into cuts or
abrasions of the skin. Grass should be washed thoroughly with a
hose, after the treatment is applied, to remove any poisonous resi-
due. Domestic animals should not be allowed to feed on treated
grass or on or under sprayed trees or shrubbery while any poisonous
residue is visible. 8-12518

October 1938 U. S. Government Printing Office
For sale by the Superintendent of Documents, Washington, D. C. Price 5 cents

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