434 



BOARD OF AGRICULTURE. [Pub. Doc. 



Treatment. 



Any treatment effective for the San Jo.se scale will also 

 destroy this insect, but its life history is such as to provide 

 an opportunity for easier methods as well. As all the young 

 hatch about the same time, — about the first of June, — two 

 sprayings at this season, about ten days apart, with kerosene 

 emulsion or Bowker's insect emulsion, should be sufficient to 

 keep this insect under entire control. Kerosene emulsion is 

 made as follows : \ pound hard soap, shaved fine, 1 gallon 

 soft water, 2 gallons kerosene. Dissolve the soap in the 

 water, which should be boiling ; remove from the fire and 

 pour it into the kerosene while hot. Churn this with a spray 

 pump till it changes to a creamy, then to a soft, butter-like 

 mass. Keep this as a stock, using one part in nine of water. 

 Bowker's insect emulsion comes ready prepared, needing 



only to be mixed with 

 ^\ater, and is therefore 

 convenient for those who 

 do not wish to prepare 

 the kerosene emulsion 

 for tliemselves. 



Thk Soukfy Scale. 



( C/ii'onaspis furfura 

 Fitch.) 



This is also a com- 

 mon scale in the United 

 Stiites, though it is ap- 

 parently less conmion in 

 Massachusetts tlum far- 

 ther south. 



The female is somewhat smaller than that of tht; oyster- 

 shell scale, but is broader, and of a dirty white color (Fig. 4, 

 a and c). The male scale (Fig. 4, b and d) is nmch smaller 

 and narrower. 



This insect, like the last, lays eggs beneath the scale in 

 the fall. These eggs, which are fioni 10 to 75 in munber, 

 are purplish in color, and hatch about the first of June into 



Fig. 4. — Scurfy soale: a, female, fc, male 

 scales, natural size, on twi}j;8; c, female scales, 

 much enlarged; d, male scale, mudi enlarj-etl. 

 (Howard, U. S. Dei)t. Agr., Yearbook, lSit4.) 



