THE APHIS OR LEAF LOUSE 



469 



nightfall on beds of verbenas, or other garden flowers. These worms 

 are related to the other large caterpillars which feed on tobacco, 

 tomatoes, etc. 



Leaf Eating Beetles. There are many beetles, large and sm^ll, 

 which infest grape leaves. They can all be reduced by the use of 

 arsenate of lead or Paris green, or those which drop to the ground 

 when disturbed may be collected in large numbers on sheets spread 

 below. 



The most notable of these because of its evil work in the central 

 part of the State, and because the grub destroys the roots of the vine 

 causing it to be called the "grape root worm," and the beetle riddles 

 the leaves and young fruit. It is Adoxus vitis and a special study of 

 it has been made by Professor H. J. Quayle, of the University Experi- 

 ment Station, the results of which are published in Bulletin 195 of 

 the station and remedies suggested. The beetle is about one-fifth of 

 an inch in length and is black or brown. 



INSECTS UPON BARK OR SURFACE OF LEAVES 

 OF FRUIT 



Leaf Lice. Leaves of fruit trees, especially the apple and plum, 

 are sometimes almost covered with lice or aphides of different colors, 

 from light green to black, some individuals having wings and some 

 wingless. Available remedies for all these leaf lice are the kerosene 

 emulsions and other mixtures which will be given later as summer 



Wingless partheno-genetic female. Wingless female. 



Forms of Aphids or Plant Lice. 



