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Pyraustidae 
Diapftania h yalinata (L.), the raelonworm 
D. nitidalla (Stoll), the pickleworm 
In tests oonducted for the control of these insects on cantaloups, 
a dust containing 3 percent of DDT gave very promising results •— 
Walker (366 , 366) . 
Three applications of Gesarol A-3 dust at the rate of 30 pounds 
per acre reduced cantaloups infested with the melonworm to 2*6 percent* 
No burning of plants resulted*- Ewart (145 ) • 
A 3-peroent DDT dust was effective against pickleworms on squash 
and cucumber* Untreated cantaloup plots produced 359 cantaloups, 12 of 
which were damaged by the pickleworm and 165 by the granulate outworn. 
Feltia subterrane a (F«) • Plots dusted four times with DDT produced 
358 cantaloups, only 1 of which was danaged by the piokleworm*— Cartwright 
(108), 
A 3-peroent DDT dust was about equal to a 33-peroent cryolite dust 
against piokleworas in field tests in North Carolina* A 1-peroent DDT 
dust gave considerable control*— Pulton (162) * 
An acre ef oantaloups infested with piokleworas was divided into 
60 plots, dusted*, and each treatment replioated 10 times* Dusting be- 
gan at blooming and was continued at weekly intervals until 10 days 
before harvest* Pour applications were made at concentrations rang- 
ing from 15-20 pounds per acre to 25-30 pounds per aore. The average 
percentage of infested melons at harvest was as follows: 1-peroent 
DDT 5*5, 2-percent DDT 4*4, 3-percent DDT 4*4, l/2-percent rotenone 8.9, 
30-percent eryolite 7*3, and cheok 11.2*— Lyle (249 ) . 
Hellula undali s (F*) , the cabbage webworm 
Same as for Triohopluala ni.— White (373) • 
Loxostege aimilalis (Guen.) , the garden webworm 
A DDT aerosol gave excellent kills of garden webworm on spinach.— 
Ditman (133) • 
Pachyzanola phaeopt oralis (Guen.) , a grass webworm 
A 10-peroent DDT dust applied to a lawn at the rate of 10 pounds 
per aore killed more than 90 peroent of these larvae. The principal 
grass in this lawn was oarpetgrass (Axonopus oompressua ( Swart*.) Beauv.).- 
Ingran jat al • (222) • 
