.. . -^-.^■ . ■-^---- -riT:r?>^<yy«^'?ev^^';^?gyf,^' ■ ^^.^ -;'■ . ,_ ■ ■ -^ .^ "-■■ ' ■^•:^^i "^j^^^^ityf ■«>•"»- ■r^-^'-' 



132 



245. . 1968. The thurberia weevil in Arizona. J. Econ. Entomol. 61: 

 1264-1268. 



Overwintering Anthonomus grandis thurberiac Pierce were released from the 

 bolls of wild cotton by sumrsr rainfall totaling 4-7 inches. Emergence 

 is poorly timed with the fruiting of the native host, Gossypium thurberi 

 Todaro, and the emerged weevils are forced to feed on the developing foliage 

 for an extended period. An early generation develops in thurberia squares. 

 Factors affecting mortality of the weevil populations include the physiological 

 conditions of the thurberia plant, grazing of cattle, destruction by ground 

 squirrels, predators, and parasites. 



246. . 1969. Longevity and fecundity of the boll weevil complex in 

 Arizona. J. Econ. Entomol. 62: 1408-1412. 



Adult boll weevils, Anthonomus grandis Boheman, collected from cultivated 

 cotton in Arizona lived an average of 6 months in the laboratory, and a few 

 lived as long as 11 months; in the field this longevity was abbreviated. 

 Thurberia weevils, A. grandis thurberiae Pierce, were longer lived than 

 weevils from cultivated cotton, and overwintering thurberia weevils lived 

 longer than the 1st square-reared generation. The fecundity of Arizona 

 boll weevils was highly variable, and the potential was drastically reduced 

 in the field. The ovipositional pattern of weevils from cultivated cotton 

 was relatively consistent and apparently was closely associated with longe- 

 vity. 



247. . 1972. Preliminary investigation of vertical distributions of 

 fruiting forms and insects on cotton plants. J. Econ. Entomol. 65: 

 1410-1414. 



Many populations of fruiting forms and cotton insects found In the upper 

 two or three 6-inch increments of cotton plants are correlated with popu- 



/ 



