84 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE, 1 
Tabu 22. Importation <>! parasites <imi predator* into Puerto Rico during the 
fiscal if '//• t9. 
Boat 
pred i 
n r 
Xi, ■ 
2 
• 
1 
- 
1 

2 

3 
1 
1 

1 
1 


5 

1 


1 


D 
lian fruiiilv. . . 

D 
D 
Do 

! pie mealybug. 
Do 
Pink bollwon 
ted States. 
Do 
Trim 
• weevil 
pod borer.. 
United States. 

i In addition, 1 species of dung beetle was imported from Hawaii into Puerto Eticotoaid in horn fly control 
COOPERATION WITH FOREIGN ORGANIZATIONS 
The cooperative work with the entomological branch of the Canadian I >e- 
partment of Agriculture was continued during the year. A total of 250.000 
European corn borer larvae were collected in Japan through funds provided 
by that department, and a portion of the parasites reared oul from this material 
was made available for colonization in the United States. Sawfly cocoons to the 
number of 22,689 were also collected and forwarded to the Canadian Parasite 
Laboratory The parasites reared from this material are to be colonized on the 
spruce sawfly. 
The Canadian Department of Agriculture again provided :i number of colonies, 
comprising L1.600 adults, of Collyria calcitrator Grav. for liberation in thi 
tions of Pennsylvania and Ohio infested with the black wheat-stem sawfly. In 
addition a number of colonics of several species of parasites of the spruce sawfly 
were provided for colonization In New England. 
Through the courtesy of the Department of Agriculture of Fiji ;i consignment 
of 575 ;idnlt beetles of Plaesius favanu8 Frogg., which is predacious on the 
banana root weevil, were secured for colonization In Puerto Rico. 'The Imperial 
College of Tropical Agriculture of Trinidad very kindly provided breeding stock 
of Dasyscapus parvipennis Gal., :i parasite of the cacao thrips which had been 
Imported Into Trinidad from the Gold Coast in 1935. Also, the cooperation of the 
Department of Agriculture of British Guiana made it possible to secure a stock 
of the Amazon fly {Metagonistylum minense Townsend) for use against the 
sugarcane borer. Both of these parasites were for colonization in Puerto Rico. 
Shipments of parasites and predators have been forwarded during the year 
to the countries listed in table -'•'>. 
Taki.k 23. Shipments of parasites <ni<i predators to fort ion countries during the 
fiscal in <tr t9S6 
Country 
S|V. 
\ 1 1 trails ..... 
Oriental fruit inoth 
rntrux (iin-yliraruf 1 
1 >o 
do 
■ tn fruit fly 
do 
Do 
Do 
do 
( 'ottoti worm 
Dm 
do 
•(-(.r Wtlkn. 
Codling motfa 
.vVr fuadridentttQ v. 
