INSECT PESTS AND DISEASES. 189 



orange. It is one of the commonest of the genus to which 

 ifc belongs. 



REMEDIES. When the leaves of the bushes are observed 

 to be flagging or withering, a shoot should be cut off, split 

 up, and examined, and should it be found to contain a 

 larva, or its gallery in the pith, all the rest exhibiting 

 similar symptoms should be cat off and burnt, to prevent 

 farther attack, when the insects attain the perfect state 

 to lay fresh batches of eggs. All prunings cut away dur- 

 ing the winter season should likewise be burnt, especially 

 if any of the bushes are known to have been affected 

 during the previous summer. 



CURRANT APHIS (Aphis ribis}. The young shoots are 

 often, and sometimes seriously, affected with aphis during 

 the early summer months, thereby injuring the health of 

 the bushes, and rendering them less fruitful. 



REMEDIES. The pest may be greatly lessened by timely 

 summer pruning when the bushes are attacked, removing 

 all the shoots that are not required for the extension of 

 the bush. Collect the prunings in close baskets as they 

 are cut off and burn them. For the rest, some of the 

 numerous washes recommended for plum, cherry, or 

 apple aphis may be used. 



CURRANT-BUD MITE (Phytopus ribis). A small oblong, 

 four-legged mite, of microscopical size, takes up its quar- 

 ters in the buds of the black currant, and so injures them 

 that, when badly infested, the young leaves never expand. 

 The body is fleshy, white, and tapers to extremity, where 

 it is furnished with a bristle on each side. The four legs 

 are on the front part of the body. 



REMEDIES. All buds that fail to open at the proper 

 season should be cut off, together with the shoots bearing 

 them, and burnt. If this is done early in the season the 



