INSECTS AND DISEASES 317 



Lice — See Aphis. 



Maple Borer — Dangerous insect enemy be- 

 cause its presence is difficult to detect before 

 serious injury bas been done. It is a beetle 

 with yellowish bead, body an inch long and 

 wings yellow and black. Appears in July and 

 August. The only sure remedy is to dig the 

 borers out. The trunk may also be painted 

 with lime wash containing Paris green at the 

 rate of 5 oz. to the gallon. 



Maple Cotton or Woolly Scale — Body of in- 

 sect and mass of eggs are covered with a white, 

 cotton-like substance. Attacks soft maples, 

 also occasionally elms, chestnuts and lindens. 

 Spray with lime-sulphur wash in water or 

 whale-oil soap. 



Mealy-hug — White, scale-like insect fre- 

 quently attacking plants under glass. Spray 

 with whale-oil soap or syringe with clear water 

 thrown in a hard stream. Dip small potted 

 plants in water heated to a temperature of 125° 

 Fahrenheit. 



Mite — Resembles red-spider but is lighter in 

 color. Feeds on under side of leaves, espe- 

 cially of greenhouse plants. Spray with kero- 

 sene emulsion, applying at frequent intervals 

 and, after an hour or two, wash off the spray. 



