. Bulletin of the Department of Agriculture. Agriculture; Agriculture. aggimg UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 416 Contribution from the Bareau 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 Page Zonal Distribation in the Southeast . 2 Classification and Synonymy 3 Food Plants 4 Life-History Summary • 5 Description and Habits 6 Nature and Extent of Damage to Cotton in the South 20 Generations of the Red Spider .... 21 Seasonal History 23
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. aggimg UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 416 Contribution from the Bareau 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 Page Zonal Distribation in the Southeast . 2 Classification and Synonymy 3 Food Plants 4 Life-History Summary • 5 Description and Habits 6 Nature and Extent of Damage to Cotton in the South 20 Generations of the Red Spider .... 21 Seasonal History 23 Dispersion 27 Climatic Control 33 Insect Enemies of the Red Spider ... 34 Apical Swarming 58 Remedial Measures 69 Summary and Recommendations ... 67 Bibliography 69. WASHINGTON GOVERNMENT PRINTING OFFICE 1917. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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