-84- 
Coreidae 
Aconthocoris sordidus (Thnb.) 
The control measures recommended against this bug on vegetables 
in Japan are hand collection, spraying with derris in soap solutions, 
and dusting with a mixture of pyrethrum and ash.— Yamazaki (70S , 704 ) . 
Lygaeidae 
Blissus hirtus Montd., the hairy chinch bug 
Experiments with 1- and 0.5-peroent rotenone dusts and tobacco 
dust (l percent of nicotine), applied at the rate of 25 pounds to 
1,000 square feet, were conducted on a very heavy, dense turf. The 
three dusts were about equal in effectiveness and excellent kills 
were obtained by all three.-- Johnson (330 , 331). 
A machine was designed which uses new principles in the appli- 
cation of dusts to turf 8. Economic control may be obtained with one- 
third the amount of 1-percent rotenone dust formerly recommended. 
Rotenone is highly toxic to all stages.— Py ens on (479) . 
NNOR (1:800) applied to turf gave 89 percent mortality of the 
hairy chinch bug, while derris (4 percent of rotenone) gave 92.5 
percent.—Roth and Pyenson (517) . 
Blissus leucopterus Var. insularis Barber ("insularis Barber), a chinch 
bug 
Emulsions of lubricating and fuel oils, strong soap solution, 
diluted pyrethrum extract, and local proprietary dusts of nicotine 
or derris were ineffective against this species infesting lawns in 
Trinidad.— Pi Okies (468) . 
Geocoris moderatus Montd. 
Nysius natalansis Evans 
These insects were found in great numbers in South Africa, where 
their presence was associated with poor turf which was improved by 
treatment with derris.— Omer-Cooker and coworkers (450) . 
Ny8ius turner! Evans 
Liberal applications of derris dust to food plants in Tasmania 
drive away the bugs and protect the plants for 2 to 4 days .--Evans 
(172). 
