18 
THE GEAPE ROOT-WORM. 
marks of the beetles are quite characteristic, consisting of round 
patches eaten into the parenchyma from the upper surface of the 
leaves. It is a very shy little creature, and on the slightest dis- 
turbance jumps off and hides beneath the foliage. Young vineyards 
when infested should be promptly sprayed with a mixture of from 
5 to 8 pounds of arsenate of lead to 100 gallons of water. This 
gives the plants a very good protection. The earlier stages of this 
insect are not known. 
The grapevine Colaspis (Colas pis brunnea Fab.) (fig. 7) in its gen- 
eral appearance resembles the grape root-worm beetle. It is, how- 
ever, slightly smaller, has no 
pubescence, and is of a pale yel- 
lowish color. It is nearly one- 
fifth of an inch long, with the 
body densely punctate. On the 
Fig. 6.— The redheaded Systena (Systena fron- Fig. 7.— The grapevine Colaspis {Colaspis brunnea): 
talis): Adult or beetle. Much enlarged. Adult or beetle. Much enlarged. (Original.) 
(Original.) 
wing covers the deep punctures are arranged in double longitudinal 
rows or striae. The beetle feeds upon the grape foliage in a manner 
more or less similar to that of the grape root-worm beetle. 
It is not within the scope of this paper to treat the various insect 
problems, such as those of the grape leaf hopper (TypMocyba comes 
Say), the grapeberry moth (Polychrosis viteana Clem.), the grape cur- 
culio (Craponius insequalis Say), and others, which from time to time 
confront the vineyardist. These pests demand special treatment, 
and in cases of serious infestation an entomologist should be con- 
sulted. It has t however, been our observation that well cultivated 
