295 



32 

 be of short duration, so P was used Instead. Also, the weevil-, were 



individually marked. 



566. ; Cross, W. H.; and Mitchell, H. C. 1974. Eupelmus cyaniceps 

 (Hymenoptera: Eupelimidae) , a hyperparasite. J. Ga. Entomol. Soc. 

 9: 68-69. 



Eupelmus cyaniceps , previously believed to be a primary parasite of the 

 boll weevil, was found instead to be a hyperparasite of Bracon mellitor . 



567. ; Hardee, D. D.; and Davich, T. B. 1969. Chemosterilants applied as 

 sprays against populations of boll weevils in cotton in field cages. 

 J. Econ. Entomol. 62: 1144-1147. 



In the first large-scale tests with sprays of chemosterilants against any 

 insect pest, apholate applied to the cotton in 2 1/2-acre screened cages at 

 rates of 1, 2, or 4 pounds per acre for control of Anthonomus grandis Boheman 

 suppressed populations compared with an untreated check whether the initial 

 infestations were begun with virgin or mated pairs. Hempa, at a rate of 2 lb 

 per acre, was ineffective. At 4 lb per acre, apholate reduced production of 

 squares compared with an untreated check, but the toxicity of this compound 

 was too great for general use. Since the technique proved effective, other 

 less hazardous chemosterilants are being sought. 



568. ; Leggett, J. E.; Johnson, W. L.; and Cross, W. H. 1973. Technique 

 for separating boll weevils and other insects from samples taken with 

 an insect collecting machine. J. Econ. Entomol. 66: 1332. 



Studies of the dispersal of the boll weevil, Anthonomus g randis Boheman, re- 

 quire capture, marking, and release of large numbers. Reported here are 2 

 techniques for recovering boll weevils from field samples obtained by insect- 

 collecting machines. These machines are the result of several modificiations 

 and improvements of. the Nisbet bug catcher and modified high-clearance sprayers. 



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