into that State, would have no effect in controlling it, and the weevil would become 

 a serious pest there. 

 1917 - Morrill, A. W. Cotton pests in the arid and semi-arid Southwest. J. Econ. Ent. 

 10(3):307-317. 



The more destructive insect enemies of cotton in the Southwestern States, with 

 special reference to their geographical distribution. The species dealt with include 

 the Mexican cotton boll weevil. 



A comparison is made between conditions in the arid Southwest, where 23 in- 

 jurious species are recorded, and the States east of the 98th meridian, where 42 

 insect pests of cotton are found. 



A bibliography of 2 3 works is given. 



1917 - Utra, G. Enfermedales del algodonero (Diseases of cotton). Bogota Agr. Rev. 



3(10):592-596. Oct. 



This is part of a popular article on 4 insect pests of cotton in Brazil: 

 Alabama argillacea (Hbn), Heliothis obsoleta ( armigera ), Pectinophora (Gelechia) 

 gossypiella, and Anthonomus grandis. 



1918 - Worsham, E. L. Twentieth annual report of the State Entomologist for 1917. 



Ga. State Bd. Ent. B. 51, 44 p., 3 fig. Jan. Atlanta. 



Damage to cotton byjV. grandis has on the whole been considerably less than 

 in 1916. Research work on this pest included studies on hibernation, longevity, 

 foodplants, general biology and control. Dusting with arsenate of lead and sulphur 

 was tried, but results were inconclusive. 



1919 - Ball, E. D. Economic entomology: Its foundation and future. J. Econ. Ent. 



12(1):34, 52-53. 



"The cotton-boll weevil depends entirely upon the cotton plant for existence, 

 and if the Americans would store cotton in advance and cease to grow the crop for 

 a single year, its eradication might be accomplished." 



(A correction was made in the statement that the cotton boll weevil has only 

 one foodplant. A native wildplant found in the mountains from Guatemala to 

 Arizona serves as a host, while some of the native plants of the South also serve 

 to a limited extent as foodplants. It is possible, therefore, that this pest might 

 survive in spite of a suspension of cotton growing.) 



1919 - Caffrey, D. J. The European corn borer problem. J. Econ. Ent. 12(1):101. 

 "In the course of the discussion following this paper, the boll weevil is 

 quoted as an instance where control measures had been delayed too long with 

 disastrous results." 



1919 - Morrill, A. W. Report of the Entomologist. Ariz. Comm. Agr. and Hort. 

 10th Ann. Rpt., 1917-1918:29-73, 1 3 fig., 2 pis., 7 tab. Phoenix. 



The area under cotton cultivation in Arizona during 1917 was greatly in- 

 creased, and accordingly pest control became more important. At the present 

 time the alfalfa weevil, the pink bollworm, and the cotton boll weevil are the 

 greatest insect menaces. 



The cotton boll weevil did not cause excessive damage. 



1921 - Morrill, A. W. Cotton boll weevils. J. Econ. Ent. 14(4):373- 374. 



A series of cotton boll weevils on the West Coast of Mexico included 

 Anthonomus grandis and A. grandis thurberiae, as well as numerous hybrids 

 between them and races of them. Bolls are apparently preferred to squares for 

 oviposition. 



1921 - Watson, J. R. Notes on some Florida weevils. Fla. Ent. 4(3):33-35. Jan. 

 Gainesville. 



"Recently collected in Florida, Epicaerus formidulosus Boh., which is 

 commonly found on cotton, where it is frequently mistaken for the boll weevil 

 (A. grandis)." 



185 



