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111 



the number of oviposition-punctured squares compared with the number In the 

 other 2 zones. Also the percentage of infertile eggs, the numbers of live 

 jjmnature and adult weevils per acre in fruit, the numbers of adults on plants 

 and in hibernation sites, the numbers of overwintered adults, and the levels 

 of infestation during the 2nd year or season after the releases were terminated 

 were considerably lower in the release zone than in the zone treated intensively 

 with insecticides. 



206. Davis, J. W. ; Cowan, C. B., Jr.; and Parencla, C. R., Jr. 1967. Emergence 

 of overwintered boll weevils from hibernation sites near Waco, Texas. 



J. Econ. Entmomol. 60: 1102-1104. 

 A high percentage of overwintered boll weevils, Anthonomus grand is Boheman, 

 held in hibernation cages emerged by the middle of June each year (1940-58) 

 in the Waco area of Central Texas. Also, a high percentage of overwintered 

 weevils collected on flight screens or observed in cottonfields (1959-1966) 

 had left their hibernation sites to enter cottonfields by mid-June. 



207. ; Cowan, C. B. , Jr.; and Parencla, C. R., Jr. 1975. Boll weevil: 



survival in hibernation cages and in surface woods trash in central 



'ft. 



Texas. J. Econ. Entomol. 68: 797-799. 



^ 



Survival of Anthonomus grandis Boheman in surface woods trash at Waco, Texas, 



from 1960-73 ranged from 14.4% in 1968 do 100% in 1965. Those surviving in 



field cages from 1940-58 ranged from 0.02% in 1951 to 21.32% in 1941. The 



data concerning survival and time of emergence from hibernation sites in the 



spring are needed in planning boll weevil suppression or elimination programs 



for the Texas Blacklands. 



