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Psyllldae 
Paratriosa cockerelll (Sulc), the potato psyllid 
Gesarol A-3 dust gave better results than sulfur- calcium arsenate 
or sulfur-basic copper arsenate dusts in tests at Las Vegas, N« Mex.^ in 
1944. —Eyer (147). 
In a large field test in Nebraska a 3-percent DDT dust and a spray 
of 4 pounds of 10 peroent DDT per 100 gallons of water were equally as 
effective as the sulfur compounds*— Tate et al. (342 ) . 
Five applications of a 3-percent DDT pyrophyllite dust applied at 
the rate of about 35 pounds per acre per application or five applications 
of a spray containing 4 pounds of 10-percent EOT in pyrophyllite per 100 
gallons of water applied at the rate of about 125 gallons per aore per 
application greatly reduced the number of both adults and nymphs on po- 
tato plants in western Nebraska. DDT remained effective against potato 
psyllids under field conditions for a relatively long period of time»— 
Hill (209). 
One application of Gesarol A-3 dust gave an average control of 78.5 
peroent in two tests.— Hibbs (208) . 
Psylla buxl (L.), the boxwood psyllid 
A dust containing 0.8 peroent of BDT (A-20 in sulfur) applied on 
adult boxwood psyllids in two insectary cage tests in July killed 62 
and 69 percent of the insects in 38 hours and 81 and 97 percent in 50 
hours. There was no revival noted at the end of 72 hours.— Underhill ( 349 ) . 
Psylla pyricola Foerst., the pear psylla 
In one orchard dormant miscible oil, containing DDT in solution, 
applied to give 5.12 ounces of DDT per 100 gallons, showed no advantage 
over the same oil containing no DDT in control of egg deposition or de- 
velopment of first-brood infestation. In test orchard No. 2, spraying 
was more timely, no egg laying having occurred prior to application. The 
DDT formulation reduoed egg laying and first-brood nymphs as compared 
with oil alone. There was no adverse effect on buds, bloom, foliage, 
yield, or fruit site or condition from DDT in this formulation.—Cleveland 
(1U). 
HEMIPTERA 
(Suborder Heteroptera) 
Anthocoridae 
Orius insidiosus (Say) 
