Hawaii 
Haw aii 
Miss. 
= 43 = 
Investigations of the Establishment and Spread of 
Parasites, Predators, and Diseases Introduced into Hawaii 
and their Importance in Reducing the Abundance of and 
Damage by Dacus Dorsalis, D. Cucurbitae and Ceratitis 
Capitate. “Io acteenine (L) Wiether set wher Tatroticed 
parasites, predators and diseases on Dacus corsalis, 
De. curcurbitae and Ceratitis capitata beca become established 
after they are released on the different islands; (2) rate 
of spread of introduced beneficial enemies; (3) whether 
enemies bring about economic control under all widely 
different ecological conditions; (4) optimum ecological 
conditions for different enemies introduced so that 
cultural practices may be used that aid enemies; and 
(5) whether further search is needed for enemies especially 
adapted to certain ecological conditions under which 
recently introduced enemies may not thrive. 
Ent. 960-5 Coop. ARS 
Chemical Control of Fruit Flies in Hawaii. 
1. Laboratory Studies on Toxicity of Insecticides to Fruit 
Flies. 2. Field Studies. To determine the toxicity of 
chemicals to fruit flies, and (2) develop satisfactory 
methods for controlling fruit flies on fruits and vegetables. 
Ent. 961 1 and 2 
Control of Insects Attacking the West Indian Che 
Malpighia Punicifolia L.) in Puerto Rico. To 
pighie eee of insecticides in control of 
insects of foliage and fruit of West Indian cherry; 
(2) make life-history studies of most important insect pests; 
and (3) find out best spraying program for insect control. 
Ente, Agrone, Hort. 71 
I. NUT INSECTS 
ausectterde Tests for the Control of the Hicko 
gs for the control of the hickory 
shuckworm wae Miseiesipo! conditions. 
Ent. HH-11 
