|| UNITED STATES DEPARTMENT OF AGRICULTURE 
Hy BULLETIN No. 416 
Contribution from the Bureau of Entomology 
L. O. HOWARD, Chief 
| - Washington, D. C. PROFESSIONAL PAPER January 29,1917 | § 
THE RED SPIDER ON COTTON 
By 
E. A. McGREGOR and F. L. MCDONOUGH 
Scientific Assistants — 
CONTENTS 
Mei Page 
Zonal Distribution in the Southeast . . 2 | Seasonal History .......4.-. 23 
Classification and Synonymy .... . ial DISPERSION serie ie betieercen oleae ts Wo eat 
Swood Plants . . . « +s ee oe ee 4 | Climatic Control. . . ....... 33 
Life-HistorySummary .... . -  §& | Insect Enemies ofthe Red Spider ... 34 
Description and Habits .... - - 6 | ApicalSwarming ......6«¢8e 58 
Nature and Extent of Damage to Cotton Remedial Measures ....... 59 
intheSouth ...... . - - - 20 | Summaryand Recommendations ... 67 
Bibliography ....-+ es 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1917 
