288 



The Spraying of Plants. 



FIG. 54. Four-lined leaf-bug of currants, adult. 



part of May. While young they are bright red in color, but 

 later more black appears (Fig. 55). The adult insect may be 



found during June 

 and July. The in- 

 sects attack the 

 leaves at the tips of 

 the shoots, sucking 

 out the juices. This 

 causes the forma- 

 tion of small,brown, 

 angular areas of 

 dead tissue (Fig. 

 56), which at once 

 indicate the pres- 

 ence of this bug by 

 giving the leaves a 

 characteristic spot- 

 ted appearance. 



Treatment. The 

 insect is extremely active during the day, but in the early 

 morning it may be 

 jarred from the cur- 

 rant or gooseberry 

 bushes and caught 

 in pans containing 

 kerosene. Kero- 

 sene emulsion, con- 

 taining at least 9 

 per cent of the oil, 



will destroy the im- /jRP9g||A%\ 



mature insects, but ^ \& W^T^i# // Jfe. i 



it must be made 

 still stronger to kill 

 the adults. The 

 young insects 

 should be destroyed 



if possible. A third Fm 5g _ Four _i ine(i i ea f-bug, immature form. 



way to overcome 



the pest, and perhaps the best one, is to cut off the tips of the 



shoots which carry eggs and then destroy them. 



