16 BULLETIN 730, U. S. DEPARTMENT OP AGRICULTURE. 



applied in the spring soon after the blossoms have dropped and 

 another three or four weeks later,. This is the season when other 

 grape insect pests and fungous diseases are to be dealt with and the 

 sprays can be prepared and applied for combined results. As has 

 been pointed out, the beetles are feeding on the foliage for 10 days or 

 more before oviposition begins and practically all may be killed by 

 spraying before any injury is done to the fruit. 



BAGGING. 



Inclosing the clusters of fruit when about one-fourth grown in 

 1 -pound or 2-pound paper bags affords complete protection against 

 the curculio. The ordinary paper bags kept by grocers are sufficient 

 for this purpose. The bags should be slipped over the clusters and 

 the mouth pimied or otherwise fastened securely around the stem. 

 The bags usually remain intact until the fruit is ready for gathering, 

 and the grapes within ripen perfectly. This method of protecting 

 the fruit, however, is much slower and more expensive than is spray- 

 ing, and for protecting the fruit from the curculio the results are very 

 little, if any, better than would be obtained by spraying. 



OTHER METHODS OF CONTROL. 



Cultivation of the soil under infested grapevines destroys the 

 curculios to some extent by breaking up the cocoons and exposing 

 the pupse, or by burying the cocoons so deeply in the soil that the 

 beetles on emerging from the cocoons are unable to work their way 

 to the surface. 



A measure of benefit also may be obtained by gathering and 

 destroying the punctured fruit and by collecting the beetles by 

 jarring them from the vines in the early morning or on cloudy days 

 upon sheets spread on the ground beneath the vines. 



BIBLIOGRAPHY. 



(1) Say, Thomas. 



1831. Descriptions of North American curculionides . . . July, 1831. In 

 his Complete writings of Thomas Say on the Entomology of North America, 

 ed. by'John LeConte, v. 1, p. 259-299. New York, 1859. 



Page 286: Ceutorhynchus inacqualis. Original description of beetle from specimens col- 

 lected in Indiana. 



(2) Warder, Dr. 



1855. [Brief mention of a "species of curculio " that works on the grape.] 

 In Illinois State Agr. Soc. Trans., v. 1, 1853-54, p. 340. Springfield, 1855. 

 First mention of the insect as an enemy of the grape. 



(3) Rathvon, S. S. 



1858. More grape worms. In Practical Farmer, December. 

 Brief mention of Coeliodcs [= Craponius] inacqualis. 



(4) Walsh, B. D. 



1867. Grape curculio Ccleodes curtis Say. In Prairie Farmer, new ser. v. 

 20, no. 23, p. 359. 

 Brief description 



