-"^ 



412 



806. ; White, J. R.; and Pruitt, G. R. 1978. A wild feeding host of the 

 boll weevil in west Texas. Southwest. Entomol. 3: 171-175. 



Overwintered boll weevils were collected from flowering yellow woolywhite, 

 Hymenopappus f lavescens Gray, during May and June in Stonewall County, Texas. 

 Examination of the gut contents of the weevils confirmed that they were feed- 

 ing on the pollen of H. flavescens . The extent to which this species is 

 utilized for food and its importance in the spring ecology of the boll weevil 

 is unknown. We hypothesize, however, that in the absence of fruiting cotton 

 some overwintered boll weevils may significantly extend their life span by 

 utilizing the pollen of yellow woolywhite as an energy source. 



807. ; White, J. R.; and Wade, L. J. 1975. Late-seaspn immigration of 

 boll weevils into an isolated cotton plot. J. Econ. Entomol. 68: 616- 

 618. 



A small plot of cotton and pheromone traps were used to measure late season im- 

 migration of Anthonomus grand is Boheman during 1974. The test location was 

 Isolated by ca. 3 milet, from commercial cotton fields. Immigratory weevil move- 

 ment into the plot began Aug. 5 and continued until Nov. 11. Weevils entered 

 the plot in numbers ranging from an estimated 500 to 10,000/acre/wk. Immigra- 

 tory weevils captured on traps and those entering the plot prior to mid-October 

 were primarily reproductive insects. Peak immigration of diapausing weevils 

 occurred after Oct. 24. Pheromone trap and cotton plot records indicated the 

 same pattern of weevil movement except for the 1st 3 wk of innnigratory 

 weevil activity during the 1st 3 wk of August while weevils were entering 

 the cotton plot in numbers estimated at 1000-3000/acre/wk. 



