ENTOMOLOGY. 681 



The grape-berry moth, M. V. Slingekland (Neiv York Cornell Sta. Bui. 223, pp. 

 41-t'iO, figs. 15). — In this country the grape-seed insect, grape curculio, and grape- 

 berry moth may occur in grapes causing them to be wormy. The grape-berry moth, 

 however, is usually the insect concerned in such damage. Its presence may be recog- 

 nized by a purplish spot on the half-grown green berries. 



According to the author's investigations this is not the European pest Eudemis 

 botrana, but should be referred to Polychrosis viteana. The author has never observed 

 this insect eating anything but grape blossoms, recently set fruit, the stem of grape 

 clusters, and the green and ripening grapes of both wild and cultivated species. 

 Apparently no varieties are exempt from attack, but in the Chautauqua district Con- 

 cords are most seriously affected. Some of the moths of the first brood appear about 

 June 1. The first hrood of caterpillars do not live inside of the blossoms or berries, 

 but feed upon the outside. The most destructive work of this pest is done by the 

 second brood of caterpillars, which work in the green grapes in July and August. A 

 partial third brood appears in the fall. 



A considerable number of insect parasites are known to prey upon these pests, and 

 notes are given on these species. In combating the grape-berry moth fallen leaves 

 should be destroyed, and the soil should be cultivated in the fall to destroy the 

 hibernating pupa?. The practice of putting paper bags around the clusters of grapes 

 protects them from the grape-berry moth and from other insects and fungus diseases. 

 Infested berries may be picked in August, and wormy berries discovered at the fall 

 picking should be destroyed. It may be well to prevent the growth of sumac and 

 other underbrush in the neighborhood of vineyards. 



The grape-berry moth may be completely controlled by spraying with arsenate of 

 lead at the rate of 10 or 12 lbs. per 100 gal. of water. The first application should be 

 made just before the blossoms open, and the second after the petals fall, while the 

 third application may be given when the grapes are about the size of small peas. 

 Comparative notes are given on the American and European grape-berry moths and 

 on species of American moths that have been mistaken for the grape-berry moth. 

 A brief note is also given on a leaf roller (Eulia triferana) that sometimes works in 

 conjunction with the grape-berry moth. 



Two grape pests, M. V. Slingerland and F. Johnson (Neiv York Cornell Sta. 

 Bui. 224, />/>. 61-74, figs. •'')• — The grape root-worm apparently caused less damage 

 during the past season than in 1903. Since the adult beetle feeds upon the foliage 

 to a considerable extent, spraying experiments were carried on in 1903 which gave 

 encouraging results. 



In 1904 such experiments were repeated and it was found that by applying arse- 

 nate of lead in water or Bordeaux mixture at 2 periods (about June 25 and July 11) 

 the greater part of the damage from this beetle could be avoided. On 15 grape- 

 vines sprayed in this manner, 11 egg clusters were found, while 151 egg clusters were 

 found on 15 similar vines untreated. The spraying can be performed for about $3 

 per acre for each application. The authors consider it to be demonstrated that the 

 grape root-worm may be effectively controlled by arsenical sprays and more cheaply 

 than any other method. The beetles are not all killed by this method, however. 

 The continued use of various devices for catching beetles by jarring from the vines 

 has not given encouraging results, the vines being too much injured by this method. 



In the study of the cause of the failure to set fruit in certain grape clusters, a grape 

 blossom-bud gnat was found which occurred to the number of 18 in a single bud. 

 The identity of this pest has not been established and the habits and life history 

 have not been worked out. Since the pest occurs most abundantly in neglected 

 vineyards, or near wood lots or hedges, thorough cultivation and clean farming are 

 recommended for controlling it. 



Brown-tail moth and other orchard moths, Edith M. Patch (Maine Sta. Bui. 

 108, pp. 153- 16S, pis. 3). — Attention is called to the fact that deserted or neglected 



