SUMMARY OF INSECT CONDITIONS DURING 1021. 43 



however, is V square miles in North Carolina. The gain in 

 Texas was oyer 10.000 square miles which practically extend- the 

 line to that of 1915. the territory lost by the weevil since that year 

 being thus regained. 



In Oklahoma almost the entire cotton area is infested, while prac- 

 tically the same condition prevails in Arkansas. 



In Tennessee several new counties were invaded in the western 

 portion along the Mississippi River Valley. 



The entire areas of cotton production in Georgia and South Car- 

 olina are totally infested. Altogether 66.662 square miles of new 

 territory were invaded by the weevil in 1921. and there was 

 of territory at any point. This makes a total of 600.771 square miles 

 infested in the United States, leaving only about square mile.- 



of cotton territory still uninfested. 



The accompanying map (Fig. 23) shows the increase in infested 

 territory by 10-year periods since 1892. More detailed information 

 on this subject may be obtained from Department Circular 210, 

 United States Department of Agriculture. 



PINK BOLLWORM. 

 (Peetinoplwra gossypieilu Samid.) 9 



Prior to the discovery of this pest in Ellis County in the fall of 

 1921. there were five areas or districts of infestation known in Texas, 

 namely, those of Hearne, Trinity Bay, Pecos Valley. Great Bend, 

 and El Paso : a district in the southwestern part of Louisiana cover- 

 ing Calcasieu. Jeff Davis, and Cameron Parishes; a region contin- 

 uous with the El Paso region in Dona Ana County. X. Mex,, and 

 a region closely related to the Pecos Valley district at Carlsbad in 

 Eddy County. X. Mex. 



Of the older areas of infestation the Hearne area has been appar- 

 ently freed from the pest and is a demonstration of what can be 

 accomplished where adequate control is maintained for a period of 

 years. The Trinity Bay region has been reduced to a single locality 

 at Moss Bluff in the southern part of Liberty County, and the in- 

 festations at Shreveport and in south v Louisiana have ap- 

 parently been eliminated. 



The entire success achieved by the establishment of noncotton 

 zones in the three parishes of southwestern Louisiana, as shown by 

 the elimination of cultivated cotton and the complete nonrecurrence 

 of the pink bollworm in volunteer or other chance cotton in the dis- 

 trict during the two years the noncotton zones have been maintained. 



: ' Extracted from summary prepared under the direction of Dr. W. D. Hunter, Bureau 

 of Entomology, Nov. 26, 1921. 



