UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 351 



Contribution from the Bureau of Entomology 

 L. O. HOWARD, Chief 



Washington, D. C. 



PROFESSIONAL PAPER 



April 22, 1916 



THE TERRAPIN SCALE: 



AN IMPORTANT INSECT ENEMY OF 



PEACH ORCHARDS 



By 



F. L. SIMANTON, Entomological Assistant, Deciduous Fruit 

 Insect Investigations 



CONTENTS 



Introduction o ... o ..... . 1 



History 2 



Distribution ........... 2 



Economic Importance . 3 



Injury ............. 3 



Food Plants 4 



Life History . 4 



Seasonal History ......... 61 



Mortality ...... ...b. . 61 



Page 



Attendants . o ....... ° . . 62 



Predaceous Enemies ........ 63 



Parasites . .......... . 65 



Sooty Molds 66 



Remedial Measures ........ 67 



Summary 86 



Recommendations for Control . . . o 89 



Bibliography ......<> o .o <> 90 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1916 



