-73- 
Ihseots swept from alfalfa were lightly dusted with 3-peroent DDT 
dust and held in an insect net with alfalfa cuttings over night* By 
this method complete kills were obtained of all Lygus hugs, two speoies 
of thrips, and a leafhopper, Bnpoasoa sp*, but it was not effioient 
against other insects. The 3-peroent dust gave no indication of being 
toxic to the Say stinkbug*- Smith (324) * 
A field of Ariiona cotton whioh received one application of a 2- 
peroent DDT dust and fire applications of a 4 peroent DDT-60 percent 
sulfur dust made by airplane, produoed 30 peroent more lint per aore 
than did a field treated with the standard sulfur-paris green mixture, 
and 100 peroent more than did an untreated check plot*— Welker (368 ) • 
Same as for Adelphooorls superbus •— Loftin (247 ) • 
Buschlstus imp! ctlventr is Stal, the brown cotton bug 
Same as for Adelphocorla superbus »— Loftin (247) • 
See Chlorochroa sayi *— Welker (368) • 
Euschistus sarvus (Say) 
This bug is often numerous on cotton, okra, beans, and other crops* 
Practically no mortality occurred within 72 hours after a group of adults 
was dusted with 2 peroent DDT*— Lyle (249) , 
Murgantia histrionloa (Hahn), the harlequin bug 
Though DDT showed promise against caged harlequin bugs, it was not 
effective in the field* Rotenone was very effective and apparently a 
dust containing 0*4 peroent of rotenone and 2 percent of Lethane was as 
good as a stronger mixture*— Bis sell (87). 
Adult bugs carefully held by forceps were touched on the ventral 
side only with fresh dust (Gesarol A-3) or with dust that had been ex- 
posed for 24 hours in an open jar* The bugs were then placed in oages 
with untreated oheok insects for comparison* The fresh dust produoed 
72 percent and 40 peroent better knook-down at the end of 24 and 96 hours, 
respectively, than did the exposed dust*— Swart (145 )* 
Not controlled by a DDT aerosol* — Ditman (133 )* 
In several indoor oage tests all harlequin cabbage bugs died with- 
in 36 to 48 hours when placed on potted kale plants previously dusted 
with a 3-pero«nt DDT dust* Similar lots of bugs on untreated plants were 
alive and active after the same period of time*— Cartwright (108) • 
