99 



The captures of females indicated a preference for live m-'les over extracts of 

 males of 1.8:1 when the comparisons were made on different days and of 6.2:1 

 when they were made on the same day. ' '." ■ ■. 



183. ; Leggett, J. E.; and Hardee, D. D. 1971. Improved traps for capturing 



boll weevils. Coop. Fcon. Insect Rep. 21: 367-368. 

 Large numbers of male or pheromone-baited traps for capturing of boll weevils 

 (Anthonomus grandis Boheman) have been employed for the past several years in 

 survey and control programs of the Entomology Research and Plant Protection 

 Divisions, ARS, USDA, and other agencies. Results of a series of tests con- 

 ducted at the Boll Weevil Research Laboratory determined colors most attractive 

 to the boll weevil, as well as more efficient and economical trap designs. 

 From 1966 through 1968, a Stikem!® (Michel and Pelton Co.) coated plywood 

 wing trap painted John Deere Green (Mobile Paints B.L.P. Rus-Kil) , and an 

 oblique funnel live trap were used in a variety of circumstances and deter- 

 mined to be the best designi^ for capturing boll weevils (1970) . Results of 

 tests in 1968 indicated that white or bright yellow traps were more attrac- 

 tive to boll weevils than the darker green traps. Boll weevils as well as 

 many other insects are greatly attracted by the intensively reflective 

 daylight fluorescent pigments with peak emission in the 525 my region 

 of the spectrum. Tests conducted late in 1970 with traps of several 

 shapes made from plastic-impregnated paper half-gallon cartons resulted 

 in the development of a disposable and more economical trap. A trap of 

 a foldout design, 19 cm wide x 25.5 cm high, was constructed by trimming 

 unformed cartons and stapling 2 inside out and back to back to form 4 

 wings. Saturn Yellow paint mixed 3:1 with turpentine was rolled on the 

 inner white surface of the cartons before stapling. Stikem® or Tack-Trap® 



(Animal Repellents, Inc.) under pressure was applied to the wings with a 



>- 

 flange nozzle tip 8 cm wide. 



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