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Arctiidae 
Hyphantria cunea ( Dr ury), the fall webworm 
This inseot was readily controlled with emulsions containing 0.1 
to 1 percent of DDT.— Craighead and Brown (125 ) . 
Fall webworm nests were destroyed by a 3-percent DET dust, all 
the larvae dropping out and falling to the ground within 24 hours.— 
Fluke and Pond ( 157) . 
Cither oniidae 
Anisota rubicunda (F»), the green-striped ^aple worm 
In a Vermont maple-sugar orchard an aerial application of DDT (5 
pounds of DDT in 5 gallons of solvent per acre) used against the gypsy 
moth gave complete control of this maple worm*— Craighead and Brown ( 125 ) • 
In treatments applied from an airplane against the green-striped 
maple worm, the spray was mixed at the rate of DDT 1 pound, cyclohexanone 
1 pint, and a horticultural spray base heavy oil about 7 pints (enough 
to equal 1 gallon of mixed spray) .— Dowden et al. (156 ) • 
Coleophoridae 
Coleophora malivorella Riley, the pistol casebearer 
In preliminary tests with DDT favorable results were obtained in 
the control of this insect on apple.— Baker and Porter (81). 
Crambidae 
Crambus topiariu3 Zeller, the cranberry girdler 
DDT was applied to cranberries in New Jersey as a dust before bloom 
and as a spray to wet the chaff after bloom. It appeared that between 
2,500 and 5,000 gallons of water per acre might be needed to spray the 
chaff with any degree of effectiveness* The length of girdler wounds, 
as percentage of total length of chaff-oovered stems, was 5»8 in an un- 
treated bog, 5.2 and 1.6 in areas treated with sprays containing 12^ and 
25 pounds of DDT per acre, and 2*4 in an area dusted with 50 pounds of 
DDT per aore«— Doehlert (134) • 
Diatraea sacoharalls (F.), the sagarcane borer 
A pyrophyllite dust containing 10 percent of DDT, applied four 
times at weekly intervals at the rate of about 8 pounds per aore-application. 
