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Spargsnothis sulfureana (Clem.), sulfur leaf roller 
An airplane application of 15 pounds of derris dust (4 percent 
of rotenone) to the aore was not effective in killing the larvae in 
New Jersey. — Beckwith (44) « 
Tortrix pronubana Hbn., carnation tortrix moth 
In Scotland the larvae should be sprayed with derris as one of 
the control measures.— Cameron (99) • 
Zygaenidae 
Artona catoxantha (Hmps.), coconut zygaenid 
In oentral Java damage in a number of outbreak centers was pre- 
vented by a single application of derris, but two treatments were 
necessary to suppress some of the outbreaks. Spraying was regularly 
practiced, and a suspension containing 0.3 peroent of rotenone and 
1.5 percent of talc was usually satisfactory. In laboratory tests 
100 percent mortality of fourth-instar larvae was obtained with a 
derris spray containing 0.005 percent of rotenone, and of full grown 
larvae, with one of twice the strength.— Van der Vecht (636 ) • 
Harrisina brillians B. & MoD., the western grape skeletoniter 
If fruit is present, derris dusts or sprays should be used.— 
TCehrle (668) . 
Unidentified Lepidoptera 
Derride is a normal constituent of derris root. It has a de- 
cided killing effeot on caterpillars oonparable to that of rotenone. 
A dusting experiment, conducted by Van der Veoht against oaterpillars, 
with derris powder from which the derride had been extracted, indi- 
cated that tne powder had about the same toxic value as an ordinary 
sample of derris root with 3 peroent of rotenone and 8.1 peroent of 
ether extract.— Meijer and Koolhaas (410 ) . 
Due to wartime conditions in Java talc beoame unavailable for 
use as a diluent in rotenone insecticides. Three looal commercial 
powders, mixed with sufficient derris to yield mixtures containing 
0.75 percent of rotenone, were found to be adequate substitutes for 
talc in laboratory tests against cabbage caterpillars. "Beta" (a fine 
powder similar to pumice) and "Te Be Bee* (a olay powder) were more 
efficient than talo and sufficiently inexpensive.— Verbeek (638). 
