EXPERIMENT STATION BULLETINS. 



325 



before the fruit gets started, put on another spray or two, diluting to one pound 

 of the poison to one hundred and seventy-five gallons of water. 



Clean culture. — As the beetles winter in rubbish, etc., rake up the rubbish very 

 early in the spring and burn or bury. 



The beetles also feed on elm and several other plants. 



The Spotted Pelidnota. (Pelidnota punctata.) 



Conspicuous among the enemies of the grape, is a large brownish-yellow 

 beetle with three black dots on each wing-cover. Heavily, and with a droning 

 flight, this large beetle wanders about among the vines with no attempt at con- 



Fig. 47. — Grape Pelidnota, after Riley, American Entomologist. 



cealment, feeding on the foliage. Usually, however, their numbers are small and 

 little harm is done in proportion to the threatened damage. The larval and pupal 

 stages are passed in rotting wood, the larvae somewhat resembling those of the 

 June-beetle. When very numerous, they may be controlled by hand-picking, the 

 damage being confined to that inflicted by the adult beetle. 



Climbing Cut-worms (see Insects affecting the peach). 

 Phylloxera (see Insects affecting the roots of grape). 

 Grape Root-worm (see Insects affecting the roots of grape). 



AFFECTING THE FRUIT. 



The Grape Berry-moth. {Eudemis 'botrana.) 



A small moth, spreading a little less than one-half inch, that works on the 

 ripening fruit. It has not been reported as injurious from Michigan as yet, 

 though it is sure to be sooner or later. The larva bores through the green 

 grape, often fastening several shriveled and blackened grapes together. The early 

 broods are said to work on the foliage and young fruit, and the pupal condition 

 is said to be passed in a fold cut in the leaf. 



REMEDIES. 



Collect all injured and fallen fruit and destroy. Destroy also all fallen leaves 

 in the autumn. In cases where it is feasible, bag the clusters. Of course this 

 will pay only in case of very choice and high-priced varieties. 



