314 Vineyard Culture. 



but I do not know that it has been found to damage the vine. 

 The larva is the common white grub, and as it remains a 

 long while in the ground in this form, and is quite a voracious 

 feeder, it is often very destructive ; though I am not aware of 

 its ever having been detected eating the roots of the grape- 

 vine, its appetite for similar vegetation renders it an unwel- 

 come visitant. The remedies and the natural enemies are 

 similar to those given by the author. 



Pelidnota punctata, is the name of a much larger beetle, 

 which feeds upon the grape-leaves in midsummer, and con- 

 sumes considerable quantities of the foliage. I have not 

 learned its history in the larval condition, but suppose the 

 grub may also prefer to feed upon the vine, and if so, it will 

 destroy the roots. 



The perfect insect is to be found in the day-time, among 

 the leaves, where it may easily be caught, and should be 

 destroyed. It may be known by its large size ; the wing-covers 

 are shining, of a dull yellow, marked by three black dots on 

 the outer side of each, and one on each side of the thorax. 



The Rose-Beetle {Macrodactylus subspinosa) is often very in- 

 jurious to the grape-vine, sometimes destroying the crop by 

 cutting off the bunches, as well as eating the foliage in May 

 and June. 



In its perfect state, this insect is exceedingly voracious to 

 many of our cultivated plants. Though each individual be 

 quite small — about half an inch long — their immense numbers 

 cause serious destruction of vegetation, and they continue to 

 feed for about a month. The rose-beetle is .33 of an inch 

 long, is of a dull, rather pale buff yellow. The claws are large 

 and black. Their eggs are deposited in the ground, where 

 they hatch in about twenty days, and the grubs feed upon 

 roots, until fall, when they descend into the ground to hyber- 

 nate, and emerge the next season as beetles. 



The Rose-Chaffer has many natural enemies among preda- 



