\ 



264 



503. , and Cross, W. H. 1978. Boll weevils: the relative importance of 

 • color and pheromone in orientation and attraction to traps. Environ. 



Entomol. 7: 4-6. 

 Saturn Yellow was important in orienting and attracting boll weevils, Anthonomus 

 grand is Boheman, to baited and unbaited traps at a distance of 2 m or less; 

 moderately important at distances up to 6 or 7 m; and not important at 

 greater distances. When boll weevils were given a choice between 2 colors 

 of traps in the same circle, the average number of responding marked females 

 was the same (28%) regardless of whether the red traps were baited and the 

 yellow traps unbaited or whether grandlure was in all traps. However, un- 

 treated (no pheromone) Saturn Yellow traps spaced 8 m apart caught only 4.4% 

 of released female boll weevils. 



504. ; Cross, W. H.; Mitchell, H. C; Johnson, W. L.; and McGovern, W. L. 

 1975. Improved traps for capturing boll weevils. J. Ga. Entomol. Soc . 

 10: 52-61. 



Iflien trap designs were tested to determine the most efficient type to use with 

 grandlure in capturing Anthonomus grandis Boheman, the conical, non-sticky 

 Leggett trap was more efficient than a similar trap coated with adhesive. 

 The size of the trap (17 or 29.5 cm high) was a minor factor in number of 

 weevils^captured. The location of grandlure on the Leggett traps was not a 

 factor in the capture. Glass beads on the surface of live traps made them 

 less attractive. Bicolored traps were less effective than traps painted all 

 Saturn Yellow (Day-Glo®) . However, daylight fluorescent pigments mixed with 

 tack trap placed on paper wing traps were as effective as those traps painted 

 with Saturn Yellow and then coafied with tack trap. Caution Yellow and Lightning 

 Yellow (at least in early season) were as attractive as Saturn Yellow to boll 

 weevils. 



