ENTOMOLOGY 6? 



As would appear from the life history of the insect, most effec- 

 tive work may be done by destroying the first brood larvae, which 

 feed in the clusters of blossoms and berries. The first treatment 

 should be made just before the blossoms are ready to open, and the 

 second just after the blossoms have fallen. A third treatment in a 

 week or ten days is also advisable in badly infested vineyards. In 

 all these treatments special care should be exercised to force the spray 

 well through the clusters of blossoms and young fruit. It will be 

 noted that the second and third treatments for the grape berry moth 

 will coincide with the first and second treatments for the grape root- 

 worm, and the arsenicals recommended for that insect will be equally 

 satisfactory for the grape berry moth. 



This practice is often followed by vineyardists, and is especially 

 directed against larvae of the second brood. The infested spotted 

 green berries, which are readily seen, should be carefully searched for 

 and destroyed. This practice will lessen injury from a possible later 

 brood, and if carefully followed would reduce the insects materially 

 in the vineyard from year to year. 



Inclosing each cluster of grapes in a paper bag soon after the 

 blossoms have fallen should protect them from injury from second 

 and third-brood larvae, and would also afford protection from the 

 rose-chafer and from black-rot. This practice is especially useful in 

 the small home vineyard. 



The fact that the insect passes the winter in fallen leaves has led 

 to the recommendation that these be raked up and burned. From 

 Mr. Johnson's observations it would appear important to collect these 

 early in the fall, as the pupae are to be found mostly on the 10 or 15 



Eer cent of leaves which fall first, and great care must be taken to col- 

 ;ct those leaves more or less imbedded in the soil. After remaining 

 on the ground for a while, probably many of the cocoons break off 

 from the leaves and would thus not be collected with the leaves. It is 

 probable also that many of the insects could be destroyed by covering 

 the leaves with soil early in the fall. 



Grape Curculio. The grape curculio is one of the snout beetles 

 belonging in the same family as the so-called plum curculio. The 

 parent beetle deposits her eggs in little cavities which she eats into 

 the grapes, and the resulting larvae feed upon the pulp and seeds, 

 producing an injury quite similar to that done by the grape berry 

 moth. The beetles cut small, rather characteristic holes in the 

 grape leaves when feeding, and the berries often show a purplish col- 

 oration at the point punctured in egg-laying. If infested berries be 

 examined it will be readily possible to distinguish between the grape 

 curculio and the grape berry moth, since the grubs of the former are 

 whitish and quite destitute of legs, whereas the larva? of the berry 

 moth have well-developed legs, are greenish in color, quite agile, and 

 likely to escape quickly upon being disturbed. 



The grape curculio is a native species, feeding originally on the 

 wild grape, as it does at the present time. Mr. Brooks has shown that 

 the insect is readily controlled with arsenical poisons and, as will be 



