166 



the chances decrease drastically to approximately four in 1,000 at peak 

 squa>-ing. Based on these assumptions and calculations, the results as shown 

 in tables 10-12 emphasize that in-field traps should be considered as one of 

 the measures to be used in detection, management, suppression, and elimination 

 of the boll weevil in any future programs. 



319, ; Cleveland, T. C; Davis, J. W. ; and Cross, W. H. 1970. Attraction 

 of boll weevils to cotton plants and to males fed on three diets. J. 

 Econ. Entomol. 63: 990-991. 



Previous investigations in the laboratory and in the field showed that male 

 boll weevils, Anthonomus grandis Boheman, fed on cotton squares (flower buds) 

 were more attractive than males fed on pellets of artificial medium, regard- 

 less of the strain of boll weevils. Presumably, this greater attraction 

 occurred because the cotton squares contain a higher concentration of the 

 materials necessary for the production of the pheromone by males. However, 

 previous field tests of the male pheromone have been restricted to a com- 

 parison of the attraction of males held in screened boxes and fed pellets 

 of medium or squares removed from growing cotton plants. Therefore, the 

 presently reported tests were made in 1968 to compare the attraction of 

 native boll weevils to laboratory-reared males (fed pellets of medium, fresh 

 squares, or squaring cotton plants) with the attraction to squaring cotton 

 alone in each of 3 areas: State College, Miss.; Tallulah, La.; and Waco Tex. 



320. , and Cross, W. H. 1968. Trapping female boll weevils in a large 

 cage at Iguala, Mexico, using male sex attractant. Folia Entomol. Mex. 

 18-19: 27. (In Spanish). 



Laboratory-reared female boll weevils ( Anthonomus grandis Boheman) were re- 

 leased at the Campo Experimental of the Institute Nacional de Investigaciones 

 Igricolas, Iguala, Mexico, in a 1/2-acre field cage divided into 8, 1/16-acre 



