CONTENTS 
Page 
Headlines for the year - 1 
Insects affecting man 2 
House flies develop resistance to DDT 2 
Aerial applications of DDT kill mosquitoes and black flies 3 
New chlorinated hydrocarbons as effective as DDT against flies and 
mosquitoes 3 
Fabrics protected against damage by insects 3 
Insects affecting livestock 4 
Toxicology of insecticides when applied to livestock 4 
Safer insecticides replace DDT for use on dairy farms 4 
Effect of insecticides on livestock studied 5 
Storage of insecticides in fatty tissues of cattle — 5 
New insecticides tested against livestock pests 6 
Forest insects 7 
Outbreaks of pine bark beetles in western forests being controlled 7 
Bark beetles controlled through sanitation-salvage cuttings 7 
Mountain home owners of southern California combat bark beetles. 8 
Ips infestations affected by climate 8 
Aerial spraying controls spruce budworms 9 
Resistant strains of pines may solve weevil problem in California 9 
Engelmann spruce beetle still active in Colorado 10 
Research on insects affecting forest products shows progress 10 
New program of forest-pest surveys organized 11 
Gypsy moths 11 
Cooperative programs expedite control 11 
Cape Cod initiates its own spray program 12 
Collection of attractant for survey traps increased 12 
Active constituent of gypsy moth attractant studied 13 
Preventing spread of gypsy moths through regulatory activities. _ 13 
Truck-crop and garden insects 14 
Organic phosphorus compounds outstanding against greenhouse pests. 14 
Parathion effective against green peach aphid on tobacco 15 
Effect of insecticides on the yield and quality of tobacco tested 15 
New f umigant for cigarette beetle in stored tobacco 16 
Control of aphids oii potatoes improved 16 
DDT gives best residual action on pea aphid 16 
New insecticides effective against aphids on cole crops 16 
Cost of controlling cabbage caterpillars reduced 17 
Insecticides kill melonworms and pickleworms on cucumbers 17 
Remedy sought for serpentine leaf miner 17 
Soil insecticides for wire worms evaluated 17 
Onion thrips controlled with several new insecticides 18 
New insecticides kill insects affecting sugar-beet seed 18 
Sweetpotatoes protected from weevil damage 18 
Nematodes infesting potatoes 19 
Golden nematode not found outside of Long Island 19 
Potato rot nematode limited to small area in Idaho 20 
Fruit and nut insects 21 
Phony peach vectors incriminated 21 
Tests of new insecticides against fruit and nut insects continued 21 
Apple insects 21 
Pear psylla 22 
Insect pests of stone fruits 23 
Pecan insects 24 
Citrus pests 24 
Pineapple mealybug 25 
Grape insects 25 
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