CONTENTS 



Page. 



Introduction •"» 



History 5 



Nature and extent of injury 



Origin and distribution 7 



Description 8 



The adult 8 



The egg !> 



The larva SI 



The young nymph or prepupa 10 



The full-grown nymph or pupa b> 



Habits 10 



Feeding 10 



Jumping 1 1 



Flight 11 



Food plants l 1 1 



Life history U 



Methods of study 11 



Life cycle . 111 



Hibernation 111 



Other thrips that may be mistaken for the tobacco tbrips 12 



Natural control 13 



Rains 13 



Insects 14 



Remedies 14 



Cultural methods 14 



Insecticides 17 



The best treatment !_ p.) 



% How to make kerosene emulsion p.) 



When to apply the emulsion 19 



How to use the emulsion 20 



Cost of spraying 20 



Supplies and labor H<) 



Apparatus . 21 



Summary of recommendations -1 



Caution ! l!l 



Addenda -. 



The tobacco thrips in lPO.VG 22 



Effect of the spray 22 



Index __ 23 



